Q235A和45号钢怎么区分
来源:学生作业帮 编辑:搜搜考试网作业帮 分类:综合作业 时间:2024/07/10 13:58:45
Q235A和45号钢怎么区分
![Q235A和45号钢怎么区分](/uploads/image/z/14440934-38-4.jpg?t=Q235A%E5%92%8C45%E5%8F%B7%E9%92%A2%E6%80%8E%E4%B9%88%E5%8C%BA%E5%88%86)
是中国表示钢号的牌号,用得非常广泛的!
ABC主要是里面的化学元素有稍许差别,从而性能上也有所区别
Q235分A、B、C、D四级(GB700-88)
Q235A级含C0.14~0.22% Mn0.30~0.65Si≤0.30S≤0.050P≤0.045
Q235B级含C0.12~0.20% Mn0.30~0.670Si≤0.30S≤0.045P≤0.045
Q235C级含C≤0.18% Mn0.35~0.80Si≤0.30S≤0.040P≤0.040
Q235D级含C≤0.17% Mn0.35~0.80Si≤0.35S≤0.040P≤0.035
而45号钢是低碳钢,不属于合金钢
ABC主要是里面的化学元素有稍许差别,从而性能上也有所区别
Q235分A、B、C、D四级(GB700-88)
Q235A级含C0.14~0.22% Mn0.30~0.65Si≤0.30S≤0.050P≤0.045
Q235B级含C0.12~0.20% Mn0.30~0.670Si≤0.30S≤0.045P≤0.045
Q235C级含C≤0.18% Mn0.35~0.80Si≤0.30S≤0.040P≤0.040
Q235D级含C≤0.17% Mn0.35~0.80Si≤0.35S≤0.040P≤0.035
而45号钢是低碳钢,不属于合金钢