2007 SECTION II, PART A SA-564/SA-564M

SPECIFICATION FOR HOT-ROLLED

AND COLD-FINISHED AGE-HARDENING
STAINLESS STEEL BARS AND SHAPES

SA-564/SA-564M
~
INTERNATIONAL
Standards Wotldwidf)

(Identical w ith ASTM Specification A 564/ A 564M-02.)

1. Scope 2. Referenced Documents

2.1 ASTM Standards:
1.1 This specification covers bars and shapes of age­
A 314 Specification for Stainless Steel Billets and Bars for
hardening stainless steels. Hot-finished or cold-finished
Forging
rounds, squares, hexagons, bar shapes, angles, tees, and
A 370 Test Methods and Definitions for Mechanical Test­
channels are included; these shapes may be produced by
ing of Steel Products
hot rolling, extruding, or forging. Billets or bars for reforg­
ing may be purchased to this specification. A 484/A 484M Specification for General Requirements
for Stainless Steel Bars, Billets, and Forgings
A 705/A 705M Specification for Age-Hardening, Stainless
1.2 These steels are generally used for parts requiring
Steel Forgings
corrosion resistance and high strength at room temperature,
A 751 Test Methods, Practices, a n d Terminology for
or at temperatures up to 600°F [315°Cj; 700°F [370°C] for
Chemical Analysis of Steel Products
Type 632. They are suitable for machining in the solution­
E 527 Practice for Numbering Metals and Alloys (UNS)
annealed condition after which they may be age-hardened
to the mechanical properties specified in Section 7 without 2.2 Other Documents:
danger of cracking or distortion. Type XM-25 is machin­ SAE J1086 Recommended Practice for Numbering Metals
able in the as-received fully heat treated condition. and Alloys (UNS)

1.3 Types 631 and 632 contain a large amount of ferrite

in the microstructure and can have low ductility in forgings 3. Ordering Information
and larger diameter bars. Applications should be limited 3.1 It is the responsibility of the purchaser to specify
to small diameter bar. all requirements that are necessary for material ordered
under this specification. Such requirements may include
1.4 The values stated in either inch-pound units or Sl but are not limited to the following:
(met ric) units arc to be regarded separately as standards;
3.1.1 Quantity (weight or number of pieces),
within the text and tables, the Sl units arc shown in [brack­
ets!. The values stated in each system are not exact equiva­ 3.1.2 Type or UNS designation (Table 1),
lents; th<;�refore, each system rnust be used independent of 3.1.3 Specific melt type when required,
the other. Combining values from the two systems may
result in nonconformance with the specification. 3.1.4 Heat treated condition (5.1),
3.1.5 Transverse properties when required (7 .6),
L5 Unless the order spccif1es an "M" designation, the 3.1.6 Finish (Specification A 484/A 484M),
material shall be furnished to inth··pound units.
3.1.7 Surface preparation of shapes (5.2.1),

NOTE l For forging�. �ce Specification A 7051 A 705M. 3.1.8 Size, or applicable dimension including diame­
NOTE 2 For billets and hm' ror forging see Specification A 3 14. ter, thickness, width, length, etc.,

1067
SA-564/SA-564M 2007 SECTION II, PART A

3.1.9 Prepar ation for deli very (Specification 6. Chemical Composition

A 484/A 484M), 6.1 Each alloy covered by this specification shall con­
3.1.10 Special requirements (refer to 7.4 and 8.3), form to the chemical requirements specified in Table 1.

