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13 1:37 PM 1 g6

Electrical Steel

2010-11-
Made in Korea

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>>>

Contents
MANUFACTURING PROCESS AND FACILITIES 4
SPECIFICATION & MAIN APPLICATION 6
GRAIN-ORIENTED ELECTRICAL STEEL 8
NON-ORIENTED ELECTRICAL STEEL 14
SURFACE INSULATION 26
STRESS RELIEF ANNEALING 27
RELATIONS AMONG WEIGHT, OUTSIDE DIAMETER AND WIDTH OF COIL 29
MAJOR INTERNATIONAL STANDARDS 30
UNIT CONVERSION TABLES, THE INTERNATIONAL SYSTEM OF UNITS(SI) 32
PACKAGING/MARKING 33
GLOBAL NETWORK 34

1113 2010.11.13 2:27 PM 3 g6

We move the world in silence

1. Excellent materials
produces the worlds best electrical steel with its outstanding manufacturing technology.
Customers prefer products made of
electrical steel because they feature excellent performance
and high energy efficiency.
In particular, domain refined GO made by the latest laser technology are mainly used for an extra-high
voltage transformer which is the most energy efficient in the world.

2. Reliable Quality Control

produces products in the advanced plants and facilities and applied strict quality control
standard to them to provide high-quality materials to customers.

3. Diversified Product Lines

provides various grade of electrical steel to meet each customers needs.
develops a lot of customized materials which are outstanding performers at a high frequency
and show lower core loss after heat treatment to provide the most appropriate materials for use. The
diversified
electrical steel is now widely used for high-performance products, like driving
motors of environment-friendly cars.

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>> Manufacturing

Process and Facilities

Insulation Coating

Pickling

Cold Rolling

04

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Annealing

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Manufacturing process (Grain-oriented electrical steel)

Manufacturing process (Non grain-oriented electrical steel)

Electrical Steel

05

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>> Specification &

Main Application

Grain-Oriented

Non-Oriented
PN-Core

PHDCore

PHCore

Large rotating
machine

Rotating Machines

Medium rotating
machine

Hermetically
sealed motor

Small motor & Intermittent

Service AC motor

Static Machines

Large power
transformer

Medium & small

power transformer

Distribution
transformer

Reactor & magnetic

amplifier

Audio
transformer

Current & potential

transformer

Welding
transformer
Magnetic
switch core

www.posco.com

PNM-Core PNA-Core PNS-Core PNF-Core

PN210 PN440 PN800 PNM500 PNA300

PNS250 PNF1500
-540
-450
-400
-700 -1300

General use
AC motor

Ballast

06

PGCore

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The usage presented in this section reflects the general use and shall be used as a reference.
Please be sure to consult with our associates when making orders for specific usage.

Electrical Steel

07

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>> Grain-Oriented

Electrical Steel
PG-Core
The grain's easy magnetization direction is aligned to the rolling direction. Therefore, this product
features excellent magnetic properties in the rolling direction. It is widely used for large-sized power
transformers or mid/small size transformers.

Standard Size
Product

PG-Core

Grade
27PG110
27PG120
27PG130
30PG110
30PG120
30PG130
30PG140
35PG145
35PG155

Width mm (in.)

Thickness
mm (in.)

Available

Standard

Inside diameter
mm (in.)

0.27
(0.0106)

0.30
(0.0118)

850-1000
(33.46-47.24)

1000
(39.37)
1200
(47.24)

508
(20)

0.35
(0.0138)

Note: For non-standard sizes, please contact us

Specification
Magnetic properties and lamination factor
Grade
27PG110
27PG120
27PG130
30PG110
30PG120
30PG130
30PG140
35PG145
35PG155

Thickness
mm (in.)

Density
(kg/dm3)

0.27
(0.0106)

0.30
(0.0118)
0.35
(0.0138)

7.65

Core Loss, Max (W17/50)

Watt per kilogram Watt per pound
1.10
1.20
1.30
1.10
1.20
1.30
1.40
1.45
1.55

0.50
0.54
0.59
0.50
0.54
0.59
0.64
0.66
0.70

Magnetic Flux
Density.Min
T (B8)

95.0

1.80

Note: The above test is conducted in accordance to IEC60404-2 (or JIS C 2550-2000).
W17/50 indicates the core loss at the frequency of 50 Hz, magnetic flux density of 1.7T.
Core loss and induction are measured after stress relief annealing in a longitudinal direction.
(annealing condition : 840, 1Hr, Under neutral atmosphere)

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Lamination Factor,
Min(%)

95.5

96.0

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Dimension & Shape Tolerance

Width
mm (in.)
850 and over
(33.46)

Thickness
mm (in.)

Thickness Tolerance
mm (in.)

Thickness deviation in
Width Tolerance
transverse direction
mm (in.)
mm (in.)

Camber
(Length : 2m)
mm (in.)

0.27(0.0106)
0.30(0.0118)
0.35(0.0138)

0.03
(0.0012)

+0.6(0.0236)
0

0.03(0.0012)
and under

1.0(0.0394)
and under

Note : The thickness deviation in width direction means the gap between the thickness of center and the one
of part 15mm away from the edge part.

Typical Electrical and Magnetic Property

Grade

Thickness
mm (in.)

Density
(kg/dm3)

27PG110
27PG120
27PG130

Core Loss
Magnetic
Resistivity
Flux
Density.
Watt
per
pound
Watt
per
kilogram
m
T
-8
(10 ) W15/50 W17/50 W15/60 W17/60 W15/50 W17/50 W15/60 W17/60
(B8)
1.85
0.76 1.05 1.01 1.37 0.35 0.48 0.46 0.62

0.27
(0.0106)

30PG110
30PG120
30PG130

0.30
(0.0118)

7.65

48

30PG140
35PG145
35PG155

0.35
(0.0138)

0.78 1.15 1.02 1.48 0.35 0.52 0.46 0.67

1.85

0.82 1.22 1.07 1.55 0.37 0.55 0.49 0.70

1.84

0.80 1.08 1.05 1.48 0.36 0.49 0.48 0.67

1.85

0.83 1.17 1.09 1.53 0.38 0.53 0.49 0.69

1.85

0.87 1.25 1.12 1.61 0.40 0.57 0.51 0.73

1.84

0.90 1.32 1.17 1.70 0.41 0.60 0.53 0.77

1.84

0.98 1.37 1.29 1.80 0.44 0.62 0.59 0.82

1.84

1.01 1.45 1.33 1.89 0.46 0.66 0.61 0.86

1.83

Note : Above values are not guaranteed.

