标记为:SPCC-1,SPCC-2,SPCC-4,SPCC-8 ,SPCC-S
1/8硬质 8 HRB:50~71 HV:95~130
1/4硬质 4 HRB:65~80 HV:115~150
1/2硬度 2 HRB:74~89 HV:135~185
硬质 1 HRB≥85 HV:≥170
退火 S 85~110
化学成分比较
SPCC: C: ≤0.10 Si: ≤0.05 Mn: ≤0.50 P: ≤0.035 S: ≤0.025
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: ≤0.50 P: ≤0.45
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