40CrMnNiMo8-6-4 1.2738 - DIN EN ISO 4957-2018

Grade	40CrMnNiMo8-6-4
Germany W-Nr.	1.2738
Corresponding Standard	DIN EN ISO 4957-2018 Tool steels
Classification	Alloy Steel
Density	7.85 g/cm³

40CrMnNiMo8-6-4 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni ^*	Mo
Minimum Value	0.35	0.2	1.3	-	-	1.8	0.9	0.15
Maximum Value	0.45	0.4	1.6	0.03	0.03	2.1	1.2	0.25

• Elements not quoted in this table shall not be intentionally added to the steel without the agreement of the purchaser, other than for the purpose of finishing the heat . All reasonable precautions shall be taken to prevent the addition from scrap or other material used in the manufacture, of such elements which affect the hardenability, mechanical properties and applicability.

40CrMnNiMo8-6-4 Mechanical Properties

Hardness HBW
300

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.
SM3Cr2MnNiMo	3Cr2MnNiMo	T25553	P20Ni	40CrMnNiMo 8-6-4	40CrMnNiMo 8-6-4	1.2738

2 Approximate Comparison Table Alloy Cold-Work Tool Steel

International Organization for Standardization	Germany		European Standard
ISO	DIN EN/DIN	W-Nr.	EN	Numerical Grade
40CrMnNiMo8-6-4	40CrMnNiMo8-6-4	1.2738	40CrMnNiMo8-6-4	1.2738

40CrMnNiMo8-6-4 Corresponding Standards(Same grade name, different standards)

1	DIN EN ISO 4957-2018
	40CrMnNiMo8-6-4 1.2738
2	ISO 4957-2018
	40CrMnNiMo8-6-4 1.2738

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