GB/T 3077 20Ni4Mo round bars

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11-May-2024

GB/T 3077 20Ni4Mo is a chinese grade of high hardenability and high strength cementation steel . Because of its high strength (above 1500 MPa) and high hardness (60-63 HRC), 20Ni4Mo round bars can be used for indented chisel and heavy vehicles gear.

20Ni4Mo alloy steel can be produced into hot rolled round bars and square bars, cold-drawing bars,forged bars. We henan KUNFENG can supply 20Ni4Mo all of shapes.

chemical composition by %,maximum

Grade	C	Si	Mn	Ni	Mo	P	S
GB/T 3077 20Ni4Mo	0.18-0.32	0.2-0.35	0.5-0.7	3.25-3.75	0.2-0.3	0.025	0.025

GB/T 3077 20Ni4Mo round bars mechanical properties

Grade	Delivery State	T.S. N/mm2 Min	Y.S. N/mm2 Min	A,% Min	Z,% Min	Hardness, (annealing or tempering) HB,max	Forging ratio	Grain Size (level)	Nonmetal ratio
GB/T 3077 12CrNi2	Hot rolled, forged, or heat treatment	1100	850	10	40	269	≥ 4:1	≥ 6	≤ 2.0

Besides 20Ni4Mo,20Ni4MoMoV,20Ni4MoMo1V1,5CrNiMo,CrWMn,9SiCr,9Mn2V, are also the mainly grades for high hardenability and high strength cementation steel . If you need 20Ni4Mo steel round bar, or other grades,pls be free to contact us.