3.1.11 Marking requirements (Speci fic ation 6.2 Methods and practices relating to chemical analysis
A 484/A 484M), and required by this specification shall be in accordance with
Test Methods, Practices, and Terminology A 751.
3.1.12 ASTM designation and date of issue if other
than that currently published.
7. Mechanical Properties Requirements
If possible, the intended use of the item should be
3.2
given on the purchase order especially when the item is 7.1 The material, as represented by mechanical test
ordered for a specific end use or uses. specimens, shall conform to the mechanical property
requirements specified in Table 2 and shall be capable of
NOTE 3 A typical ordering description is as follows: 5000 lb [2270 developing the properties in Table 3 when heat treated as
kg] Type 630, Solution,Annealed Cold Finished Ccnterlcss Ground, 1 � in.
specified in 5.1.
138.0 mm] round bar. 10 to 12ft [3.0 to 3.6 m] in length, ASTM A 564
dated . End usc: valve shafts. 7.2 Samples cut from bars for forging stock shall con­
form to the mechanical properties of Table 2 and Table 3
when heat treated as specified in Table 2 and Table 3.
4. General Requirements
7.3 The yield strength shall be determined by the offset
4.1 In addition to the requirements of this specification, method as described in the current edition of Test Methods
all requirements of the current edition of Specifications and Definitions A 370. The limiting permanent offset shall
A 484/A 484M shall apply. Failure to comply with the be 0.2% of the gage length of the specimen.
general requirements of Specification A 484/A 484M con­
7.4 The impact requirement shall apply only when
stitutes nonconformance with this specification.
specified in the purchase order. When specified, the mate­
rial, as represented by impact test specimens, shall be capa­
b l e of developing the impact p r o p erty requirements
5. Materials and Manufacture
specified in Table 3 when heat treated i n accordance
5.1 Heat Treatment:
with 5.1.
5.1.1 Material of types other than XM-16, XM-25,
7.5 Longitudinal impact requirements are not applica­
and Type 630 shall be furnished in the solution-annealed
ble to bars less than % in. ( 16.9 mm) diameter or size or
condition, or in the equalized and oven-tempered condition,
flats less than % in. (16.9 mm) thick.
as noted in Table 2, unless otherwise specified by the
purchaser. 7.6 Tensile and impact requirements in the transverse
(through thickness) direction are not applicable to bars less
5.l.l.l Types 630, XM-16, and XM-25 may be
than 3 in. [75 mm] diameter in size or flats less than 3 in.
furnished in the solution-annealed or age-hardened con­
[75 mm] thick.
dition.
7.7 Material tensile tested and, when specified, impact
5.1.2 Reforging stock shall be supplied in a condition
tested in the transverse (through thickness) direction and
of heut treatment to be selected by the forging manufac­
turer. meeting the requirements shown in Table 3 need not be
tested in the longitudinal direction.
5.2 Shapes may be subjected to either Class A or Class
C preparation as specified on the purchase order.
8. Number of Tests
5.2.1 Class A consists of preparation by grinding for
At least one room temperature tension test and one
8.1
the removal of imperfections of a hazardous nature such
or more hardness tests shall be made on each lot.
as fins, tear.", and jagged edges provided the underweight
tolerance i::; not exceeded and the maximum depth of grind­ 8.2 One or more hardness tests and at least one tension
ing at any one point docs not exceed l 0% of the thickness test shall be made from each lot on test samples heat
of the section. treated as required in 5.1. Unless otherwise specified in
the purchase order, the condition of hardening heat treat­
5.2.2 Class C consists of preparation by grinding for
ment shall be at the option of the producer. The tests shall
the removal of all visible surface imperfections provided
meet the requirements of Table 3.
the underweight tolerance is not exceeded and the maxi­
mum depth of grinding at uny one point docs not exceed 8.3 When specified in the purchase order, the impact
I 0% or the thickness of the section. test shall consist of testing three Charpy V-notch Type A

1068
 2007 SECTION II, PART A SA-564/SA-564M

specimens in accordance with Methods and Definitions 80°F, [20 to 25°C] the impact test requirements will be as
A 370. The specimens shall be heat treated in accordance agreed upon by purchaser and producer.
with 5.1. Unless otherwise specified in the purchase order,
the condition of hardening heat treatment shall be at the
option of the producer and testing shall be done at 70 to 9. Keywords
80°F [20 to 25°C]. The tests shall meet the requirements 9.1age-hardening stainless steel; precipitation harden­
of Table 3. When tested at temperatures other than 70 to ing stainless steel; stainless steel bars; stainless steel shapes

1069
 TABLE 1
CHEMICAL REQUIREMENTSA

Composition, %

UNS Other
Designation8 Type Carbon Manganese Phosphorus Sulfur Silicon Chromium Nickel Aluminum Molybdenum Titanium Copper Elements

c
517400 630 0.07 1.00 0.040 0.030 1.00 15.00-17.50 3.00-5.00 . . . . . . . . . 3.00-5.00
517700 631 0.09 1.00 0.040 0.030 1.00 16.00-18.00 6.50-7.75 0.75-1.50 . . . . . . . . . .. .
515700 632 0.09 1.00 0.040 0.030 1.00 14.00-16.00 6.50-7.75 0.75-1.50 2.00-3.00 . . . . . . . . .
D
535500 634 0.10-0.15 0.50-1.25 0.040 0.030 0.50 15.00-16.00 4.00-5.00 . . . 2.50-3.25 . . . . . .
517600 635 0.08 1.00 0.040 0.030 1.00 16.00-17.50 6.00-7.50 0.40 . . . 0.40-1.20 . . . . .
c
.

