40CrMnMo 7 1.2311

40CrMnMo 7 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Mo
Minimum Value	0.35	0.2	1.3	-	-	1.8	0.15
Maximum Value	0.45	0.4	1.6	0.035	0.035	2.1	0.25

40CrMnMo 7 Mechanical Properties

Heat Treatment or Condition	Hardness HBW
Softening Annealing	≤230

1 Approximate Comparison Table Plastic Mold Steel

China			United States	International Organization for Standardization	Germany
YB	GB	ISC	ASTM/AISI	ISO	DIN EN/DIN	W-Nr.
SM3Cr2Mo	3Cr2Mo	T25303	P20	35CrMo2	40CrMnMo 7	1.2311

2 Approximate Comparison Table Alloy Tool Steel 2

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