Tests are conducted in accordance with IEC60404-2 (or JIS C 2550-2000) method, using specimens
taken longitudinal to the rolling and then annealed to develop full magnetic properties.

Typical Mechanical Property and Lamination Factor

0.27(0.0106)

Tensile Strength
(N/mm2)
L
C
344
385

Yield Point
(N/mm2)
L
C
322
340

L
11

C
44

0.30(0.0118)

345

412

330

350

12

0.35(0.0138)

364

423

345

357

10

Thickness
mm (in.)

Elongation
(%)

182

Lamination
Factor
(%)
98.0

49

174

99.0

40

181

99.5

Hardness
Hv1

Note : 1. Tests are conducted in accordance with IEC404-2(or JIS C 2550-2000)

2. L : Specimens taken longitudinal to the rolling direction
C : Specimens taken transverse to the rolling direction
3. Specimens with 0A coating are used for lamination factor test.
Electrical Steel

09

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PH-Core
The directional property of grain-oriented electrical steel is more reinforced in the rolling direction than
PG-Core and therefore features low core loss and high induction. It is used for iron core of both large and
other size power transformers and desirable for high efficiency and miniaturization of machinery.

Standard Size
Product

Grade

Width mm (in.)

Thickness
mm (in.)

Available

Standard

Inside Diameter
mm (in.)

23PH085
23PH090
23PH095

0.23
(0.0091)
1000
(39.37)

23PH100
PH-Core

27PH095
27PH100

0.27
(0.0106)

850-1200
(33.46-47.24)

27PH1 10
30PH100

508
(20)

1200
(47.24)

0.30
(0.0118)

30PH105

Note: For non-standard sizes, please contact us.

Specification
Magnetic properties and lamination factor
Grade

Thickness
mm (in.)

Density
(kg/d)

23PH085

Core Loss, Max (W17/50)

Watt per kilogram Watt per pound
0.85

0.39

23PH090

0.23

0.90

0.41

23PH095

(0.0091)

0.95

0.43

1.00

0.45

0.95

0.43

1.00

0.45

1.10

0.50

23PH100
27PH095
27PH100
27PH110

0.27
(0.0106)

7.65

30PH100

0.30

1.00

0.45

30PH105

(0.0118)

1.05

0.48

Magnetic Flux
Density.Min
T (B8)

Lamination
Factor, Min(%)

94.5

1.88

Note: The above test is conducted in accordance to IEC60404-2 (or JIS C 2550-2000).
W17/50 indicates the core loss at the frequency of 50 Hz, magnetic flux density of 1.7T.
Core loss and induction are measured after stress relief annealing in a longitudinal direction.
(annealing condition : 840, 1Hr, Under neutral atmosphere)

10

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95.0

95.5

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Dimension & Shape Tolerance

Width
mm (in.)

Thickness
Tolerance
mm (in.)

Thickness
mm (in.)

Thickness deviation in
transverse direction
mm (in.)

Width
Tolerance
mm (in.)

Camber
(Length : 2 m)
mm (in.)

0.03(0.0012)

+0.6(0.0236)

1.0(0.0394)

and under

and under

0.23(0.0091)
850 and over
(33.46)

0.27(0.0106)

0.03(0.0012)

0.30(0.0118)

Note : The thickness deviation in width direction means the gap between the thickness of center and the one of part
15mm away from the edge part.

Typical Electrical and Magnetic Property

Grade

Resistivity
Thickness Density m
mm (in.) (kg/dm3) (10-8)

23PH085

Core Loss(W/kg)

Magnetic
Flux
Watt per kilogram
Watt per pound
Density.
W15/50 W17/50 W15/60 W17/60 W15/50 W17/50 W15/60 W17/60 T (B8)
0.62

0.83

0.81

1.10

0.28

0.38

0.37

0.50

1.91

23PH090

0.23

0.64

0.88

0.85

1.15

0.29

0.40

0.39

0.52

1.91

23PH095

(0.0091)

0.65

0.90

0.86

1.17

0.30

0.41

0.39

0.53

1.91

0.70

0.95

0.92

1.26

0.32

0.43

0.42

0.57

1.90

0.70

0.93

0.92

1.23

0.32

0.42

0.42

0.55

1.91

23PH100
27PH095
27PH100
27PH110

0.27

7.65

48

(0.0106)

0.72

0.97

0.95

1.27

0.33

0.44

0.43

0.58

1.90

0.78

1.03

1.01

1.37

0.35

0.47

0.46

0.62

1.90

30PH100

0.30

0.74

0.99

0.98

1.29

0.34

0.45

0.44

0.59

1.91

30PH105

(0.0118)

0.76

1.01

1.00

1.33

0.35

0.46

0.45

0.60

1.90

Note : Above values are not guaranteed.

Tests are conducted in accordance with IEC60404-2 (or JIS C 2550-2000) method, using specimens taken
longitudinal to the rolling and then annealed to develop full magnetic properties.

Typical Mechanical Property and Lamination Factor

Thickness
mm (in.)

Tensile Strength
(N/mm2)
L
C

Yield Point
(N/mm2)
L
C

Elongation
(%)

Hardness
Hv1

Lamination
Factor
(%)

0.23(0.0091)

381

424

356

383

18

42

178

98

0.27(0.0106)

361

415

337

367

18

42

182

98

0.30(0.0118)

345

412

330

358

20

45

184

99

Note : 1. Tests are conducted in accordance with IEC404-2(or JIS C 2550-2000)

2. L : Specimens taken longitudinal to the rolling direction
C : Specimens taken transverse to the rolling direction
3. Specimens with 0A coating are used for lamination factor test.
Electrical Steel

11

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PHD-Core
Magnetic domain refined steel is a grade that has been specially laser treated to lower the core loss
some 30% from that of CGO steel. Energy efficiency is raised and magnetostriction is lowered, resulting
in low noise. . It is used for iron core of both large and other size power transformers that have not been
heat treated.

Standard Size
Product

23PHD080
23PHD085
PHD-Core

27PHD090
27PHD095
30PHD095

Width mm (in.)
Available
Standard

Thickness
mm (in.)

Grade

Inside diameter
mm (in.)

0.23(0.0091)
0.27(0.0106)

850-1000

1000

508

(33.46-39.37)

(39.37)

(20)

0.030(0.0118)

Note: For non-standard sizes, please contact us

Specification
Magnetic properties and lamination factor.
Grade
23PHD080
23PHD085
27PHD090
27PHD095
30PHD095

Thickness
mm (in.)

