Note: The samples of tensile and bending tests are taken in transverse way.
Steel grade
Tensile strength test
V impa
s/MP a Upper yield stress
6b/MPa Tensile strength
Elongation 5/%
ct test
L0=80mm b 20mm
1... 5. 65^
Thickness
Thickness
Tempr.
Impa ct
< 3.0
2?3.0
> 1.5~2
> 2~2.5
> 2.5~3.0
> 3.0
St33
≥ 185
310~540
290~510
≥ 10
≥ 11
≥12
≥ 16
~
~
St37-2
≥ 235
360 ~ 510
340~470
5sl7
≥ 18
≥19
≥ 24
+20
≤ 27
St37-3
0
≥ 27
St44-2
≥ 27 5
430 ~ 580
410~540
≤ 14
≥ 15
≥ 16
≥ 20
+20
≤ 27
St50-2
≥ 295
490 ~ 660
470~610
≥ 12
≥ 13
≥14
≥ 18
~
~
St52-3
≥ 35 5
510 ~ 680
490~630
≥ 14
≥ 15
≥16
≥ 20
0
≥ 27
Note: 1. Tensile and bending test samples are taken in transverse way; shock test
sample is taken in longitudinal way; Rpo ?., is applied when yielding is not distinctive.
2. Bending sample breadth is >20mm. 3. Shock test is only fit for products with
thickness more than 12.0mm. 4. Impact value is a average value from three testing
samples, of which only one sample testing value is permitted to be smaller than
setup, but not less than 75%.
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