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 |
| 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 |
| 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 |
| 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 |
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.
