What is OHNS Material and can anybody explain the Chemical
& Physical Properties of Same. Which Technical Standard
Book shows this Specification. Why can't we use En series
instead of OHNS. Where it is specifically Used.

Answer Posted / k.s. mahal

OHNS it is an oil hardening non sticking steel,

chemical composition
carbon- 0.9 -1.3%
chromium- .5%
tungsten- 0.4-0.8%
rest is iron

it has good cutting performance

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