- SAE J1868-2010

SAE Steel Number	50B40RH
Corresponding Standard	SAE J1868-2010 Restricted Hardenability Bands for Selected Alloy Steels
Classification	Alloy Steel

Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	B
Minimum Value	0.38	0.15	0.75	-	-	0.4	-	-	-	0.0005
Maximum Value	0.43	0.35	1	0.025	0.04	0.6	0.25	0.35	0.06	0.003

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