G20CrNiMoA - GB /T 3203-2016 - H2ABC

中文版

Grade	G20CrNiMoA
Corresponding Standard	GB /T 3203-2016 Carburizing Steels for Bearing
Classification	Bearing Steel
Properties	High Strength High Hardness Impact Resistance Fatigue Resistance

G20CrNiMoA Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	Ti	Al	H	Ca
Minimum Value	0.17	0.15	0.6	-	-	0.35	0.4	-	0.15	-	-	-	-
Maximum Value	0.23	0.4	0.9	0.02	0.015	0.65	0.7	0.25	0.3	0.005	0.05	0.0002	0.001

G20CrNiMoA Mechanical Properties

diameter d mm	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Hardness HBW	Impact Energy Absorption KV2 J
d=15*	Double Quenching + Oil Cooling, Tempering + Air Cooling	≥1180	≥9	≥45	-	≥63
Delivery Condition**	WHR+SA/WHF/WHF+SA/WCD/SF or SP	-	-	-	≤229	-

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