Importance

Loading Importance Indicators...

Abstract

The present invention relates to a martensitic free cutting stainless steel, comprising: by weight percent, C: 0.10 to 1.20%, Si: 0.10 to 2.00%, Mn: 0.80 to 2.00%, S: 0.10 to 0.30%, Cr: 10.5 to 18.0%, Pb: 0.03 to 0.30%, Te: 0.01 to 0.10%, B: 0.0005 to 0.010%, and O: 0.005 to 0.030%, with the reminder being substantially Fe and inevitable impurities; wherein, among the inevitable impurities, contents of P and N are, P: 0.005 to 0.10%, and N: .ltoreq.0.050%; wherein respective formulae of 3.0.ltoreq.[Mn]/[S].ltoreq.15.0, 0.10.ltoreq.[Te]/[S], and 10.ltoreq.[S]/[O].ltoreq.40 are satisfied; and wherein a sulfide having a circle equivalent diameter of 2.0 .mu.m or more and an aspect ratio of 10 or less is present in a total amount of 0.50 to 10% by area ratio.

Loading the Abstract Image...

First Claim