A841 Grades A Class 2_全球钢材百科网钢材化学成分-热处理-物理性能介绍-全球钢材百科网

A841 Grades A Class 2简介

牌号	A841 Grades A Class 2
对应标准	ASTM A841/A841M-2017 通过热机械控制工艺生产的压力容器用钢板 Steel Plates for Pressure Vessels, Produced by ThermoMechanical Control Process (TMCP)
归类	合金钢

A841 Grades A Class 2 化学元素成分含量(%)

	成分	C	Si	Mn ^①	P	S	Cr	Ni	Cu	Mo	V	Nb	Al ^②	更多
t≤40mm	最小值	-	0.15	0.7	-	-	-	-	-	-	-	-	0.02	Alt≥0.02或Als≥0.015
t≤40mm	最大值	0.2	0.5	1.35	0.03	0.03	0.25	0.25	0.35	0.08	0.06	0.03	-	Alt≥0.02或Als≥0.015

	成分	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	V	Nb	Al ^②	更多
t＞40mm	最小值	-	0.15	1	-	-	-	-	-	-	-	-	0.02	Alt≥0.02或Als≥0.015
t＞40mm	最大值	0.2	0.5	1.6	0.03	0.03	0.25	0.25	0.35	0.08	0.06	0.03	-	Alt≥0.02或Als≥0.015

① Manganese may exceed 1.35 % on heat analysis, up to a maximum of 1.60 %, provided that the carbon equivalent on heat analysis does not exceed 0.47 %, or the value specified in Supplementary Requirement S77 when that requirement is invoked, when based on the following formula：
CE = C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15%
When this option is exercised, the manganese content on product analysis shall not exceed the heat analysis content by more than 0.12 percentage points.
② By agreement, the steel may be produced with titanium, in which case the minimum aluminum content shall not apply. When this option is exercised, the titanium content, by heat analysis, shall be .006 % to 0.02 %, and the actual titanium content shall be reported on the test report. 碳当量计算

A841 Grades A Class 2 机械性能

	抗拉强度 σ_b Mpa	屈服点 σ_s Mpa	断后伸长率或延伸率 δ %
t≤65	550~690	≥415	(50mm) ≥22
t＞65	515~655	≥380	≥22

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