BH21 - BS 4659-1989

Grade	BH21
Corresponding Standard	BS 4659-1989 Specification for Tool and die steels
Classification	Tool Steel

BH21 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	W	V	Sn
Minimum Value	0.25	-	-	-	-	2.25	-	-	-	8.5	-	-
Maximum Value	0.35	0.4	0.4	0.035	0.035	3.25	0.4	0.2	0.6	10	0.4	0.05

BH21 Mechanical Properties

Heat Treatment or Condition	Hardness HBW
Annealing	≤235

1 Approximate Comparison Table Hot-work tool steels

China	Japan	United States	International Organization for Standardization	Germany	France	European Standard		Russia	United Kingdom
GB	JIS	ASTM	ISO	DIN EN/DIN	NF EN/NF	EN	Numerical Grade	GOST	BS EN/BS
3Cr2W8V	SKD5	H21	X30WCrV9-3	X30WCrV9-3	Z30WCV9	X30WCrV9-3	1.2581	3KH2V8F	BH21

2 Approximate Comparison Table alloy tool stee

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