Density
(kg/dm3)

0.23(0.0091)
0.27(0.0106)

Magnetic Flux
Density.Min
Watt per kilogram Watt per pound
T (B8)
0.36
0.80
1.88
0.39
0.85

7.65

0.030(0.0118)

Core Loss, Max(W17/50)

0.90

0.41

0.95

0.43

0.95

0.43

1.88

Lamination
Factor, Min(%)
94.5
95.0
95.5

Note: The above test is conducted in accordance to IEC60404-3 (or JIS C 2556), using as-sheared specimens in
longitudinal to rolling direction, without stress relief annealing.
W17/50 indicates the core loss at the frequency of 50 Hz, magnetic flux density of 1.7T.

Dimension & Shape Tolerance

Width
mm (in.)

Thickness
mm (in.)

Thickness
Tolerance
mm (in.)

Thickness deviation in
transverse direction
mm (in.)

Width
Tolerance
mm (in.)

Camber
(Length : 2 m)
mm (in.)

0.03

0.03(0.0012)
and under

+0.6(0.0236)

1.0(0.0394)
and under

0.23(0.0091)
850 and over
(33.46)

0.27(0.0106)
0.30(0.0118)

(0.0012)

Note : The thickness deviation in width direction means the gap between the thickness of center and the one of part
15mm away from the edge part.

12

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Typical Electrical and Magnetic Property

Grade

23PHD080
23PHD085
27PHD090
27PHD095
30PHD095

Resistivity
Thickness Density m
mm (in.) (kg/dm3) (10-8)
0.23
(0.0091)
0.27 7.65
(0.0106)

48

0.30
(0.0118)

Core Loss

Magnetic
Flux
Density.
Watt per kilogram
Watt per pound
T
W15/50 W17/50 W15/60 W17/60 W15/50 W17/50 W15/60 W17/60 (B8)
0.57

0.77

0.75

1.01

0.26

0.35

0.34

0.46

1.91

0.59

0.80

0.78

1.05

0.27

0.36

0.35

0.48

1.91

0.64

0.87

0.85

1.14

0.29

0.40

0.39

0.52

1.91

0.66

0.91

086

1.18

0.30

0.41

0.39

0.54

1.91

0.68

0.93

0.91

1.23

0.31

0.42

0.41

0.56

1.91

Note : Above values are not guaranteed.

Tests are conducted in accordance with IEC60404-3 (or JIS C 2556-1996) method, using specimens in
longitudinal to rolling direction.

Typical Mechanical Property and Lamination Factor

Thickness
mm (in.)

Tensile Strength
(N/mm2)
L
C

Yield Point
(N/mm2)
L
C

Elongation
(%)
L

Hardness
Hv1

Lamination
Factor
(%)

0.23(0.0091)

381

424

356

383

14

49

176

99.0

0.27(0.0106)

361

415

337

367

11

44

185

98.5

0.30(0.0118)

345

412

330

358

12

49

183

99.0

Note : 1. Tests are conducted in accordance with IEC404-2(or JIS C 2550-2000)

2. L : Specimens taken longitudinal to the rolling direction
C : Specimens taken transverse to the rolling direction
3. Specimens with 0A coating are used for lamination factor test.

Electrical Steel

13

1113 2010.11.13 2:27 PM 14 g6

>> Non-oriented

Electrical Steel
PN-Core
The non-oriented electrical steel features even magnetic properties in the rolling direction and in other directions.
They are widely used for iron core materials of rotating machines ranging from large-size power generators to
small-size precision electric motors. They are also desirable for iron core of small-size power transformers.

Standard Size
Product

Width mm (in.) Inside Diameter

Thickness
mm (in.) Available Standard mm (in.)

Grade

0.35
(0.0138)
0.50 950~1200
50PN250, 50PN270, 50PN290, 50PN310, 50PN350
(0.0197) (37.40-47.24) 1000
(39.37)
0.65
65PN290, 65PN310, 65PN350
(0.0256)
1100
(43.31)
0.35
35PN360, 35PN440
(0.0138)
1200
(47.24)
50PN400, 50PN470, 50PN600, 50PN700, 50PN800, 0.50 950~1250
(0.0197) (37.40-49.21)
50PN1000, 50PN1300
35PN210, 35PN230, 35PN250, 35PN270, 35PN300

PN-Core
(Coil)

508
(20)

0.65
65PN600, 65PN700, 65PN800, 65PN1000, 65PN1300 (0.0256)
Note: For non-standard sizes, please contact us

Specification
Magnetic properties and lamination factor.

Grade

Density
(kg/dm3)

Core Loss. Max (W15/50)

Watt per kilogram Watt per pound

Magnetic Flux
Density.Min
T
(B50)

35PN210

7.60

2.10

0.95

1.62

35PN230

7.60

2.30

1.04

1.62

7.60

2.50

1.14

1.62

7.65

2.70

1.23

1.62

7.65

3.00

1.36

1.62

35PN360

7.65

3.60

1.63

1.63

35PN440

7.70

4.40

2.00

1.65

35PN250
35PN270
35PN300

14

Thickness
mm (in.)

www.posco.com

0.35
(0.0138)

Lamination
Factor,
Min
(%)

95.0

1113 2010.11.13 2:27 PM 15 g6

Grade

Thickness
mm (in.)

Density
(kg/dm3)

Core Loss. Max (W15/50)

Watt per kilogram Watt per pound

Magnetic Flux
Density.Min
T
(B50)

50PN250

7.60

2.50

1.14

1.62

50PN270

7.60

2.70

1.23

1.62

50PN290

7.60

2.90

1.32

1.62

50PN310

7.65

3.10

1.41

1.62

50PN350

0.50

7.65

3.50

1.59

1.62

50PN400

(0.0197)

7.65

4.00

1.82

1.63

50PN470

7.70

4.70

2.13

1.64

50PN600

7.75

6.00

2.72

1.66

50PN700

7.80

7.00

3.18

1.70

50PN800

7.85

8.00

3.63

1.70

50PN1000

7.85

10.00

4.54

1.70

50PN1300

7.85

13.00

5.90

1.70

65PN290

7.60

2.90

1.32

1.62

65PN310

7.65

3.10

1.41

1.62

65PN350

7.65

3.50

1.59

1.62

65PN400

7.65

4.00

1.82

1.63

65PN470

0.65

7.70

4.70

2.13

1.64

65PN600

(0.0256)

7.75

6.00

2.72

1.66

65PN700

7.80

7.00

3.18

1.70

65PN800

7.85

8.00

3.63

1.70

65PN1000

7.85

10.00

4.54

1.70

65PN1300

7.85

13.00

5.90

1.70

Lamination
Factor,
Min
(%)

96.0

97.0

Note: The above test is conducted in accordance to IEC60404-2 (or JIS C 2550-2000).
W15/50 indicates the core loss at the frequency of 50 Hz, magnetic flux density of 1.5T.

