| 摘要 |
<p>A martensitic heat resisting steel having improved heat resistance, which consists by weight percentage of 0.35 % </= C </= 0.60 %, 1.0 % </= Si </= 2.5 %, 0.1 % </= Mn < 1.5 %, 7.5 % </= Cr </= 13.0 %, one or both of 1.0 % </= Mo </= 3.0 % and 1.0 % </= W </= 3.0 % so that 1.5 % </= (Mo+0.5W) </= 3.0 %, optionally 0.1 % </= Nb+Ta </= 1.0 %, 0.1 % </= V </= 1.0 % and S </= 0.1 %, and the remainder is substantially Fe.</p> |
