L72 - ASTM A 320-2000

AISI American Iron and Steel Institute	4137
ASTM Specification or Grade	L7B
Other Names
Corresponding Standard	ASTM A 320-2000 Standard Specification for Alloy-Steel and Stainless Steel Bolting Materials for Low-Temperature Service
Classification	Alloy Steel

Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Mo
Minimum Value	0.35	0.15	0.7	-	-	0.8	0.15
Maximum Value	0.4	0.35	0.9	0.035	0.04	1.1	0.25

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