Dimension & Shape Tolerance

Width
mm (in.)
1000(39.37)
and under

1000(39.37)
and over

0.35(0.0138)

Thickness deviation in
Thickness
transverse direction
Tolerance
mm (in.)
mm (in.)
0.035(0.00138) 0.02(0.0008) and under

0.50(0.0197)

0.040(0.00158) 0.03(0.0012) and under

0.65(0.0256)

0.052(0.00205) 0.04(0.0016) and under

0.35(0.0138)

0.035(0.00138)

Thickness
mm (in.)

Width
Tolerance
mm (in.)
+1.5(0.0591)
0

0.04(0.0016) and under

0.040(0.00158)

0.65(0.0256)

0.052(0.00205) 0.04(0.0016) and under

1.0(0.0394)
and under

0.03(0.0012) and under

0.50(0.0197)

Camber
(Length : 2 m)
mm (in.)

+1.5(0.0591)
0

Note : The thickness deviation in width direction means the gap between the thickness of center and the one of part
15mm away from the edge part.

Electrical Steel

15

1113 2010.11.13 2:27 PM 16 g6

Typical Electrical and Magnetic Property

Magnetic Flux
Density. (T)

Core Loss
Thickn
Resistivity
ess Density
m
3
mm (kg/dm )
(10-8)
(in.)

Grade

Watt per kilogram

Watt per pound

B25

B50

W10/50 W15/50 W10/60 W15/60 W10/50 W15/50 W10/60 W15/60

35PN210

7.60

59

0.84

2.04

1.03

2.53

0.38

0.93

0.47

0.17

1.56

1.65

35PN230

7.60

59

0.89

2.10

1.07

2.60

0.40

0.95

0.49

0.18

1.57

1.66

7.60

55

0.96

2.25

1.17

2.85

0.43

1.02

0.53

0.20

1.57

1.66

35PN270

(0.0138) 7.65

52

1.02

2.40

1.28

3.00

0.46

1.09

0.58

0.21

1.58

1.67

35PN300

7.65

45

1.08

2.53

1.38

3.18

0.49

1.15

0.63

0.22

1.59

1.69

35PN360

7.65

45

1.25

2.80

1.55

3.45

0.57

1.27

0.70

0.26

1.59

1.69

35PN440

7.70

42

1.39

3.08

1.73

3.82

0.63

1.40

0.79

0.29

1.62

1.71

50PN250

7.60

59

1.00

2.37

1.31

3.08

0.45

1.08

0.59

1.40

1.57

1.67

50PN270

7.60

59

1.05

2.50

1.35

3.22

0.48

1.14

0.61

1.46

1.57

1.67

50PN290

7.60

56

1.09

2.60

1.45

3.35

0.50

1.18

0.65

1.52

1.58

1.67

50PN310

7.65

53

1.21

2.70

1.55

3.46

0.55

1.23

0.70

1.57

1.59

1.68

7.65

50

1.30

2.93

1.63

3.74

0.59

1.33

0.74

1.70

1.60

1.69

45

1.41

3.18

1.82

4.01

0.64

1.44

0.83

1.82

1.61

1.70

50PN470

(0.0197) 7.65
7.70

42

1.64

3.55

2.06

4.56

0.74

1.61

0.94

2.07

1.61

1.70

50PN600

7.75

34

1.98

4.40

2.49

5.63

0.90

2.00

1.13

2.56

1.62

1.71

50PN700

7.80

30

2.62

5.55

3.30

7.03

1.19

2.52

1.50

3.19

1.64

1.72

50PN800

7.85

17

2.93

6.26

3.63

7.94

1.33

2.84

1.65

3.60

1.66

1.74

50PN1000

7.85

17

3.20

6.80

4.10

8.62

1.45

3.09

1.86

3.91

1.67

1.75

50PN1300

7.85

17

3.75

7.56

4.75

9.54

1.70

3.43

2.16

4.33

1.67

1.75

65PN400

7.65

45

1.63

3.70

2.23

4.85

0.74

1.68

1.01

2.20

1.62

1.70

65PN470

7.70

42

1.91

4.16

2.59

5.45

0.87

1.89

1.18

2.47

1.62

1.70

7.75

34

2.27

5.14

3.09

6.68

1.03

2.33

1.40

3.03

1.63

1.72

7.80

30

3.02

6.47

4.06

8.33

1.37

2.94

1.84

3.78

1.65

1.73

7.85

17

3.38

7.28

4.56

9.39

1.53

3.30

2.07

4.26

1.67

1.75

65PN1000

7.85

17

3.64

7.86

5.00

10.14

1.65

3.57

2.27

4.60

1.68

1.75

65PN1300

7.85

17

4.32

8.79

5.83

11.29

1.96

4.00

2.65

5.13

1.68

1.75

0.35

35PN250

50PN350
50PN400

0.50

65PN600
65PN700
65PN800

0.65
(0.0256)

Note : Above values are not guaranteed.

W15/50 indicates the core loss at the frequency of 50 Hz, magnetic flux density of 1.5T.
Tests are conducted in accordance with IEC60404-2 (or JIS C 2550-2000) method.

16

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1113 2010.11.13 2:27 PM 17 g6

Typical Mechanical Property and Lamination Factor

Grade

Thickness
mm (in.)

Tensile Stength
(N/mm2)
L
C

Yield Point
(N/mm2)
L
C

Elongation
(%)
L
C

Hardness
Hv1

35PN210

538

547

415

427

18

19

220

35PN230

535

545

393

403

19

20

216

35PN250

0.35

522

539

370

385

19

21

214

35PN270

(0.0138)

467

485

347

361

21

23

190

35PN300

456

469

336

351

21

23

188

35PN360

450

470

350

366

23

25

170

35PN440

405

415

273

285

27

29

150

50PN250

550

570

413

426

20

22

223

50PN270

535

550

406

460

22

23

205

50PN290

510

530

370

386

23

25

195

50PN310

483

505

355

361

25

28

189

470

489

344

354

25

28

189

465

482

352

365

27

30

183

415

420

265

375

34

36

143

50PN600

395

405

260

270

37

39

130

50PN700

385

395

270

280

38

39

120

50PN800

375

385

270

280

39

40

115

50PN1000

370

380

265

275

40

41

113

50PN1300

350

360

250

260

42

43

105

65PN400

499

490

320

340

24

26

170

65PN470

480

490

300

315

28

29

160

50PN350
50PN400
50PN470

0.50
(0.0197)

65PN600

0.65

420

430

295

305

30

31

150

65PN700

(0.0256)

395

405

275

285

35

37

118

65PN800

375

385

270

280

41

43

113

65PN1000

370

380

265

275

43

45

110

65PN1300

350

360

260

270

45

110

Lamination
Factor
(%)

97.5

98.0

98.0

Note : 1. L : Specimens taken longitudinal to the rolling direction

C : Specimens taken transverse to the rolling direction
3. Specimens with C-6A coating are used for lamination factor test.

