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A871 Grade 65簡(jiǎn)介

牌號(hào) A871 Grade 65
對(duì)應(yīng)標(biāo)準(zhǔn) ASTM A871/A871M-2014
耐大氣腐蝕的高強(qiáng)度低合金結(jié)構(gòu)鋼板
High-Strength Low-Alloy Structural Steel Plate With Atmospheric Corrosion Resistance
歸類 合金鋼
A871 Grade 65 化學(xué)元素成分含量(%)
成分 C Si Mn P S Cr Ni Cu V
Type Ⅰ 最小值 - 0.3 0.8 - - 0.4 - 0.25 0.02
最大值 0.19 0.65 1.35 0.03 0.03 0.7 0.4 0.4 0.1
成分 C Si Mn P S Cr Ni Cu V
Type Ⅱ 最小值 - 0.15 0.75 - - 0.4 - 0.2 0.01
最大值 0.2 0.5 1.35 0.03 0.03 0.7 0.5 0.4 0.1
成分 C Si Mn P S Cr Ni Cu Mo Nb
Type Ⅳ 最小值 - 0.25 0.5 - - 0.4 - 0.3 - 0.005
最大值 0.17 0.5 1.2 0.03 0.03 0.7 0.4 0.5 0.1 0.05
① For each reduction of 0.01 percentage point below the specified maximum for carbon, an increase of 0.06 percentage point above the specified maximum for manganese is permitted, up to a maximum of 1.50 %.
② For plates under 1/2 in. (13 mm) in thickness, the minimum columbium is waived. 碳當(dāng)量計(jì)算
A871 Grade 65 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
%
≥550 ≥450 (50mm)
≥17
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