515500 XM-12 0.07 1.00 0.040 0.030 1.00 14.00-15.50 3.50-5.50 . . . . . . .. . 2.50-4.50
E
513800 XM-13 0.
05 0.20 0.010 0.008 0.10 12.25-13.25 7.50-8.50 0.90-1.35 2.00-2.50 . . . . . .
F

l
545500 XM-16 0.03 0.50 0.015 0.015 0.50 11.00-12.50 7.50-9.50 . . . 0.50 0.90-1.40 1.50-2.50
F
545503 . 0.010 0.50 0.010 0.010 11.00-12.50 7.50-9.50 . . . 0.50 1.00-1.35 1.50-2.50

L:::
. .

G
545000 XM-25 0.05 1.00 0.030 0.030 14.00-16.00 5.00-7.00 .. 0.50-1.00 . . 1.25-1.75

J
. .

10.75-
E
S46500 . . . 0.02 0.25 0.015 0.010 11.00-12.50 11.25 . . . 0.75-1.25 1.50-1.80 . . .

A Limits are in percent maximum unless shown as a range or stated otherwise.

8 New designation established in accordance with Practice E 527 and 5AE J1086.
c
Columbium plus tantalum 0.15-0.45.
0 Nitrogen 0.07-0.13.
E
Nitrogen 0.0 1.
F
Columbium plus tantalum 0.10-0.50.
G Columbium 8 times carbon minimum.
 TABLE 2
SOLUTION TREATMENT
Mechanical Test Requirements in Solution Treated ConditionA

Tensile Strength, Yield Strength, Elongation

min min8 in 2 in. Reduction
UNS [50 mm] or of Area, Rockwell C, Brine II,
Designation Type Con d ition Solution T reatmen t ksi [MPaJ ksi CMPaJ 4D, min,% min, o/o max max

$17400 630 A 1900 ± 25°F [1040 ± 15°CJ . . . . . . . . . .. . . . . . . . 38 363

(cool as required to below
90°F <32•cn

S17700 631 A 1900 ± 25°F [1040 ± 15°CJ . . . . . . . . . . . . . . . .. . HRB98 229

(water quench)

S15700 632 A 1900 ± 25°F D040 ± 15°CJ . . . . . . . . . . . . . . . . . . H R 8100

(water quench)

E E
S35500 634 A 1900 ± 25°F [1040 ± l5°CJ . . . . . . . . . . . . . . . . . . . .. 363
.,
quench, hold not less than 3 <:>
h at minus 100°F or lower �
00
l"l
Sl7600 635 A 1900 ± 25°F [1040 ± 15°C] 120 [825] 75 [515] 10 45 32 302 (")
,..,
-
(air cool)
0 0
-..l z
S15500 XM-12 A 1900 ± 25°F [1040 ± 15°C] . . . . . . . . . . . . . . . 38 363
(cool as required to below
J=l
90°F (32°Cll �
::d
,..,
Sl3800 XM-13 A 1700 ± 25°F [925 ± 15°CJ . . . .. . . .. . . . . . . .. . 38 363 >
Cool as required to below
60°F [16°C]

S45500 XM-16 A 1525 ± 25°F [830 ± 15°CJ . . . . . . .. . . . . . .. . . . 36 331

(cool rapidly)

F
S45000 XM-25 A 1900 ± 25°F [1040 ± 15°CJ l25 [860] 95 [655] 10 40 32 321
(cool rapidly)

S45503 . . . A 1525 ± 25°F [830 ± 15°C] . . . . . . . . . . . . . .. . . . 36 331

(cool rapidly)

S46500 . . . A 1800 ± 25°F [980 ± 15°CJ . . . . . . . . . . . . . . . . . . 36 331

(oil or water quench), hold
for min. 8 hat minus 100°F
00
(73°Cl, air warm
>
u.
CO\
A See 7.1. .j>.
....,
8 See 7.3. 00

c Either Rockwell C hardness or Brinell is permissible. On sizes 1;, in. 02.70 mml and smaller, Rockwell c is preferred.
�
"'
0 321 BH for rounds cold drawn after solution treating. �
E Equalization and over-tempering treatment 1425 ± 50°F (775 ± 30°CJ for not less than 3 h, cool to room temperature, heat to 1075 ± 25°F [580 ± l5°CJ for not Jess than 3 h.
a:
F Maximum 165 ksi [1140 M PaJ tensile strength only for sizes up to 1;2 in. (13 mm).
SA-564/SA-564M 2007 SECTION II, PART A