Electrical Steel

17

1113 2010.11.13 2:27 PM 18 g6

PNM-Core
The non-oriented electrical steel features even magnetic properties in the rolling direction and in other
directions. It is utilized as steel material for magnetic switches and improved in wear resistance and
residual magnetism.

Standard Size
Product

PNM-Core
(Coil)

Grade

Thickness
mm (in.)

65PNM540

0.65
(0.0256)

Width mm (in.)

0.70
(0.0276)

70PNM500

Available

Standard

950~1200
(37.40-47.24)

1000
(39.37)
1050
(41.34)
1 100
(43.31)

Inside Diameter
mm (in.)

508
(20)

Note: For non-standard sizes, please contact us

Specification
Magnetic properties and lamination factors.

Grade

65PNM540
70PNM500

Thickness
mm (in.)

Density
(kg/dm3)

0.65
(0.0256)
0.70
(0.0276)

Core Loss. Max (W15/50)

Magnetic Flux Lamination

Density.Min
Factor,
T
Min
(B50)
(%)

Watt per kilogram

Watt per pound

7.70

5.40

2.45

1.66

97.0

7.65

5.00

2.63

1.65

97.0

Note : The above test is conducted in accordance to IEC404-2 (or JIS C 2550-2000), using as-sheared specimens
one half longitudinal and one half transverse to the rolling direction.

Dimension & Shape Tolerance

Width
mm (in.)

Thickness
mm (in.)

Thickness
Tolerance
mm (in.)

Thickness deviation in
transverse direction
mm (in.)

Width Tolerance
mm (in.)

1000(39.37)
and under

0.65(0.0256)

0.052(0.00205)

0.70(0.0276)

0.056(0.00221)

0.04(0.0016)
and under

+1.5(0.0591)
0

1000(39.37)
and under

0.65(0.0256)

0.052(0.00205)

0.70(0.0276)

0.056(0.00221)

0.04(0.0016)
and under

+1.5(0.0591)
0

Camber
(Length : 2m)
mm (in.)

1.0(0.0394)
and under

Note : The thickness deviation in width direction means the gap between the thickness of center and the one of part
15mm away from the edge part.

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1113 2010.11.13 2:27 PM 19 g6

Typical Electrical and Magnetic Property

Thickn
Resistivity
ess Density
m
mm (kg/dm3)
(10-8)
(in.)

Grade

Magnetic Flux
Density.Min
(T)

Core Loss
Watt per pound

Watt per kilogram

B25

B50

W10/50 W15/50 W10/60 W15/60 W10/50 W15/50 W10/60 W15/60

65PNM540

70PNM500

0.65
(0.0256)
0.70
(0.0276)

7.70

42

1.80

3.72

2.27

4.81

0.82

1.69

1.03

2.18

1.65

1.73

7.65

44

1.72

3.63

2.18

4.78

0.78

1.65

0.99

2.17

1.61

1.70

Note : Above values are not guaranteed.

Tests are conducted in accordance with IEC60404-2 (or JIS C 2550-2000) method.

Typical Mechanical Property and Lamination Factor

Grade

Thickness
mm (in.)

Tensile Stength
(N/mm2)
L
C

65PNM540

0.65
(0.0256)

437

70PNM500

0.70
(0.0276)

452

Yield Point
(N/mm2)
L
C
300

315

Elongation
(%)
L
C
32

33

Hardness
(Hv1)

Lamination
Factor
(%)

155
98.0

495

503

356

371

37

39

173

Note : 1. L : Specimens taken longitudinal to the rolling direction

C : Specimens taken transverse to the rolling direction
2. Specimens with C-6A coating are used for lamination factor test.

Electrical Steel

19

1113 2010.11.13 2:27 PM 20 g6

PNF-Core
PNF-Core features good magnetic properties in high frequency where eddy current loss extremely
increase.

Standard Size
Product

Grade

PNF-Core
(Coil)

20PNF1500

Width mm (in.)

Thickness
mm (in.)

Available

Standard

Inside Diameter
mm (in.)

0.20

950~1200

1000

508

(0.0080)

(37.40-47.24)

(39.37)

(20)

Note: For non-standard sizes, please contact us

Specification
Magnetic properties and lamination factor.
Core Loss , Max (W10/400)
Grade

20PNF1500

Thickness
mm (in.)
0.20
(0.0080)

Density
(kg/dm3)

Watt per kilogram Watt per pound

7.65

15.0

Magnetic Flux
Density.Min
T
(B50)

Lamination
Factor , Min(%)

1.62

93.0

6.80

Note: The above test is conducted in accordance to IEC60404-2 (or JIS C 2550-2000), using as-sheared specimens
one half longitudinal and one half transverse to the rolling direction.
W10/400 indicates the core loss at the frequency of 400 Hz, magnetic flux density of 1.0T.
B50 indicates magnetic flux density at 5000A/m

Dimension & Shape Tolerance.

Width
mm (in.)

Thickness
mm (in.)

Thickness
Tolerance
mm (in.)

1000(39.37)
and under

0.20
(0.0080)

0.020

Thickness deviation in
transverse direction
mm (in.)

Width Tolerance
mm (in.)

0.02(0.0008)

+1.5(0.0591)

and under

Camber
(Length : 2m)
mm (in.)

1.0(0.0394)
and under

1000(39.37)
and over

0.20
(0.0080)

0.020

0.03(0.0012)

+1.5(0.0591)

and under

Note : The thickness deviation in width direction means the gap between the thickness of center and the one of part
15mm away from the edge part.

