40CrMnSiMoVA - YB 1211-1983

Grade	40CrMnSiMoVA
Corresponding Standard	YB 1211-1983 Technical Conditions for 40CrMnSiMoVA Steel Round Tube Billets for Aviation
Classification	Alloy Steel

40CrMnSiMoVA Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Mo	V
Minimum Value	0.36	1.2	0.8	-	-	1.2	0.45	0.07
Maximum Value	0.42	1.6	1.2	0.025	0.025	1.5	0.6	0.12

40CrMnSiMoVA Mechanical Properties

condition	Mark	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Impact Energy Absorption KV2 J
Sample (Longitudinal)	Ⅰ	910~930°C Hold, Oil Quenching, 200~300°C Tempering, Air Cooling	≥190	≥8	≥35	≥5
Sample (Transverse)	Ⅱ	10~930°C Holding, then quenching into 180~230°C Nitrate salt bath for 1h, air cooling, 200~300°C Tempering, air cooling	≥180	≥8	≥35	≥6

40CrMnSiMoVA Corresponding Standards(Same grade name, different standards)

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