PSA PEUGEOT – CITROËN

B53 3072
NORMES VEHICULES

STEEL FLAT PRODUCTS

HOT OR COLD ROLLED
DIMENSIONAL REQUIREMENTS
Page 1/6
This norme REPLACES normes B53 3054, B53 3058

This is a translation, the French original shall be used in all cases of litigation Date of translation : 03/03/2003

CONTENTS
1. OBJECT 1
2. DIMENSIONAL TOLERANCES 2
2.1. THICKNESS TOLERANCES 2
2.2. WIDTH TOLERANCES 3
2.3. LENGTH TOLERANCES 4
3. FORM TOLERANCES 4
3.1. SQUARENESS 4
3.2. STRAIGHTNESS OF EDGES 4
3.3. FLATNESS 5
4. RECORDS AND REFERENCE DOCUMENTS 6
4.1. RECORDS 6
4.2. REFERENCE DOCUMENTS 6
4.3. EQUIVALENT TO : 6
4.4. CONFORMS TO : 6
4.5. KEY-WORDS 6

1. OBJECT

This norme defines the dimensional requirements of flat products for pressing in the form of wide steel
strips, alloy or non alloy, hot or cold rolled, uncoated or coated, delivered in sheets or coils.

It also includes slit strips delivered in rolls or bars obtained from the above products.

The dimensional requirements for cold rolled strips are defined in norme B53 3077.

OR 01/11/1991 E : 03/07/2002 General use

 PSA PEUGEOT - CITROÊN
STEEL FLAT PRODUCTS HOT OR COLD ROLLED B53 3072 2/6

2. DIMENSIONAL TOLERANCES

2.1 THICKNESS TOLERANCES

The measurement must be taken at any point located :

• at more than 40 mm from the edges,
• from the ends and excluding the welding areas for the coils.
For coated products, the thicknesses and corresponding tolerances only apply to the bare metal substrate.
The coating thickness is added to that specified in the following tables.

2.1.1 COLD ROLLED AND COATED

Steel sheet tolerances for pressing and bending (Extra Mild, Bake hardened, Rephosphorised, Dispersoids and Dua
Phase grades).
Three tolerance categories are defined in relation to tensile strength (Rm) in the longitudinal direction indicated in
the specific cahiers de charges :
• category 1 : products where Rm is less than or equal; to 430 MPa
• category 2 : products where Rm is between 430 and 475 MPa inclusive
• category 3 : products where Rm is greater than 475 MPa.

Nominal thickness Thickness tolerances in mm (value in + and -)

of metal substrate Category 1 Category 2 Category 3
e (mm)
ex : C, E, ES, E180BH ex : E 335 D, E390D ex : DP600, DP780
P220, E220BH,
P260, E 275 D
0,57 0,03 0,035 0,04
0,62 0,03 0,04 0,05
0,67 0,03 0,04 0,05
0,72 0,03 0,04 0,05
0,77 0,03 0,04 0,05
0,82 0,04 0,045 0,055
0,87 0,04 0,045 0,055
0,92 0,04 0,045 0,055
0,97 0,04 0,045 0,055
1,07 0,04 0,045 0,055
1,17 0,04 0,045 0,055
1,27 0,04 0,045 0,055
1,37 0,04 0,045 0,055
1,47 0,05 0,055 0,065
1,76 0,06 0,07 0,08
1,95 0,06 0,07 0,08
2,15 0,08 0,09 0,1
2,44 0,08 0,09 0,1
2,64 0,1 0,11` 0,12
2,93 0,1 0,11 0,12

OR 01/11/1991 E : 03/07/2002 General use

 PSA PEUGEOT - CITROÊN
STEEL FLAT PRODUCTS HOT OR COLD ROLLED B53 3072 3/6

2.1.2 HOT ROLLED AND COATED

Steel sheet tolerances of pressing and bending (Grades : 1C, 3C, HE 275, HE 335 D, HE 390 D, HE 445 D,
HE 490 D, HR 45, HR 55, HR 60).
Three categories of tolerances are defined in relation to the tensile strength (Rm) in the longitudinal direction
indicated in the specific cahiers des charges :
• category 1 : products where Rm is less than 410 MPa,
• category 2 : products where Rm is between 410 and 520 MPa inclusive,
• category 3 : products where Rm is greater than 520 MPa,

Nominal thickness Thickness tolerances in mm (values in + and -)

of metal substrate
Category 1 Category 2 Category 3
e (mm)
ex: 1C, 3C, ex : HE 335 D, HE 390 D, ex : HE 445 D,
HE 275 HR 45 HR 490 D, HR 55, HR 60.
1,8 0,1 0,11 0,12
2 0,1 0,11 0,12
2,2 0,1 0,12 0,13
2,5 0,1 0,12 0,13
2,7 0,11 0,13 0,14
3 0,11 0,13 0,14
3,5 0,11 0,13 0,14
4 0,12 0,14 0,15
5 0,14 0,16 0,17
6 0,15 0,17 0,18
7 0,16 0,18 0,19
8 0,17 0,19 0,2
9 0,18 0,2 0,21
10 0,19 0,21 0,22

2.2 WIDTH TOLERANCES

(In mm)
2.2.1 WIDE STRIPS
Standard tolerances
Cold rolled and
Hot rolled Galvanised
zinc electroplated

+3/-0 +4/-0 +5/-0

Reduced tolerances
Cold rolled and
Hot rolled Galvanised
zinc electroplated
+3/-0 +3/-0 +3/-0
Note : For strips between 500 mm and 700 mm wide, if a reduced tolerance is necessary, it must be specified on
the order.