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1113 2010.11.13 2:27 PM 21 g6

Typical Electrical and Magnetic Property

Grade

20PN
F1500

Resist
Thickn
Density ivity
ess
(kg/ m
mm
dm3)
(
(in.)
108)
0.20
(0.0080)

7.65

50

Core Loss
Watt per kilogram

Magnetic Flux
Density.Min
(T)

Watt per pound

W10/50 W15/50 W10/60 W15/60 W10/400 W10/50 W15/50 W10/60 W15/60 W10/400 B25

B50

1.24

1.66

2.71

1.53 3.28 12.8 0.56 1.23 0.69 1.49

5.76

1.55

Note : Above values are not guaranteed.

W10/400 indicates the core loss at the frequency of 400 Hz, magnetic flux density of 1.0T.
Tests are conducted in accordance with IEC60404-2 (or JIS C 2550-2000) method,

Typical Mechanical Property and Lamination Factor

Grade

Thickness
mm (in.)

Tensile Stength
(N/mm2)
L
C

20PNF1500

0.20
(0.0080)

471

Yield Point
(N/mm2)
L
C

490

363

Elongation
(%)
L
C

381

16

19

Hardness
(Hv1)

Lamination
Factor
(%)

195

97.0

Note : 1. L : Specimens taken longitudinal to the rolling direction

C : Specimens taken transverse to the rolling direction
2. Specimens with C-6A coating are used for lamination factor test.

Comparison of Core Loss with Frequency

(W/kg)
100

20PNF1500
35PN210

80

35PN440
Core Loss
(at 1.0Tesla)

60
40
20

50 100

200

400

600

800

1000

1200
(Hz)

PNF Steel has 30% better W10/400 compared to 35PN210

Motor of
Premium

Slim Spindle
motor of ODD

Electrical Steel

21

1113 2010.11.13 2:27 PM 22 g6

PNA-Core
PNA-Core features lower core loss, high induction after SRA and good punchability.

Standard Size
Product

Grade

Width mm (in.)

Thickness
mm (in.)

Available

Standard
1000

50PNA300
PNA-Core
(Coil)

Inside Diameter
mm (in.)

(39.37)

50PNA350

0.50

950~1200

1050

508

(0.0197)

(37.40-47.24)

(41.34)

(20)

1100

50PNA450

(43.31)

Note: For non-standard sizes, please contact us

Specification
Magnetic properties and lamination factor
Grade

Thickness
mm (in.)

50PNA300

50PNA350

0.50
(0.0197)

50PNA450

Density
(kg/dm3)

Core Loss, Max (W15/50)

Magnetic Flux
Density.Min
T(B50)
Watt per kilogram Watt per pound

Lamination
Factor , Min(%)

7.75

3.0

1.36

1.70

96.0

7.75

3.5

1.59

1.70

96.0

7.80

4.5

2.13

1.70

96.0

Note: The above test is conducted in accordance to IEC60404-2 (or JIS C 2550-2000), using as-sheared specimens
one half longitudinal and one half transverse to the rolling direction. Core loss and induction are measured after
stress relief annealing.
(Annealing condition : 750, 2Hr, under neutral atmosphere)
W15/50 indicates the core loss at the frequency of 50 Hz, magnetic flux density of 1.5T.

Dimension & Shape Tolerance.

Width
mm (in.)

Thickness
mm (in.)

Thickness
Tolerance
mm (in.)

Thickness deviation in
transverse direction
mm (in.)

Width
Tolerance
mm (in.)

1000(39.37)
and under

0.5(0.0197)

0.040
(0.00158)

0.03(0.0012)
and under

+1.5(0.0591)
0

0.5(0.0197)

0.040
(0.00158)

0.04(0.0016)
and under

+1.5(0.0591)
0

1000(39.37)
and under

Camber
(Length 2m)
mm (in.)

1.0(0.0394)
and under

Note : The thickness deviation in width direction means the gap between the thickness of center and the one of part
15mm away from the edge part.

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1113 2010.11.13 2:27 PM 23 g6

Typical Electrical and Magnetic Property

Grade

Core Loss

Thickn
ess Density
mm (kg/dm3)
(in.)

Watt per kilogram

Magnetic Flux
Density.Min
(T)

Watt per pound

W10/50 W15/50 W10/60 W15/60 W10/50 W15/50 W10/60 W15/60

50PNA300
50PNA350
50PNA450

0.50
(0.0197)
0.50
(0.0197)
0.50
(0.0197)

B25

B50

37

1.29

2.70

1.72

3.71

0.59

1.35

0.78

1.68

1.66

1.73

33

1.36

3.05

1.83

3.91

0.62

1.38

0.83

1.77

1.67

1.74

25

1.73

3.89

2.22

5.11

0.79

1.77

1.01

2.32

1.63

1.72

Note : Above values are not guaranteed.

W15/50 indicates the core loss at the frequency of 50 Hz, magnetic flux density of 1.5T.
Tests were conducted in accordance with IEC60404-2 (or JIS C 2550-2000) method, after stress reliefannealing.
(Annealing condition : 750 (1380) 2 Hr under neutral at mosphere.)

Typical Mechanical Property and Lamination Factor

Grade

50PNA300
50PNA350
50PNA450

Thickness
mm (in.)
0.50
(0.0197)
0.50
(0.0197)
0.50
(0.0197)

Yield Point
(N/mm2)
L
C

Tensile Stength
(N/mm2)
L
C

Elongation
(%)
L
C

Hardness
(Hv1)

402

415

260

269

37

39

141

382

401

268

278

36

38

124

380

381

269

270

39

39

117

Lamination
Factor
(%)

98.0

Note : 1. L : Specimens taken longitudinal to the rolling direction

C : Specimens taken transverse to the rolling direction
2. Specimens with C-6A coating are used for lamination factor test.

Magnetic Property and Puncturbility Comparison (PNA-Core VS PN-Core)

50PNA300
1.8

B50(T) 1.7

50PNA350

50PN400

50PN470

200

High Induction

Punchability

180

Hardness 160
(Hv1) 140

Better

120
2.5

3.0

3.5

W15/50(W/kg)

Through higher induction and punchability, PNA-core features higher efficiency of products and longer
life of dies.

[High Efficient Refridgerator

Compressor Motor]

[High Efficient Aircon

Compressor Motor]
Electrical Steel

23

1113 2010.11.13 2:27 PM 24 g6

PNS-Core
PNS-Core features lower core loss, high induction and good punchability with lower hardness

Standard Size
Product

PNS-Core
(Coil)

Grade

Width mm (in.)

Thickness
mm (in.)

0.35
(0.0138)

35PNS250

Available

Standard

950~1200
(37.40-47.24)

1000
(39.37)
1050
(41.34)
1100
(43.31)

Inside Diameter
mm (in.)

