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A2簡(jiǎn)介

牌號(hào) A2
對(duì)應(yīng)標(biāo)準(zhǔn) BS 3100-1991
一般工程用鑄鋼件
Specification for Steel castings for general engineering purposes
歸類 鑄鋼
標(biāo)簽 碳鋼鑄鋼
A2 化學(xué)元素成分含量(%)
成分 C Si Mn P S
最小值 - - - - -
最大值 0.35 0.6 1 0.05 0.05
①碳含量每降低0.01%，最大錳含量則增加0.04%，允許最大錳含量到1.1% 碳當(dāng)量計(jì)算
A2 機(jī)械性能
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
% 		沖擊吸收能量
KV2
J
A或N或N+T或OQ+T或WQ+T ≥490 ≥260 ≥18 ≥20
A=for anneal by heating to a temperature above the AC3 and cool in the furnace
N=for normalize by heating to a temperature above the AC3 and cool in still air
OQ=for quench into oil from a temperature above the AC3
WQ=for quench into water from a temperature above the AC3
AH=for air harden by heating to a temperature above the AC3 and cool in air at a rate fast enough to produce a hardened microstructure
T=for temper by heating to a temperature below AC1
ST=for solution treat by heating to temperature high enough to dissolve and any intermetallic phases followed by a rapid cool. ①表中值適用于鑄件截面厚度小于等于500mm，超過(guò)此尺寸的機(jī)械性能應(yīng)與制造商協(xié)商。
②如果買方要求對(duì)此牌號(hào)進(jìn)行沖擊試驗(yàn)，則不進(jìn)行彎曲試驗(yàn)
近似對(duì)照表 鑄鋼
中國(guó) 日本 美國(guó) 國(guó)際標(biāo)準(zhǔn)組織 德國(guó) 俄羅斯 英國(guó)
GB JIS UNS ISO DIN EN/DIN W-Nr. GOST BS EN/BS
ZG270-500 SC480 J04000 270-480 GS-60
GS-62 		1.0553
1.0555 		35Л A2
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