35CrMnSiA - GJB 1220A-2008

Grade	35CrMnSiA
Corresponding Standard	GJB 1220A-2008 Speification for alloy structure steel bar for artillery parts
Classification	Alloy Steel

35CrMnSiA Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu
Minimum Value	0.32	1.1	0.8	-	-	1.1	-	-
Maximum Value	0.39	1.4	1.1	0.025	0.025	1.4	0.3	0.25

35CrMnSiA Mechanical Properties

diameter d mm	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	Impact Energy Absorption KV2 J
sample	Heat treatment 1: Heat to 880°C, 280~310°C isothermal quenching Heat treatment 2: 950°C first quenching, 890°C second quenching, oil cooling, 230°C tempering, air or oil cooling	≥1620	≥1325	≥9	≥40	-	KU2 ≥39
Steel	Annealing or Tempering	-	-	-	-	≤241	-

35CrMnSiA Corresponding Standards(Same grade name, different standards)

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