G20CrMo - GB /T 3203-2016

Grade	G20CrMo
Corresponding Standard	GB /T 3203-2016 Carburizing Steels for Bearing
Classification	Bearing Steel
Properties	Strength Hardness Impact Toughness Fatigue Resistance

G20CrMo Chemical Element Composition Content (%)

Component	C	Si	Mn	P ^①	S ^①	Cr	Ni	Cu	Mo	Ti ^①	Al ^①	H ^①	Ca ^①
Minimum Value	0.17	0.2	0.65	-	-	0.35	-	-	0.08	-	-	-	-
Maximum Value	0.23	0.35	0.95	0.02	0.015	0.65	0.3	0.25	0.15	0.005	0.05	0.0002	0.001

G20CrMo 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	≥880	≥12	≥45		≥63
Delivery Condition**	WHR+SA/WHF/WHF+SA/WCD/SF or SP				≤229

Approximate Comparison Table Case-Carburized Bearing Steel

China		United States	International Organization for Standardization	Germany		European Standard
GB	ISC	ASTM/AISI	ISO	DIN EN/DIN	W-Nr.	EN	Numerical Grade
G20CrMo	B10200	A534 4118H	≈20MnCrMo4-2 (B27) 20MoCr4	20MoCr4	1.7321	20MoCr4	1.7321

G20CrMo 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"!