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AL3簡(jiǎn)介

牌號(hào) AL3
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 低溫用碳鋼鑄鋼
AL3 化學(xué)元素成分含量(%)
成分 C Si Mn P S Cr ② Ni ② Cu ② Mo ② 其他合計(jì)
最小值 - - - - - - - - - -
最大值 0.25 0.6 1.2 0.04 0.04 0.3 0.4 0.3 0.15 0.8
其他單個(gè)或其他合計(jì)化學(xué)成分包括表中未指定值的化學(xué)成分。只有在假定存在或在常規(guī)分析中，且有跡象表明其成分將超過(guò)規(guī)定值的情況下，才應(yīng)進(jìn)行分析。 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1.4%
②殘余元素。 碳當(dāng)量計(jì)算
AL3 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
N或N+T或OQ+T或WQ+T 485~655 ≥275 ≥22 -46°C
≥27
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. 僅適用于小截面鑄件。
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