TABLE 3
MECHANICAL TEST REQUIREMENTS AFTER AGE HARDENING HEAT TREATMENT A

Yield Impact
Suggested Hardening or Aging Tensile Strength, Elongation Charpy-V,
Treatment, or botha,c,n Strength, min minF in 2 in. Hardness• min
Applicable [50 mml Reduction
Temperature, Time, Thickness, ln. and Test or 40, of area, Rockwell C, Brfnell,
Type Condition "F ("Cl h QuenchH DirectionE ksl [MPal ksi [MPal mini o/o min,% min min ft·l bf

630 H900 900 [480) l .O air cool Up to 3 in. inc! 190 [13101 1 70 [11701 10 40 40 388
[75 mml (LJ

Over 3 in. [75 mml to 35

8 in. incl l200 mmJ
(T)

H925 925 [495] 4.0 air cool Up to 3 in. incl 170 (11701 155 (1070] 10 44 38 375 5 6.8
[75 mml (L)

Over 3 in. [75 mmJ to 38

8 ln. incl [200 mml
(T)

H 1 025 1025 [550] 4.0 air cool 155 [1070] 145 [1000] 12 45 35 331 15 20

H1075 1075 (580] 4.0 air cool 145 [1000) 125 (860] 13 45 32 311 20 27

HllOO 1100 [595] 4.0 air cool Up to 8 in. inc! 140 [965] 1 15 (795] 14 45 31 302 25 34
[200 mml (L)

H1150 1 1 50 (620] 4 .0 air cool 135 (930] 105 (725] 16 50 28 277 30 41

-------

Hll50M 1400 (760'! for 2 h1 alr cool plus ll5 (795] 75 [520] 18 55 24 255 55 75
1 150 [620] for 4 h, air cool
-------

H 1 1500 1 150 [620) for 4 h, air cool plus 125 [860] 105 [725) 16 50 24 255 30 41
1150 [6201 for 4 h, air cool 33 max 311
max

631 1750'F f.955'Cl for not less than

10 rnln, but not more than 1 h,
cool rapidly to room tempercl­
turc, Cool within 24 h to min us Up to 4 in. incl.
185 [1280] 1 50 [1030] 10 41 388
100 ± 1 0°F (75'C:J, hold not less (100 mml (L)
than 8 h. W arrn in alr to room
temperature. Hea t to 950°F
[5l0°C]1 hold 1 h, air cool.

TH1050 Al ternative trcotmcnt: 1400'F

(760"C l hold �)0 rnln1 cool to 55
± �)''F [15 J: 3°C ] within 1 h. Up to 6 in. incl
170 ( 1 170] 140 (965] 6 25 38 352
Hold not less than 30 min1 heat (ISO mml (L)
to 1050"F [565"Cl hold for 90
rnin, air cool.

612 Up to 4 ln. lncl

RH950 (100 mml Ill 200 (1380] 175 (1210] 25 415

TH 1050 Type631 Up to 6 in. in c l

180 [1240] 160 ( 1 100] 25 375
(150 mm] IU

H1000 1750 f'155J for not less than 1 0

rnin, but n o t more t h a n 1 tl.
Watt:r quench. Cool to not higher
than mlm1s lOO(lF [75{)Cl Hold 170 (1 170] 155 (1070] 12 25 37 341
for not less th�m 3 h, Temper at
1000"F 1540"C], holding for not
le:;s thrm 3 h.

635 H9!>0 {/�)0 15101 0.5 air cool 190 1:1310] 170 [1170) 25 39 363

H1000 lOOO 1540] 0.5 air cool 180 U240l 160 lllOOl 30 37 352

Hl050 1.050 [565,1 0.5 air cool 170 ( 1170) 150 [1035] 10 40 35 331

11900 900 [4801 1.0 air cool Up to 12 ln. incl

(300 mml Ill 10 35
190 U310l 170 [1 170] 40 388
Up to 12 in. incl 6 15
(300 mml (Tl

4,0 air cool Up to 12 in. /ncl

(300 mm] (L) 10 38 6.8
170 ( 1 170] 155 [ 1070] 38 375
Up to 12 ln. incl 20
Ooo mml (T)