508
(20)

Note: For non-standard sizes, please contact us

Specification
Magnetic properties and lamination factor.
Grade

35PNS250

Thickness
mm (in.)
0.35
(0.0138)

Density
(kg/dm3)

Core Loss , Max (W15/50)

Magnetic Flux
Watt per kilogram Watt per pound Density.Min T(B50)

7.60

2.5

1.14

1.63

Lamination
Factor , Min(%)

95.0

Note: The above test is conducted in accordance to IEC60404-2 (or JIS C 2550-2000), using as-sheared specimens
one half longitudinal and one half transverse to the rolling direction.
W15/50 indicates the core loss at the frequency of 50 Hz, magnetic flux density of 1.5T.

Dimension & Shape Tolerance.

Width
mm (in.)

Thickness
mm (in.)

Thickness
Tolerance
mm (in.)

Thickness deviation in
transverse direction
mm (in.)

Width
Tolerance
mm (in.)

1000(39.37)
and under

0.35
(0.0138)

0.035(0.00138)

0.02(0.0008)
and under

+1.5(0.0591)
0

1000(39.37)
and over

0.35
(0.0138)

0.035(0.00138)

0.03(0.0012)
and under

+1.5(0.0591)
0

Camber
(Length : 2m)
mm (in.)
1.0(0.0394)
and under

Note : The thickness deviation in width direction means the gap between the thickness of center and the one of part
15mm away from the edge part.

24

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1113 2010.11.13 2:27 PM 25 g6

Typical Mechanical Property and Lamination Factor

Grade

Core Loss

Thickn
ess Density
mm (kg/dm3)
(in.)

Watt per kilogram

Magnetic Flux
Density.Min
(T)

Watt per pound

W10/50 W15/50 W10/60 W15/60 W10/50 W15/50 W10/60 W15/60

35PNS250

0.35
(0.0138)

56

0.98

2.25

1.22

2.83

0.45

1.02

0.55

1.29

B25

B50

1.57

1.66

Note : Above values are not guaranteed.

W15/50 indicates the core loss at the frequency of 50 Hz, magnetic flux density of 1.5T.
Tests are conducted in accordance with IEC60404-2 (or JIS C 2550-2000) method.

Typical Mechanical Property and Lamination Factor

Grade

Thickness
mm (in.)

Tensile Stength
(N/mm2)
L
C

35PNS250

0.35
(0.0138)

442

445

Yield Point
(N/mm2)
L
C
330

332

Elongation
(%)
L
C
23

25

Hardness
(Hv1)

Lamination
Factor
(%)

186

98.0

Note : 1. L : Specimens taken longitudinal to the rolling direction

C : Specimens taken transverse to the rolling direction
2. Specimens with C-6A coating are used for lamination factor test.

Electrical Steel

25

1113 2010.11.13 2:27 PM 26 g6

>> Surface Insulation

Types and Features of Surface Insulation

GO

NO

General

Ecofriendly

0A

GS

General
C-6A

C-9A

GO

Applied Spec

Eco-friendly
NS

NM

Notice
NT

NO

Composition

Inorganic Inorganic Inorganic Inorganic Inorganic Inorganic Inorganic

+organic +organic +organic +organic +organic

Thickness (um)

1.5~2.0 1.5~2.0 0.5~1.0 1.2~1.8 0.5~1.0 1.2~1.8 5.0~7.0

Resistivity Brfore SRA

(cm2/sheet) After SRA

15

15

0.5

5.0

0.5

15

15

0.1

0.5

0.1

Lamination Factor (%)

95.0

95.0

98.0

98.0

98.0

Heat resistance
flaking after SRA

Weathering (powdering)
Brfore SRA
(Mandrel bend
tester)
Adhesion
(mm)
After
SRA(Cross cut
tester)
Change of
Resistance
surface
to
Change of
refrigerants
weight
Weldability

5.0

100

98.0

97.0

ASTM A 717
SRA
condition
:
750C2hrs. in DX rich gas
0.5 SRA Not Accepted
1.0MPa 0.05 in Pressure (JIS C 2550)

Not
Not
Not
Not
Not
Not
SRA Not
recogniozed recogniozed recogniozed recogniozed recogniozed recogniozed Accepted

15524hr in Air

Not
Not
Not
Not
Not
Not
SRA Not
recogniozed recogniozed recogniozed recogniozed recogniozed recogniozed Accepted

750
C2hrs.
in DX rich gas

Not
Not
Not
Not
Not
Not
Not
recogniozed recogniozed recogniozed recogniozed recogniozed recogniozed recogniozed

65 , 95% humidity,
72 Hr

30

30

10

5B

10

5B

10

ISO 1519

5B

ASTM D3359B
[0B (poor) ~ 5B
(excellent)] SRA:

Not
Not
Not
Not
recogniozed recogniozed recogniozed recogniozed

Not
Not
Not
Not
recogniozed recogniozed recogniozed recogniozed

excellent

excellent

5B

20

good

5B

10

good

R-134a/Freol @15C =
65g/100g
(130, 21day,0.45
filter paper)

Curreent : 100150A
Not Ar 99% flow1020L/minSpeed
allowed
0.250.50mpm

Note: 1) Please designate surface insulation according to usage. Regarding coating properties, please contact us.
2) The coating thickness value and the resistivity is typical value, not guaranteed.

26

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1113 2010.11.13 2:27 PM 27 g6

>> Stress Relief

Annelaing

Stress relief annealing is a process that is carried out to acquire desired magnetic properties of electrical
steel sheets by relieving stress generated in the process of shearing and punching at a proper
temperature for a certain period of time.

Annealing Temperature
If the annealing temperature is too low, it is difficult to acquire adequate magnetic properties and if the
temperature is too high, it may erode surface insulation and degrade insulation properties. The
optimum annealing temperature for grain-oriented electrical steel is 780
C to 840
C and 750
C to 800
C for non-oriented electrical steel for improved magnetism.

Annealing Time
Annealing time means the in-furnace time of materials at the highest temperature during the annealing
process. During this time, the materials in the furnace should be evenly heated. The annealing time
varies depending upon amount of materials or type of furnace. Generally, the annealing time is
between 1.5 to 2.5 hours.

Heating and Cooling Speed

Abrupt heating and cooling must be avoided to prevent any deformation of the iron core. Slow cooling
must be applied until it reaches 300~350
C before air cooling is applied.

Furnace Atmosphere
Furnace atmosphere should be controlled to minimize carburization or oxidization which can diminish
magnetic properties. Therefore a pure nitrogen atmosphere is ideal and the dew point of gas should
be maintained as low as possible, below 0
C is adequate. The oil used in shearing and punching
should be removed completely. Otherwise both sides of piled-up core will be damaged during the
annealing process, deteriorating the work capacity.

