AM2 - BS 3100-1991

牌号	AM2
對應标準	BS 3100-1991 一般工程用鑄鋼件 Specification for Steel castings for general engineering purposes
歸類	鑄鋼
标簽	高磁導率碳鋼鑄鋼

AM2 化學元素成分含量(%)

成分	C	Si	Mn	P	S	Cr ^②	Ni ^②	Cu ^②	Mo ^②	其他合計
最小值	-	-	-	-	-	-	-	-	-	-
最大值	0.25	0.6	0.5	0.05	0.05	0.3	0.4	0.3	0.15	0.8

其他單個或其他合計化學成分包括表中未指定值的化學成分。隻有在假定存在或在常規分析中，且有迹象表明其成分将超過規定值的情況下，才應進行分析。

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1.1%
②殘餘元素。

碳當量計算

AM2 機械性能

熱處理或狀态	抗拉強度 σ_b Mpa	屈服點 σ_s Mpa	斷後伸長率或延伸率 δ %
A或N	400~490	≥215	≥22

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.

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