1072
 2007 SECTION II, PART A SA-564/SA-564M

TABLE 3
MECHANICAL TEST REQUIREMENTS AFTER AGE HARDENING HEAT TREATMENTA CCONT'D)

Yield Impact
Suggested Hardening or Aging Tensile Strength, Elongation Charpy-V,
Treatment, or boths,c,o Strength, min minF in 2 in. HardnessG min
Ap plicable [50 mml Reduction
Temperature, Thickness, In. and Test or 40, of a real Rockwell C, Brinell,
Type Condition "F l"Cl DirectionE ksi (MPaJ ksi CMPal min,% min, o/o min min ft·lbf

XM-12 H1025 1025 (550] 4,0 air coo l Up to 12 in. ind

[300 mml (U 12 45 15 20
155 [10701 145 ClOOOl 35 331
Up to 12 in. inc! 27 10 14
DOO mml (Tl

H1075 1075 [5801 4.0 air cool Up to 12 in. lncl

[300 mml (U 13 45 20 27
145 [1000] 125 [860] 32 311
Up to 12 in. in cl 28 15 20
[300 mml (T)

/11100 1100 [595] 4.0 air cool Up to 12 in. inc!

[300 mml (l) 14 45 25 34
140 [905] 115 [795] 31 302
Up to 12 ln. inc! 10 29 15 20
[300 mml IT)

Hll50 1150 [620] 4.0 al r cool Up to 12 in. ind

DOO mml (LJ 16 50 30 41
135 [930] 105 [725] 28 277
Up to 12 in. in-cl 11 30 20 27
[300 mm] IT)

Hll50M 1400 1:760'1 for 2 h, air cool plus Up to 12 ln. Inc!

1150 l620J for 4 h, ai r cool [300 mml ( Ll 18 55 55 75
115 (795] 75 [5151 24 255
Up to 12 ln. incl 14 35 35 47
[300 mml (T)

XM-13 H950 950 [5101 4.0 a!r cool Up to 12 ln. inc!

[300 mml (Ll 45
220 ll520l 205 ll415l 10 45 430
Up to 12 in . incl 35
1.300 mml (T)

111000 1000 (C,40l 4,0 air coo! Up to 12 in, inc!

000 mml (L) 10 50
205 [1415] 190 (1310] 43 400
Up to 12 ln. Inc! 10 40
[300 mml (T)

H1025 4.0 air cool Up to 12 in. Inc!

IJOO m ml Ill 50
185 Cl280l 175 (1210] 11 41 380
Up to 12 ln. inc! 45
Ooo mmJ ITJ

1-1!050 l050 i 56�] 4.0 ail' cool Up to 12 in. inc I

(300 mml (L) 50
175 [12101 165 [1140] 12 40 372
Up to 12 in. Inc! 45
f300 rnml IT)

HllOO 11.0 air cool Up to 12 in, incl

[300 mm] (L) 50
150 [1035] 135 (930] 14 34 313
Up to 12 in. incl 50
[300 mmJ (T)

Hll '>0 ll!>O [670 I 4.0 air cool Up to 12 in. lncl

UOO rnrnJ ILl 50
135 [930] 90 {620] 14 30 283
Up to 12 ln. incl 50
[300 mml (T)

Ill 150M 1400 r-160 I for ?. h, air cool plus Up to 12 in. inc!
uso rb201 fm· 4 h, {i!r cool [300 rnmJ (Ll 55
125 (860] 85 (585] 16 26 259
Up to 12 in, incl 55
[300 mml (T)

1073
SA-564/SA-564M 2007 SECTION II, PART A

TABLE 3
MECHANICAL TEST REQUIREMENTS AFTER AGE HARDENING HEAT TREATMENTA CCONT'D)
Yield Impact
Suggested Hardening or Aging Tensile Strength, Elongation Charpy-V,
Treatment, or botht.t(.O Strength, min minF in 2 in. Hardness" min
Applicable [50 mml Reduction
Temperature, TimeJ Thickness1 in. and Test or 40, of area, R ockwell C, Brinell,
Type Condition °F ["C] h QuenchH Direction£ ksi [MPal ksi [MPal min,% min, 0/o min min ft-lbf

X M -16 H900 900 IA80l 4.0 a it' cool 235 [1620] 220 [1515] 8 30 47 444

Up to 6 in. incl
H950 95015101 �.0 alr cool 220 [1515J 205 [14151 10 40 44 415
1150 mml {L)

