Q275，是一种碳素结构钢Q275分A、B、C、D四级(GB700-88) Q275A级含C0.14~0.22% Mn0.30~0.65Si≤0.30S≤0.050P≤0.045 Q275B级含C0.12~0.20% Mn0.30~0.670Si≤0.30S≤0.045P≤0.045 Q275C级含C≤0.18% Mn0.35~0.80Si≤0.30S≤0.040P≤0.040 Q275D级含C≤0.17% Mn0.35~0.80Si≤0.35S≤0.040P≤0.035
匿名回答于2024-05-23 08:20:52
