38CrMoAlA - GJB 1220A-2008

Grade	38CrMoAlA
Corresponding Standard	GJB 1220A-2008 Speification for alloy structure steel bar for artillery parts
Classification	Alloy Steel

38CrMoAlA Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	Al
Minimum Value	0.35	0.17	0.3	-	-	1.35	-	-	0.15	0.7
Maximum Value	0.42	0.37	0.6	0.025	0.025	1.65	0.3	0.25	0.25	1.1

38CrMoAlA 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
d=30	940°C Quenching, Water or Oil Cooling, 640°C Tempering, Water or Oil Cooling	≥980	≥835	≥14	≥50	-	KU2 ≥71
Steel	Annealing or Tempering	-	-	-	-	≤229	-

38CrMoAlA Corresponding Standards(Same grade name, different standards)

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