H1000 1000 (540] 4.0 air cool 205 [1415] 185 (1275] 10 40 40 363

S45503 Up to 6 in. incl

1150 rnrnl (L) 30
H900 <JOO [4801 4.0 alr cool 235 [1620) 220 [1520] 47 444
Up to 6 in. in c! 4 15
[150 mrnl (T)

Up to 6 in. inc!
[150 rnrn] ( U 10 40
N950 950 1510] 4.0 air cool 220 [1515] 205 [1410] 44 415
Up to 6 in. inc I 20
mmJ (T}

Up to 6 in. inc l
[!50 mm.l Ill 10 40
H1000 1000 15•10 I 4.0 air cool 205 [1410] 185 []275) 40 363
Up to 6 ln. inc I 6 25
(150 :nml tTl

XM·25 Up to 12 in. i ncl

[300 mm] IU 10 40
li900 QOO (4801 4.0 a it· cool 180 [12401 170 [1170] 39 363
Up to 12 in. incl. 6 20
1300 mml <Tl

Up to 12 in. inc!
1:300 mml ill 10 40
H9�)0 950 15to'l 4. 0 C1ir cool 170 [11701 160 [1100] 37 341
Up to t2 in. ind 22
[300 rnm] (T)

Up to 12 irL inc!
1100 mml tll 12 45
111000 10001540) 4,0 air coo! 160 [1100] 150 [1035] 36 331
Up to 12 in. i nc! 27
1.300 rmnl ( T)
-------·

Up to 8 in. inci
H102�1 Hl2'J ElSO I 4.0 air cool 150 fl035l 140 [9651 12 45 34 321
[200 mml (L)
�-w.-�·---�-••

Up to 12 in. inc!
UOO rnmJ Ill 12 45
fiJO'iO L050 [�65l 4.0 ;:\lr cool 145 [10001 135 [930] 34 321
Up to 12 in. inc.! 30
1.300 rnrnl (T)
----�-�-··----·...�---���·�

Up to 12 ln. i1:cl
1300 mm I tLI 16 50
11\1(1(1 1100 f1J'!�l 4.0 nit cool 130 [895] 105 [725] 30 285
Up to 12 in . ind 11 30
1300 nHnl (T)

1074
 2007 SECTION II, PART A SA-564/SA-564M

TABLE 3
MECHANICAL TEST REQUIREMENTS AFTER AGE HARDENING HEAT TREATMENTA (CONT'D)
Yield Impact
Suggested Hardening or Aging Tensile Strength, Elongation Charpy-V,
Treatment, or bott1z;: .c, o Strength, min minF in 2 in. HardnessG min
Applicable [50 mml Reduction
Temperature1 Time, Thickness, ln. and Test or 40, of arear Rockwell c, Brinell,
Type Condition "F ("Cl h Quench" Direction£ ksi [MPal ksi CMPal min,% min, % min min

Up to 12 in. incl
[300 rnrn.l ( U 10 55
Hll50 1150 (620] 4.0 air cool 125 [860] 75 [515) 26 2&2
Up to 12 in. inc! 12 35
[300 mml (T)

546500 Up to 12 in. lncl

1:300 rnrnl (U
air
10 45
or
H950 950 [510) �.0 240 [1655] 220 D515l 47 444
in.
oil
Up to 12 inc!. 8 35
[300 nun] (T)

Up to 12 1n. inc[
Doo mrn] (LJ 10 50
air or
H1000 1000 (5�01 4.0 220 [1515] 200 [1380) 45 430
all
Up to 12 in. incl. 10 40
1300 mrnl (T)

A Sec 7.1.

11 Tirne refers to rninirnurn time material is at temperature and may be extended to obtain required ductility properties.

c Unless othe1·wise noted, temperatUI·es shown are sug9ested temperatures and may be varied to obtain required tensile properties.

0 Intermediate temperatures must rneet the ductility requirements of the next highest suggested hardening or aging temperature, or both.

Example: Type 630 at 1050°F [565°C] must have 13% elongation and 45% reduction, sarne as for age hardening at 1075°F [580°Cl
(U Longitudinal axis of specimen parallel to direction of grain A ow during rolling or forging. (T) - Transverse axis of specimen per-
pendicular to direction of grain flow durincJ rolling o1· forging.
r
See 7.3.
(;Either l�ockwcll C hardness or Brinell is permissible. On sizes'\;, in. (12.70 mrn) and smaller, Rockwell C is preferred.
N When air cooling is specified, gases other than air may be used.

1 Refer to Table 2 for details on equalize and over temper heat treatment.

1075
1076