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牌号 A572 Grade 50
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 50 化学元素成分含量(%)
  成分 C Si Mn P S Cu Nb 更多
Type 1 最小值 - 0.15 - - - - 0.005 /
最大值 0.23 0.4 1.35 0.03 0.03 0.2 0.05
  成分 C Si Mn P S Cu V 更多
Type 2 最小值 - 0.15 - - - - 0.01 /
最大值 0.23 0.4 1.35 0.03 0.03 0.2 0.15
  成分 C Si Mn P S Cu V Nb 更多
Type 3 最小值 - 0.15 - - - - 0.01 0.005 V+Nb:0.02~0.15
最大值 0.23 0.4 1.35 0.03 0.03 0.2 0.15 0.05
  成分 C Si Mn P S Cu N Ti V 更多
Type 5 最小值 - 0.15 - - - - 0.003 0.006 - /
最大值 0.23 0.4 1.35 0.03 0.03 0.2 0.015 0.04 0.06
①For each reduction of 0.01% below the specified C maximum, an increase of 0.06% Mn above the specified maximum is permitted, up to a maximum of 1.60%
②锰Mn：0.75% min by product analysis shall be required for all plates t > 10 mm; ≥ 0.50% (≥ 0.45% by product analysis) shall be required for plates t ≤ 10 mm, and for all other products. The Mn to C ratio shall not be less than 2 to 1
③硅Si：For plates t > 40 mm and shapes with flange t > 75 mm; Si ≤ 0.40% for plates t < 40 mm and shapes with flange or leg t ≤ 75 mm
④铜Cu：When specified; Product analysis: 0.18% min
⑤钒V：Product analysis: 0.005 - 0.17%
⑥铌Nb：Product analysis: 0.004 - 0.06%
⑦钒V+铌Nb：Product analysis: 0.01 - 0.16%
碳当量计算
A572 Grade 50 机械性能
抗拉强度
σb
Mpa 		屈服点
σs
Mpa 		断后伸长率或延伸率
δ
%
≥450 ≥345 ≥18
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
热处理
1 GB /T 1591-1994 Q295A
0.160.550.8-1.50.0450.0450.30.3-0.30.02-0.20.02-0.15
 -
2 GB /T 1591-1994 Q295B
0.160.550.8-1.50.040.040.30.3-0.30.02-0.20.02-0.15
 -
3 CSA G40.21-2013 260W
0.20.40.5-1.50.040.05------
 -
4 CSA G40.21-2013 260WT
0.20.15-0.40.8-1.50.030.04------
 -
5 ASME SA-1011/SA-1011M-2023 HSLAS Grade 45 [310] Class 1
0.22-1.350.040.040.150.20.060.2≤0.005≤0.005
 -
6 ASTM A1011/A1011M-2018(a) HSLAS Grade 45 [310] Class 1
0.22-1.350.040.040.150.20.060.2≤0.005≤0.005
 -
7 ASME SA-1011/SA-1011M-2023 HSLAS Grade 50 [340] Class 2
0.15-1.350.040.040.150.20.060.2≤0.005≤0.005
 -
8 ASTM A1011/A1011M-2018(a) HSLAS Grade 50 [340] Class 2
0.15-1.350.040.040.150.20.060.2≤0.005≤0.005
 -
9 ASME SA-572/SA-572M-2023 SA572 Grade 42[290] Type1
0.210.15-0.41.350.030.03---0.2--
 -
10 ASME SA-572/SA-572M-2023 SA572 Grade 42[290] Type2
0.210.15-0.41.350.030.03---0.2-0.01-0.15
 -
11 ASME SA-572/SA-572M-2023 SA572 Grade 42[290] Type3
0.210.15-0.41.350.030.03---0.2-0.01-0.15
 -
12 ASME SA-572/SA-572M-2023 SA572 Grade 42[290] Type5
0.210.15-0.41.350.030.03---0.20.006-0.040.06
 -
13 ASTM A572/A572M-2018 A572 Grade 42, Gr42
0.210.15-0.41.350.030.03---0.20.006-0.040.06
 -
14 ASTM A656/A656-2024 A656 Grade 50[345] Type 3
0.180.61.650.0250.03-----0.08
 -
15 ASTM A656/A656-2024 A656 Grade 50[345] Type 7
0.180.61.650.0250.03-----0.15
 -
16 ASTM A656/A656-2024 A656 Grade 50[345] Type 8
0.180.61.650.0250.03----0.150.15
 -
17 ASTM A633/633M-2018 A633 Grade A
0.180.15-0.51-1.350.030.03------
 -
18 CSA G40.21-2013 300W
0.260.40.3-1.20.040.05------
 -
19 CSA G40.21-2013 300WT
0.220.15-0.40.8-1.50.030.04------
 -
20 ASME SA-1011/SA-1011M-2023 HSLAS Grade 50 [340] Class 1
0.23-1.350.040.040.150.20.060.2≤0.005≤0.005
 -
21 ASTM A1011/A1011M-2018(a) HSLAS Grade 50 [340] Class 1
0.23-1.350.040.040.150.20.060.2≤0.005≤0.005
 -
22 ASME SA-572/SA-572M-2023 SA572 Grade 50[345] Type1
0.230.15-0.41.350.030.03---0.2--
 -
23 ASME SA-572/SA-572M-2023 SA572 Grade 50[345] Type2
0.230.15-0.41.350.030.03---0.2-0.01-0.15
 -
24 ASME SA-572/SA-572M-2023 SA572 Grade 50[345] Type3
0.230.15-0.41.350.030.03---0.2-0.01-0.15
 -
25 ASME SA-572/SA-572M-2023 SA572 Grade 50[345] Type5
0.230.15-0.41.350.030.03---0.20.006-0.040.06
 -
26 ASTM A572/A572M-2018 A572 Grade 50, A572 Gr50
0.230.15-0.41.350.030.03---0.20.006-0.040.06
 -
27 ASTM A709/A709M-2017 A709 Grade 50
0.230.41.350.030.03---0.2--
 -
28 CSA G40.21-2013 350W
0.230.40.5-1.50.040.05------
 -
29 ASME SA-1011/SA-1011M-2023 HSLAS Grade 55 [380] Class 2
0.15-1.350.040.040.150.20.060.2≤0.005≤0.005
 -
30 ASTM A1011/A1011M-2018(a) HSLAS Grade 55 [380] Class 2
0.15-1.350.040.040.150.20.060.2≤0.005≤0.005
 -
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