Thickness, Flatness, Bending

Thickness guarantee

SSAB guarantees a maximum thickness variation within one plate and strip as specified in the tables below.

Strenx® thickness guarantee - plate

Thickness tolerances are according to SSAB´s thickness guarantee and are closer than those specified in EN 10029 except for thicknesses exceeding 80 mm, for which the tolerance range is according to standard.

Nominal thickness (mm)	Thickness tolerances (mm)
	Min	Max	Within plate
4.0 ≤ t < 5.0	-0.3	+0.3	0.4
5.0 ≤ t < 8.0	-0.3	+0.4	0.5
8.0 ≤- t < 15.0	-0.5	+0.4	0.6
15.0 ≤ t < 25.0	-0.6	+0.4	0.6
25.0 ≤ t < 40.0	-0.7	+0.8	0.7
40.0 ≤ t < 80.0	-0.9	+1.4	1.2
80.0 ≤ t < 160.0	-1.1	+2.1	1.5

Other tolerances can be supplied upon special agreement. Please contact your local sales
representative for more information.

Strenx® thickness guarantee - hot rolled strip

Thickness tolerances are according to SSAB´s thickness guarantee and are closer than those specified in EN 10051 strip products. All values in the table conform to 1/2 EN Category D.

Nominal thickness	Thickness tolerances for a nominal width w (mm)
(mm)	w ≤ 1200	1200 < w ≤ 1500	1500 < w ≤ 1800
t ≤ 2.00	± 0.12	± 0.13	± 0.14
2.00 < t ≤ 2.50	± 0.12	± 0.14	± 0.16
2.50 < t ≤ 3.00	± 0.14	± 0.15	± 0.17
3.00 < t ≤ 4.00	± 0.15	± 0.17	± 0.18
4.00 < t ≤ 5.00	± 0.17	± 0.18	± 0.19
5.00 < t ≤ 6.00	± 0.18	± 0.19	± 0.20
6.00 < t ≤ 8.00	± 0.20	± 0.21	± 0.21
8.00 < t ≤ 10.00	± 0.22	± 0.23	± 0.24
10.00 < t ≤ 12.50	± 0.24	± 0.25	± 0.26
12.50 < t ≤ 15.00	± 0.26	± 0.26	± 0.28

Other tolerances can be supplied upon special agreement. Please contact your local sales
representative for more information.

Strenx® thickness guarantee - cold rolled strip

Thickness tolerances are according to SSAB´s thickness guarantee, which corresponds to 3/4 EN 10131 normal tolerances for cold rolled products.

Nominal thickness (mm)	Thickness tolerances for a nominal width w (mm)
	w ≤ 1200	1200 < w ≤ 1500	w > 1500
0.70 ≤ t ≤ 0.80	± 0.04	± 0.06	± 0.07
0.80 < t ≤ 1.00	± 0.06	± 0.07	± 0.08
1.00 < t ≤ 1.20	± 0.07	± 0.08	± 0.09
1.20 < t ≤ 1.60	± 0.09	± 0.10	± 0.12
1.60 < t ≤ 2.00	± 0.12	± 0.12	± 0.14
2.00 < t ≤ 2.10	± 0.14	± 0.15	± 0.16

Other tolerances can be supplied upon special agreement. Please contact your local sales
representative for more information.

Flatness tolerance

SSAB has four classes of flatness tolerances for Strenx®, depending on type of product and material strength. All classes conform to or exceed the specifications in the relevant standards. The flatness tolerances for class C and D fulfill the requirements in EN 10029, class A fulfills both the requirements in EN 10051 and EN 10029, and class B fulfills the requirements in EN 10131.

Class	Product	Nominal thickness (mm)	Flatness (mm/1m ruler) Steel Flatness
A	Strenx® 600MC D/E Strenx® 650MC D/E Strenx® 100 XF Strenx® 110 XF Strenx® 700MC D/E Strenx® 700MC Plus Strenx® 900MC Strenx® 900 Plus Strenx® 960MC Strenx® 960 Plus Strenx® 1100MC Strenx® 1100 Plus	1.5 ≤ t ≤ 12.7	3
B	Strenx® 700 CR Strenx® 960 CR Strenx® 1100 CR	0.7 ≤ t ≤ 2.1	6
C	Strenx® 100 Strenx® 700 E/F Strenx® 700 OME Strenx® 900 E/F Strenx® 960 E/F	4.0 ≤ t < 5.0	5
		5.0 ≤ t < 8.0	4
		8.0 ≤ t < 40.0	3
		40.0 ≤ t ≤ 160.0	3
D	Strenx® 1100 E/F Strenx® 1300 E/F	4.0 ≤ t < 5.0	7
		5.0 ≤ t < 6.0	5
		6.0 ≤ t < 20.0	4
		20.0 ≤ t ≤ 40.0	3

Class A is closer than EN 10051 and EN 10029.
Class B is closer than EN 10131 special tolerance class.
Classes C and D are closer than EN 10029 steel type L.
Short waves (300 - 1000 mm) according to EN 10029. In the case of discrepancies, the given class in the English version shall prevail.

