成分比较
SPCC
C ≤0.15 Mn ≤0.60 P≤0.100 S
≤0.05
Q195
C:0.06~0.12 Si:≤0.30 Mn:
0.25~0.50 S:≤0.050 P:≤0.045
Q215
C:0.09~0.15 Si:≤0.30
Mn:0.25~0.55 S:≤0.050(A级),≤0.045(B级) P:≤0.045
Q235A
C:0.14~0.22 Si:≤0.30 Mn:
0.30~0.65 S: ≤0.050 P: ≤0.045