Patent ID: 9273383
Filing Date: 2016-03-01
CPC Classification: C22C

Claim Text:
1. A light alloy steel, comprising, by weight: C: 0.3% to 0.5%; Si: 0.1% to 1%; Mn: 1% or less; P: 0.03% or less; S: 0.005% or less; Cr: 0.3% to 1%; Mo: 1.29% to 2%; W: 0.52% to 1%; V: 0.03% to 0.25%; Nb: 0.01% to 0.15%; Al: 0.01% to 0.1%; and Fe; wherein a microstructure of the light alloy steel consists of a martensitic structure, and Ti is not deliberately added and is an impurity obtained from the steel production such that the content of Ti is less than 0.005%.