BW2 - BS 3100-1991

牌号	BW2
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	耐磨合金鑄鋼

BW2 化學元素成分含量(%)

成分	C	Si	Mn	P	S	Cr	Mo
最小值	0.45	-	0.5	-	-	0.8	-
最大值	0.6	0.75	1	0.04	0.04	1.5	0.4

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%

碳當量計算

BW2 機械性能

熱處理或狀态	硬度 HBW
A或AH+T或OQ+T或WQ+T	201~255

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.

表中值不适用于退火狀态鑄件

近似對照表碳素工具鋼

日本	美國	法國	英國
JIS	AISI	NF EN/NF	BS EN/BS
SKS43	W2	Y1 105V	BW2

BW2 對應不同标準

1	BS 3100-1991 一般工程用鑄鋼件
	BW2
2	BS 4659-1989 工模具鋼
	BW2

注：數據僅供參考！如有疑問，請填寫"我要糾錯"！