A320 L7M - ASTM A320/A320M-2018

Grade	A320 L7M
Corresponding Standard	ASTM A320/A320M-2018 Alloy-Steel and Stainless Steel Bolting for Low-Temperature Service
Classification	Alloy Steel

A320 L7M Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Mo
Minimum Value	0.38	0.15	0.75	-	-	0.8	0.15
Maximum Value	0.48	0.35	1	0.035	0.04	1.1	0.25

Note: Except as specified, intentional addition of Bi, Se, Te, and Pb is not permitted.

A320 L7M Mechanical Properties

Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Hardness HBW
Quenching and tempering, minimum tempering temperature 620°C	≥690	≥550	≥18	≥50	≤235

A320L7M Corresponding Standards(Same grade name, different standards)

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!