Bending guarantee

Strenx® bending guarantee - plate

SSAB has four bending guarantee classes for Strenx® plate according to the table below. The bending guarantees for Strenx® plate products are based on dies with rolls and normal friction (no lubrication).

These bending guarantees are based on bend tests of one step to 90° after unloading.
All classes conform to or are closer than the requirements in EN 10025-6. The bending guarantees also conform to and exceed the requirements in EN ISO 7438.

Class	Product	Nominal thickness (t) (mm)	Punch radius minimum R/t ⁽¹⁾ Bending direction ⁽²⁾ ┴ ║
A	Strenx® 100 Strenx® 700 E/F Strenx® 700 OME	t < 8	1.5	2.0
		8 ≤ t < 15	1.5	2.0
		15 ≤ t < 20	2.0	2.5
		t ≥ 20	2.0	2.5
B	Strenx® 900 E/F Strenx® 960 E/F	t < 8	2.5	3.0
		8 ≤ t < 15	2.5	3.0
		15 ≤ t < 20	2.5	3.0
		t ≥ 20	3.0	3.5
C	Strenx® 1100 E/F	t < 8	3.0	3.5
		8 ≤ t < 15	3.0	3.5
		15 ≤ t < 20	3.0	3.5
		t ≥ 20	3.5	4.0
D	Strenx® 1300 E/F	t < 8	3.5	4.0
D	Strenx® 1300 E/F	8 ≤ t < 15	4.0	4.5

¹⁾ Rp/t stands for punch radius (Rp) divided by sheet thickness (t).
²⁾ The plate rolling direction.
The guaranteed values for bending are valid under conditions given in the brochure Bending of High Strength Steel. In the case of discrepancies, the given class in the English version shall prevail.

Strenx® bending guarantee -strip

For Strenx® strip products, the relationship between the minimum inner radius and thickness (Ri/t) is shown in the table below. These bending guarantees are based on bend tests of one step to 90° after unloading. Die opening widths are guidelines and may vary somewhat without affecting bending results.

Both Strenx® hot rolled and cold rolled strip steels have a guaranteed minimum bending radius valid for both longitudinal and transversal directions. For the hot rolled materials, the guarantees are closer than the requirements in EN 10149. The guaranteed values can also be found in respective data sheet.

Product	Nominal thickness (t) (mm)	Inner radius minimum Ri/t ⁽¹⁾ Bending direction ┴ ║⁽²⁾	Die opening width (W) min W/ts
Strenx® 600MC D/E	t ≤ 3.0	0.7	10
	3.0 < t ≤ 6.0	1.1	10
	t > 6.0	1.4	10
Strenx® 650MC D/E	t ≤ 3.0	0.8	10
	3.0 < t ≤ 6.0	1.2	10
	t > 6.0	1.5	10
Strenx® 100 XF Strenx® 110 XF Strenx® 700MC D/E	t ≤ 3.0	0.8	10
	3.0 < t ≤ 6.0	1.2	10
	t > 6.0	1.6	10
Strenx® 700 MC Plus	3.0 ≤ t ≤ 10.0	1.0	10
Strenx® 700 MC Plus	t > 10.0	1.5	10
Strenx® 700 CR	0.7 ≤ t ≤ 2.1	2.0	10
Strenx® 900MC	3.0 ≤ t ≤ 8.0	3.0	12
Strenx® 900MC	t > 8.0	3.5	12
Strenx® 900 Plus	2.0 ≤ t ≤ 8.0	3.0	12
Strenx® 960MC	3.0 ≤ t ≤ 10.0	3.5	12
Strenx® 960 Plus	2.0 ≤ t ≤ 8.0	3.5	12
Strenx® 960 CR	0.7 ≤ t ≤ 2.1	3.5	12
Strenx® 1100 Plus	4.0 ≤ t ≤ 6.0	3.5	12
Strenx® 1100 Plus	t > 6.0	4.0	14
Strenx® 1100MC	3.0 ≤ t ≤ 8.0	4.0	14
Strenx® 1100 CR	0.7 ≤ t ≤ 2.1	3.5	14

¹⁾ Ri/t stands for Inner radius (Ri) divided by sheet thickness (t).
²⁾ The sheet rolling direction.
The bending guarantees for Strenx® strip products are based on fixed die edges and normal friction (no lubrication). The guaranteed values for bending are valid under conditions given in the brochure Bending of High Strength Steel. In the case of discrepancies, the given class in the English version shall prevail.