OR 01/11/1991 E : 03/07/2002 General use

 PSA PEUGEOT - CITROÊN
STEEL FLAT PRODUCTS HOT OR COLD ROLLED B53 3072 4/6

2.2.2 SLIT STRIPS

Width Tolerances (mm)

L (mm)
Thickness e (mm)
e ≤1 1 < e ≤2 2 < e ≤2,99 2,99 < e ≤4 e>4
L ≤100 + 0,3 / - 0 + 0,4 / - 0 + 0,6 / - 0 + 0,8 / - 0 +1/-0
100 < L ≤150 + 0,4 / - 0 + 0,5 / - 0 + 0,6 / - 0 + 0,8 / - 0 +1/-0
150 < L ≤250 + 0,5 / - 0 + 0,6 / - 0 + 0,8 / - 0 + 0,9 / - 0 +1/-0
250 < L ≤350 + 0,6 / - 0 + 0,7 / - 0 + 0,8 / - 0 + 0,9 / - 0 +1/-0
350 < L ≤500 + 0,7 / - 0 + 0,8 / - 0 +1/-0 + 1,2 / - 0 + 1,2 / - 0
500 < L ≤600 + 0,8 / - 0 + 0,8 / - 0 +1/-0 + 1,2 / - 0 + 1,2 / - 0

2.3 LENGTH TOLERANCES

Sheets and bars.

L (mm) Tolerances (mm)

Hot and cold rolled
≤2 000 +5/-0
> 2 000 + 10 / - 0

3.0 FORM TOLERANCES

3.1 SQUARENESS

The size of sheets and bars ordered must be the same as those delivered.

3.2 STRAIGHTNESS OF EDGES

Measured over a length of 1 metre, the maximum deflection must not exceed the values shown in the table below.

Width of the sheet in mm Maximum deflection in mm

10 ≤L < 25 2,00
25 ≤L < 40 1,50
40 ≤L < 125 1,25
125 ≤L ≤300 1,00
L > 300 0,40

OR 01/11/1991 E : 03/07/2002 General use

 PSA PEUGEOT - CITROÊN
STEEL FLAT PRODUCTS HOT OR COLD ROLLED B53 3072 5/6

3.3 FLATNESS

The frequency and length of the undulations as well as blisters must not be detrimental to the use of the sheet.

Cold rolled
In the case of litigation, two measurements are carried out :
a) Length of undulation or blisters
In the case of blisters the smallest of the two dimensions is retained as the undulation length.
b) Undulation deflection :
This deflection must be < 1% of the undulation length with a maximum quoted in the table below.

Length L Maximum variation (mm)

(mm)
Pressing sheets Sheets for mechanical use
extra mild and E 275 D and E 355D, E 390 D
L ≤1 200 10 15
1 200 ≤L < 1 500 15 20
L ≥ 1 500 20 to be advised

Hot rolled

Length L Thickness (mm)

(mm)
e<2 2 ≤e ≤8
L ≤1 200 18 15
1 200 < L ≤1 500 20 18
1 500 < L ≤1 850 25 23

Note : The maximum variations shown for lengths greater than 1 200 mm are only guaranteed for deliveries of the
same size exceeding 20 tonnes.

OR 01/11/1991 E : 03/07/2002 General use

 PSA PEUGEOT - CITROÊN
STEEL FLAT PRODUCTS HOT OR COLD ROLLED B53 3072 6/6

4. RECORDS AND REFERENCE DOCUMENTS

4.1. RECORDS

4.1.1. CREATION
• OR : 01/11/1991 – CREATION OF THE NORME.

4.1.2. SUBJECT OF THE MODIFICATION

• E : 03/07/2002 – MODIFICATION TO THE WIDTH TOLERANCES FOR WIDE BANDS § 2.2.1 STANDARD
TOLERANCES AND REDUCED TOLERANCES.
• D : 14/11/2001 – GRADES DP600, DP780 ADDED; P280 DELETED; TOLERANCE MODIFICATIONS ON
WIDTH OF WIDE STRIPS.

4.2. REFERENCE DOCUMENTS

4.2.1. PSA DOCUMENTS

4.2.1.1 Normes
B53 3077 STEEL – FLAT PRODUCTS – COLD ROLLED STRIP – DIMENSIONAL REQUIREMENTS

4.2.1.2. Others

4.2.2. EXTERNAL DOCUMENTS

4.3. EQUIVALENT TO :

4.4. CONFORMS TO :

4.5. KEY-WORDS

OR 01/11/1991 E : 03/07/2002 General use