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A572 Grade 50簡(jiǎn)介

牌號(hào) A572 Grade 50
其他名稱(chēng)
對(duì)應(yīng)標(biāo)準(zhǔn) ASTM A572/A572M-2018
高強(qiáng)度低合金鈷釩結(jié)構(gòu)鋼技術(shù)規(guī)范
Standard Specification for High-Strength Low-Alloy Columbium-Vanadium Structural Steel
歸類(lèi) 合金鋼
性能 強(qiáng)度
A572 Grade 50 化學(xué)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錳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銅Cu：When specified; Product analysis: 0.18% min
⑤釩V：Product analysis: 0.005 - 0.17%
⑥鈮Nb：Product analysis: 0.004 - 0.06%
⑦釩V+鈮Nb：Product analysis: 0.01 - 0.16% 碳當(dāng)量計(jì)算
A572 Grade 50 機(jī)械性能
抗拉強(qiáng)度
σb
Mpa 		屈服點(diǎn)
σs
Mpa 		斷后伸長(zhǎng)率或延伸率
δ
%
≥450 ≥345 ≥18
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