A572 Grade 42_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

A572 Grade 42简介

牌号	A572 Grade 42
其他名称
对应标准	ASTM A572/A572M-2018 高强度低合金钴钒结构钢技术规范 Standard Specification for High-Strength Low-Alloy Columbium-Vanadium Structural Steel
归类	合金钢
性能	强度

A572 Grade 42 化学元素成分含量(%)

	成分	C ^③	Si ^①	Mn ^{② ③}	P ^④	S ^④	Cu	Nb ^⑤	更多
Type 1	最小值	-	0.15	-	-	-	-	0.005	/
Type 1	最大值	0.21	0.4	1.35	0.03	0.03	0.2	0.05	/

	成分	C ^③	Si ^①	Mn ^{② ③}	P	S	Cu	V ^⑥	更多
Type 2	最小值	-	0.15	-	-	-	-	0.01	/
Type 2	最大值	0.21	0.4	1.35	0.03	0.03	0.2	0.15	/

	成分	C ^③	Si ^①	Mn ^{② ③}	P	S	Cu	V ^⑥	Nb ^⑤	更多
Type 3	最小值	-	0.15	-	-	-	-	0.01	0.005	V+Nb：0.02~0.15⑦
Type 3	最大值	0.21	0.4	1.35	0.03	0.03	0.2	0.15	0.05	V+Nb：0.02~0.15⑦

	成分	C ^③	Si ^①	Mn ^{② ③}	P	S	Cu	N	Ti	V	更多
Type 5	最小值	-	0.15	-	-	-	-	0.003	0.006	-	/
Type 5	最大值	0.21	0.4	1.35	0.03	0.03	0.2	0.015	0.04	0.06	/

① Plates to 1-1/2 in. [40 mm] Thick, Shapes with Flange or Leg Thickness to 3 in. [75 mm] inclusive, Sheet Piling, Bars, Zees, and Rolled Tees: Si≤0.40% .
Plates Over 1-1/2 in. [40 mm] Thick and Shapes with Flange Thickness Over 3 in. [75 mm]：Si 0.15~0.40%.
② Manganese, minimum, by heat analysis of 0.80 % (0.75 % by product analysis) shall be required for all plates over 3/8 in. [10 mm] in thickness; a minimum of 0.50 % (0.45 % by product analysis) shall be required for plates 3/8 in. [10 mm] and less in thickness, and for all other products. The manganese to carbon ratio shall not be less than 2 to 1.
③ For each reduction of 0.01 percentage point below the specified carbon maximum, an increase of 0.06 percentage point manganese above the specified maximum is permitted. up to a maximum of 1.60 %.
④ maximum phosphorus content of 0.04 % and a maximum sulfur content of 0.05 % are permitted for the following materials： Structural shapes， Sheet piling， Bars， Plates with widlhs up to and including 15 in. [380 mm].
⑤ Nb：Product analysis limits = 0.004~0.06 %.
⑥ V：Product analysis limits = 0.005~0.17%
⑦ Nb+V：Product analysis limits = 0.01~0.16%. 碳当量计算

A572 Grade 42 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 %
≥415	≥290	(in 50mm) ≥24

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