70Mn4 1.1244 - DIN EN ISO 683-17-2015

Grade	70Mn4
Germany W-Nr.	1.1244
Corresponding Standard	DIN EN ISO 683-17-2015 Heat-Treated Steels, Alloy Steels and Free-Cutting Steels - Part 17: Ball and Roller Bearing Steels
Classification	Alloy Steel
Properties	Quench Hardness

70Mn4 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S ^①	Cu	Al	O
Minimum Value	0.65	-	0.8	-	-	-	-	-
Maximum Value	0.75	0.4	1.1	0.025	0.015	0.3	0.05	0.002

70Mn4 Mechanical Properties

condition	Heat Treatment or Condition	Hardness HBW
Steel billet, bar stock, coil bar	Cold Shearing Treatment (+S)	≤255
Bars, coiled bars	Softening Annealing (+A)	≤241

70Mn4 Corresponding Standards(Same grade name, different standards)

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