Symbol
|
Chemical composition
|
||||
C max
|
Si max
|
Mn
|
P max
|
S max
|
|
SM570
|
0.19
|
0.55
|
1.6 max
|
0.035
|
0.035
|
Symbol |
Yield point or proof stress N/mm2 (min)
|
Tensile strength N/mm2
|
Elongation
|
|||
Thickness of steel mm
|
Thickness of steel mm
|
thinckness
|
Test piece
|
% min
|
||
16 or under
|
Over 16-40
|
100 or under
|
||||
SM570
|
460
|
450
|
570-720
|
<5
|
NO.5
|
19
|
≥5 <16
|
NO.5
|
26
|
||||
≥16 <50
|
NO.5
|
20
|