191问答库 > E355+CR1 对应国内哪种牌号钢材？哪位大神来解答

E355+CR1 对应国内哪种牌号钢材？哪位大神来解答

2025-03-18 03:04:02
推荐回答（1个）
回答1：

欧标E355化学成份：
碳 C ：≤0.24
硅 Si：≤0.55
锰 Mn：1.00～1.60
硫 S ：≤0.045
磷 P ：≤0.045
钒 V ：0.02～0.15
力学性能：
抗拉强度 σb (MPa)：470～630
屈服强度 σs (MPa)：≤16时:≥345; ＞16～35时:≥325; ＞35～50时: ≥295; ＞50～100 时: ≥275
伸长率 δ5 (％)：≥21
对应的国标牌号为：Q345B
CR, cold rolled. 冷轧状态。后面的1不清楚什么意思。

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