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A514 Grade A簡(jiǎn)介

牌號(hào) A514 Grade A
對(duì)應(yīng)標(biāo)準(zhǔn) ASTM A514/A514M-2018
焊接用經(jīng)回火與淬火的高屈服強(qiáng)度合金鋼板
Standard Specification for High-Yield-Strength, Quenched and Tempered Alloy Steel Plate, Suitable for Welding
歸類 合金鋼
性能 強(qiáng)度
A514 Grade A 化學(xué)元素成分含量(%)
成分 C Si Mn P S Cr Mo Ti ① Zr ② B
板厚t≤32mm(1.25in.) 最小值 0.15 0.4 0.8 - - 0.5 0.18 - 0.05 -
最大值 0.21 0.8 1.1 0.03 0.03 0.8 0.28 0.06 0.15 0.0025
① Ti may be present to protect the boron additions.
② Zr may be replaced by cerium. When cerium is added, the cerium/sulfur ratio should be 1.5 to 1 based upon heat analysis. 碳當(dāng)量計(jì)算
A514 Grade A 機(jī)械性能
條件 熱處理或狀態(tài)
抗拉強(qiáng)度
σb
Mpa 		屈服點(diǎn)
σs
Mpa 		斷后伸長(zhǎng)率或延伸率
δ
% 		斷面收縮率
ψ
% 		硬度
HBW
板材;t≤20 淬火和回火 760~895 ≥690 ≥18 ≥40 235~293
板材;20 淬火和回火 760~895 ≥690 ≥18 ≥40
板材;65 淬火和回火 690~895 ≥620 ≥16 ≥50
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