GB/T 3077 20MnV round bars

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11-May-2024

20MnV alloy structural steel under GB/T 3077 chinese standard, can be produced into hot rolled round bars and square bars, cold-drawing bars,forged bars. We henan KUNFENG can supply GB/T 3077 20MnV all of shapes.

GB/T 3077 20MnV round bar

are widely used for making machine parts and various kinds of components of the project. In the industrial field, 20MnV alloy structural round bars is famous and widely applied for the cheap price.

According to the market needs, henan KUNFENG supply the oversea markets for GB/T 3077 20MnV hot rolled round bars OD 6mm -80 mm and 20MnV forged round bars OD 80 mm - 1200 mm, also GB/T 3077 20MnV forged square bars OD 100- 1200 mm. The OD tolerance is about 0-3mm and length tolerance is about 0-20 mm.

are usually produced under the followed procedures: EAF arc furnace + LF purify affinage + VDF + ingot steel(bottom gating /argon) + forged + annealing + black polishing (turnery) + GB/T6402-92 ΙΙ UT test + smooth edges with sawing .

chemical composition by %,maximum:

Grade	C	Si	Mn	V	P	S
GB/T 3077 20MnV	0.17-0.24	0.17-0.37	1.3-1.6	0.07-0.12	≤0.035	≤0.035

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 20MnV	Hot rolled, forged, or heat treatment	785	590	10	40	187	≥ 4:1	≥ 6	≤ 2.0