The Chemical Compositon about some materials:
Standard
grade
Chemical composition(%)
C
Si
Mn
P
S
Cu
Ni
Mo
Cr
DIN 17175
ST37
ST35.8
0.07~0.14
0.17~0.37
0.35~0.65
≤0.035
≤0.035
≤0.25
≤0.25
/
≤0.15
DIN 17175
ST42
ST45
0.17~0.23
0.17~0.37
0.35~0.65
≤0.035
≤0.035
≤0.25
≤0.25
/
≤0.25
DIN 1629
Q345
ST52
0.12~0.20
0.20~0.55
1.20~1.60
≤0.035
≤0.035
≤0.25
≤0.25
/
≤0.25
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