Patent ID: 9738959
Date: 2017-08-22
CPC Classifications: B23K,C09D,C22C,C23C

Claim:
1. A work piece having at least a portion of its surface covered by a hard layer comprising an austenitic matrix microstructure containing fine-scaled hard boride, carbide, or complex boro-carbide particles; wherein the hard layer comprises a macro-hardness in excess of 40 HRC and a relative magnetic permeability less than 1.02; and wherein the hard layer comprises an alloy composition in wt. % of Mn: 8-20, Cr: 0-6, Nb: 2-8, V: 0-3, C: 1-6, B: 0-1.5, W: 0-10, Ti: 0-0.5.