Thickness, Flatness, Bending

Thickness guarantee

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

Thickness guarantess - Hot Rolled Plate

The thickness tolerances according to SSAB ́s thickness guarantee are closer than those specified
in EN 10 029 except for ≥ 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 tolerance classes within the above defined tolerance ranges can be supplied upon agreement.
Thickness tolerance - extra close can be supplied after special agreement for plate.

Thickness gurantees - Hot Rolled Strip

The thickness tolerances according to SSAB´s thickness guarantee are closer than those specified in
EN 10 051 for hot-rolled strip products.

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

All values in the table conform to 1/2 EN Category D.
Thickness tolerance - extra close can be supplied after special agreement for hot rolled strip products.

Thickness guarantee - Cold Rolled Strip

The thickness tolerances according to SSAB´s Thickness guarantee are according to those
specified in EN 10 131 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 tolerance classes within the above defined tolerance ranges can be supplied upon agreement.

Flatness tolerance

SSAB has four classes of flatness tolerances for Strenx®, depending on type of product and material strength. All classes conform to, or are better than 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® 700HR W Strenx® 900MC Strenx® 900 Plus Strenx® 960MC Strenx® 960 Plus Strenx® 960 HR W Strenx® 1100MC	1.5 ≤ t ≤ 12.7	3
B	Strenx® 700 CR Strenx® 700 CR W Strenx® 960 CR Strenx® 1100 CR	0.7 ≤ t ≤ 2.1	6
C	Strenx® 100 Strenx® 700 E/F Strenx® 700 OME Strenx® P700 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). R/t stands for radius (R) divided by sheet thickness (t). 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)	Guaranteed minimum final inner radius on plate		Recommended minimum punch radius to use		Die opening width (W) minimum W/t
Class	Product	Nominal thickness (t) (mm)	Ri/t transverse to rolling direction	Ri/t along rolling direction	Rp/t transverse to rolling direction	Rp/t along rolling direction	Die opening width (W) minimum W/t
A	Strenx® 100 Strenx® 700 E/F Strenx® P700 Strenx® 700 OME	t < 8	1.3	1.8	1.5	2.0	10
		8 ≤ t < 15	1.3	1.8	1.5	2.0	10
		15 ≤ t < 20	1.7	2.1	2.0	2.5	12
		t ≥ 20	1.7	2.1	2.0	2.5	12
B	Strenx® 900 E/F Strenx® 960 E/F	t < 8	2.3	2.5	2.5	3.0	12
		8 ≤ t < 15	2.3	2.6	2.5	3.0	14
		15 ≤ t < 20	2.4	2.7	2.5	3.0	14
		t ≥ 20	2.8	3.4	3.0	3.5	16
C	Strenx® 1100 E/F	t < 8	2.8	3.3	3.0	3.5	12
		8 ≤ t < 15	2.6	3.2	3.0	3.5	14
		15 ≤ t < 20	2.5	3.1	3.0	3.5	14
		t ≥ 20	3.0	3.5	3.5	4.0	16
D	Strenx® 1300 E/F	t < 8	3.1	3.8	3.5	4.0	14
D	Strenx® 1300 E/F	8 ≤ t < 15	3.6	4.3	4.0	4.5	14

The guaranteed values for bending are valid under conditions given in the brochure Bending of Strenx^®. In the case of discrepancies, the given class in the English version shall prevail.

Strenx® bending guarantee strip

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). R/t stands for radius (R) divided by sheet thickness (t). 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)	Guaranteed minimum final inner radius on sheet		Recommended minimum punch radius to use		Die opening width (W) min W/ts
Product	Nominal thickness (t) (mm)	Ri/t transverse to rolling direction	Ri/t along rolling direction	Rp/t transverse to rolling direction	Rp/t along rolling direction	Die opening width (W) min W/ts
Strenx® 600MC D/E	t ≤ 3.0	0.7	0.7	0.7	0.7	10
	3.0 < t ≤ 6.0	1.1	1.1	1.1	1.1	10
	t > 6.0	1.4	1.4	1.4	1.4	10
Strenx® 650MC D/E Strenx® 100 XF	t ≤ 3.0	0.8	0.8	0.8	0.8	10
	3.0 < t ≤ 6.0	1.2	1.2	1.2	1.2	10
	t > 6.0	1.5	1.5	1.5	1.5	10
Strenx® 110 XF Strenx® 700MC D/E	t ≤ 3.0	0.8	0.8	1.0	1.0	10
	3.0 < t ≤ 6.0	1.2	1.2	1.4	1.4	10
	t > 6.0	1.6	1.6	1.7	1.7	10
Strenx® 700 HR W	3.0 ≤ t ≤ 6.0	1.2	1.2	1.4	1.4	10
Strenx® 700 HR W	t > 6.0	1.6	1.6	1.7	1.7	10
Strenx® 700 MC Plus	3.0 ≤ t ≤ 10.0	1.0	1.0	1.3	1.3	10
Strenx® 700 MC Plus	t > 10.0	1.5	1.5	1.8	1.8	10
Strenx® 700 CR	0.7 ≤ t ≤ 2.1	2.0	2.0	2.5	2.5	10
Strenx® 900MC	3.0 ≤ t ≤ 8.0	3.0	3.0	3.0	3.25	12
Strenx® 900MC	t > 8.0	3.5	3.5	3.5	3.75	12
Strenx® 900 Plus	2.0 ≤ t ≤ 8.0	3.0	3.0	4.0	4.0	12
Strenx® 960MC	3.0 < t ≤ 10.0	3.5	3.5	3.6	4.0	12
Strenx® 960 HR W	3.0 < t ≤ 6.1	3.5	3.5	4.0	4.0	12
Strenx® 960 Plus	2.0 ≤ t ≤ 8.0	3.5	3.5	4.0	4.2	12
Strenx® 960 CR	0.8 ≤ t ≤ 2.1	3.5	3.5	4.5	4.5	12
Strenx® 1100MC	3.0 ≤ t ≤ 8.0	4.0	4.0	4.7	5.0	14
Strenx® 1100 CR	0.8 ≤ t ≤ 2.1	3.5	3.5	4.5	4.5	14

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.