20MnNb6 seamless pipe application

20MnNb6 seamless pipe is low carbon carburized steel with higher manganese content. 20MnNb6 with specific high temperature properties, with good plasticity, toughness, cold bending properties and welding performance.

The plasticity, machinability and hardenability are slightly higher and the formation of carburizing and quenching Soft spots less, should be carried out carburizing.

Equivalent Material:

20MnNbb under GB/T standard

Delivery Conditions:

Normalizing; Normalizing+Tempering, Quenching+Tempering

Chemical composition and mechanical properties

C% max	Si% max	Mn% max	P% max	S% max	Al% max		Cu% max		Nb % max
0.22	0.15-0.35	1.00-1.50	0.025	0.02	0.06		0.3		0.015-0.10
T.S.min Mpa	Y.S. Wall thickness min Mpa			Elongation A min %		Minimum average absorbed energy KV J at a temperature of ℃
500-650	t≤16	16＜t≤40	40＜t≤60	l	t	l					t
	355	345	335	22	20	20		0		-10	20	0
						一		40		一	一	27

Carbonitriding treatment, the surface wear and the heart of the toughness of a comprehensive performance. Good toughness after hot rolling or normalizing.

Application:

20MnNb6 is steel pipe for pressure purposes, 20MnNb6 is alloy special steel and applied for manufacturing pipeline, vessel, equipment, pipe fittings and steel structure.

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