Electrical Steel

27

1113 2010.11.13 2:27 PM 28 g6

Reference for rust

45 Temp()
20
0

50

100

150

200

250

300

350

10

15

Condensed Water Zone

400

450

Humidity(%)

25

30

35

40

Dew
Point

90%

80%

70%

60%

50%

40%

30%

20%

10%

Condensed Water on steel surface Graph according to Humidity and Temperature

Water is condensed on the steel surface in certain temperature and humidity in store place and steel is likely to get
rusty.
Ex) In a place of 25, humidity 80%, water is condensed when temp decrease to 22.

28

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1113 2010.11.13 2:27 PM 29 g6

>> Relation Among Weight, Outside

Diameter And Width of Coil

Note : Inner diameter is 20inch (508mm)

Electrical Steel

29

1113 2010.11.13 2:27 PM 30 g6

>>

Major International
Standards

The product standards are subject to change. Please be sure to confirm the recent standards when
making orders or to consult our associates.

Grain-Oriented Electrical Steel

POSCO

JIS C 2553

ASTM

EN10107

(2006)
W/kg
17/50

(2000)
W/kg
17/50

(1999)
W/kg
17/60

(1995)
W/kg
17/50

23PHD085 0.85

23R085 0.85

23Q054 1.19

0.23

23PH090 0.90

23P090 0.90

(0.0091)

23PH095 0.95

23P095 0.95

23PH100 1.00

23P100 1.00

27PHD090 0.90

27R090 0.90

Thickness
mm
(inch)

23P060 1.32

M100-23P 1.00

27PH095 0.95
0.27

27PH100 1.00

27P100 1.00

(0.0106)

27PH110 1.10

27P110 1.10

27PG120 1.20

27G120 1.20

27PG130 1.30

27G130 1.30

M103-27P 1.03
27P066 1.46

27H074 1.63

30PH100 1.00
30PH105 1.05

M105-30P 1.05
30P105 1.05

0.30

30P110 1.10

M111-30P 1.11

(0.0118)

30P120 1.20

M117-30P 1.17

30PG130 1.30

30G130 1.30

30PG140 1.40

30G140 1.40

0.35

35PG145 1.45

35G145 1.45

(0.0138)

35PG155 1.55

35G155 1.55

30H083 1.83

M140-30S 1.40

35H094 2.07

M150-35S 1.50

Note : The core loss of POSCO products is the maximum guarantee value at 1.7T and 50Hz

30

M130-27S 1.30

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1113 2010.11.13 2:27 PM 31 g6

Non-Oriented Electrical Steel

Thickness
mm
(inch)

0.35

POSCO

JIS C 2552

ASTM

EN10106

(2006)
W/kg
15/50

(2000)
W/kg
15/50

(1999)
W/kg
15/60

(1995)
W/kg
15/50

35PN210 2.10

35A210 2.10

35PN230 2.30

35A230 2.30
36F145 3.20

M235-35A 2.35

35PN250 2.50

35A250 2.50
36F155 3.42

M250-35A 2.50

35PN270 2.70

35A270 2.70
36F175 3.86

M270-35A 2.70

35PN300 3.00

35A300 3.00
36F205 4.52

M300-35A 3.00

35PN360 3.60

35A360 3.60

35PN440 4.40

35A440 4.40

(0.0138)

50A230 2.30
50PN250 2.50

50A250 2.50

50PN270 2.70

50A270 2.70

M250-50A 2.50
M270-50A 2.70
47F165 3.64

50PN290 2.90

50A290 2.90

M290-50A 2.90
47F180 3.97

50PN310 3.10

50A310 3.10

M310-50A 3.10
47F200 4.41

50PN350 3.50

50A350 3.50

M350-50A 3.50
47F210 4.63

0.50
50PN400 4.00

50A400 4.00

M400-50A 4.00
47F240 5.29

(0.0197)
50PN470 4.70

50A470 4.70

50PN600 6.00

50A600 6.00

M470-50A 4.70
M600-50A 6.00
47F400 8.82

50PN700 7.00

50A700 7.00

M700-50A 7.00
47F450 9.92

50PN800 8.00

50A800 8.00

M800-50A 8.30

50PN1000 10.00

50A1000 10.00

M1000-50A 10.00

50PN1300 13.00

50A1300 13.00

Note : The core loss of POSCO products is the maximum guarantee value at 1.5T and 50Hz.

Electrical Steel

31

1113 2010.11.13 2:27 PM 32 g6

>> Unit Conversion Tables,

The International System

of Units(SI)
Permeability
Oersted

A/m

A/in

7.96 x 10

2.02

1.256 x 10-2

2.54 x 10-2

4.95 x 10-1

3.94 x 10

1 Oersted
1 Ampere per Meter

(A/m)
1 Ampere per Inch
(A/in)

Magnetic Induction
Gauss

Tesla

WB/m2

line/in2

1 Gauss(G)

10-4

10-4

6.45

1 Tesla(T)

104

6.45 x 104

1 Weber per Square

Meter(Wb/m2)

104

6.45 x 104

1 Line per Square

Inch(Line/in2)

1.55 x 10-1

1.55 x 10-5

1.55 x 10-5

Core Loss

32

W/kg

W/lb

1 Watt Per
Kilogram(W/kg)

4.54x10-1

1 Watt Per
Pound(W/lb)

2.204

www.posco.com

1113 2010.11.13 2:28 PM 33 g6

>> Packaging/Marking

PACKAGING / MARKING
Standard packing for domestic sales

Standard packing for export sales

MARKING
Domestic

Export

Electrical Steel

33

1113 2010.11.13 2:28 PM 34 g6

1113 2010.11.13 1:37 PM 2 g6

>>>

Contents
MANUFACTURING PROCESS AND FACILITIES 4
SPECIFICATION & MAIN APPLICATION 6
GRAIN-ORIENTED ELECTRICAL STEEL 8
NON-ORIENTED ELECTRICAL STEEL 14
SURFACE INSULATION 26
STRESS RELIEF ANNEALING 27
RELATIONS AMONG WEIGHT, OUTSIDE DIAMETER AND WIDTH OF COIL 29
MAJOR INTERNATIONAL STANDARDS 30
UNIT CONVERSION TABLES, THE INTERNATIONAL SYSTEM OF UNITS(SI) 32
PACKAGING/MARKING 33
GLOBAL NETWORK 34