20mnv6 Hollow Bar

20MnV6 is a carbon-manganese steel micro alloyed with vanadium, generally supplied in the black hot rolled condition with a typical tensile strength range of 600 - 790 Mpa and a high typical yield strength range of 440 - 570 Mpa.Characterized by excellent machinability due to silicon - calcium treatment and precise control of the sulphur content, excellent weldability with high yield and tensile strengths due to the micro - alloying effect of the vanadium.The low carbon content and the vanadium addition allows surface hardening by carburising, carbonitriding or nitriding. It will also respond to high or medium frequency induction hardening and can be through hardened and tempered producing a moderate improvement in tensile and yield strength, this varying depending upon wall thickness.20MnV6 hollow bar is used extensively by all industry sectors for a wide range of applications utilizing it's considerable saving on machining time and weight over solid bar.

Typical applications are: Bushes, Cylinders Various, Conveyor Rolls, Hollow Shafts, Hollow Parts and components, Nuts, Rings, etc.

The black hot rolled surface on 20MnV6 Hollow Bar will first require to be machined sufficiently to remove any de-
carburised layer otherwise less than satisfactory results will likely be obtained. The feed material can be either in the as
supplied condition or pre hardened and tempered for higher core strength.
Heat to the austenitic temperature range (870 °C - 925 °C), and required case depth, quench immediately in oil or water
as required. Typical case hardness achieved up to RC 48.
Tempering immediately at 150 °C - 200 °C will reduce stress and improve the toughness of the case.
 

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some 20mnv6 4140 tube from our factory

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