A620 Type B

2023-05-17 18:03:19 来源：钢铁之家阅读量：0

牌号	A620 Type B
对应标准	ASTM A620/A620M-1997 冷轧碳素拉制钢板 Drawing Steel (DS), Sheet, Carbon, Cold-Rolled
归类	碳钢

A620 Type B 化学元素成分含量(%)

成分	C	Mn	P	S	Cr ^②③	Ni ^②	Cu ^②	Mo ^②	Ti ^④	V	Nb ^④	Al
最小值	0.02	-	-	-	-	-	-	-	-	-	-	0.01
最大值	0.08	0.5	0.02	0.03	0.15	0.2	0.2	0.06	0.008	0.008	0.008	-

① Specify Type B to avoid carbon levels below 0.02 %.
② The sum of copper, nickel, chromium, and molybdenum shall not exceed 0.50 % on heat analysis. When one or more of these elements is specified, the sum does not apply; in which case, only the individual limits on the remaining elements will apply.
③ Chromium is permitted at the producer option, to 0.25 % maximum when the carbon is less than or equal to 0.05 %. In such case, the limit on the sum of the four elements in Footnote ② does not apply.
④ For carbon levels less than or equal to 0.02 %, columbium and/or titanium may be used as chemical stabilizing elements at the producer option. When such is the case, the limits above do not apply to those elements. Rather, the limit on columbium shall be 0.10% maximum and the limit on titanium shall be 0.15% maximum.

碳当量计算

A620 Type B 机械性能

屈服点 σ_s Mpa	断后伸长率或延伸率 δ %
150~240	≥36

注：Yield strength and elongation are measured in the longitudinal direction in accordance with Specification A370.

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