A572 Grade 55 Gr55 - ASTM A572/A572M-2018

牌号	A572 Grade 55
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 55 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	0.25	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	0.25	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	0.25	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	0.25	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 55 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 %
≥485	≥380	(in 50mm) ≥20

接近匹配牌号结构钢板1-2（高强度低合金）

标准

牌号(等级/别名/符号)

化学成分，重量%，最大值，除非另有说明

C	Si	Mn	P	S	Cr	Ni	Mo	Cu	Ti	V

Q345A, L03451

0.2

0.5

1.7

0.035

0.3

0.5

0.1

0.3

0.2

0.15

Q345B, L03452

0.2

0.5

1.7

0.035

0.3

0.5

0.1

0.3

0.2

0.15

Q345C, L03453

0.2

0.5

1.7

0.03

0.3

0.5

0.1

0.3

0.2

0.15

ASTM A588/588M-2019

A588 Grade A

0.19

0.3-0.65

0.8-1.25

0.03

0.4-0.65

0.4

0.25-0.4

0.02-0.1

Q345D, L03454

0.18

0.5

1.7

0.03

0.025

0.3

0.5

0.1

0.3

0.2

0.15

Q345E, L03455

0.18

0.5

1.7

0.025

0.02

0.3

0.5

0.1

0.3

0.2

0.15

ASTM A242/A242M-2013

A242 Type 1

0.15

0.05

≤0.2

350WT

0.22

0.15-0.4

0.5-1.5

0.03

0.04

380W

0.23

0.4

0.5-1.5

0.04

0.05

HSLAS Grade 55 [380] Class 1

0.25

1.35

0.04

0.15

0.2

0.06

0.2

≤0.005

HSLAS Grade 60 [410] Class 2

0.15

1.5

0.04

0.15

0.2

0.06

0.2

≤0.005

ASTM A1011/A1011M-2018(a)

HSLAS Grade 55 [380] Class 1

0.25

1.35

0.04

0.15

0.2

0.06

0.2

≤0.005

ASTM A1011/A1011M-2018(a)

HSLAS Grade 60 [410] Class 2

0.15

1.5

0.04

0.15

0.2

0.06

0.2

≤0.005

ASTM A588/588M-2019

A588 Grade B

0.2

0.15-0.5

0.75-1.35

0.03

0.4-0.7

0.5

0.2-0.4

0.01-0.1

ASTM A588/588M-2019

A588 Grade K

0.17

0.25-0.5

0.5-1.2

0.03

0.4-0.7

0.4

0.1

0.3-0.5

ASTM A633/633M-2018

A633 Grade C

0.2

0.15-0.5

1.15-1.5

0.03

ASTM A633/633M-2018

A633 Grade D

0.2

0.15-0.5

0.7-1.35

0.03

0.25

0.08

0.35

SA572 Grade 55[380] Type1

0.25

0.15-0.4

1.35

0.03

0.2

SA572 Grade 55[380] Type2

0.25

0.15-0.4

1.35

0.03

0.2

0.01-0.15

SA572 Grade 55[380] Type3

0.25

0.15-0.4

1.35

0.03

0.2

0.01-0.15

SA572 Grade 55[380] Type5

0.25

0.15-0.4

1.35

0.03

0.2

0.006-0.04

0.06

ASTM A572/A572M-2018

A572 Grade 55, Gr55

0.25

0.15-0.4

1.35

0.03

0.2

0.006-0.04

0.06

ASTM A656/A656-2024

A656 Grade 60[415] Type 3

0.18

0.6

1.65

0.025

0.03

0.08

ASTM A656/A656-2024

A656 Grade 60[415] Type 7

0.18

0.6

1.65

0.025

0.03

0.15

ASTM A656/A656-2024

A656 Grade 60[415] Type 8

0.18

0.6

1.65

0.025

0.03

0.15

注：数据仅供参考！如有疑问，请填写"我要纠错"！