| 摘要 |
<p>An alloy is prepd. which, after austenization, is used in a soft martensitic state, having up to 300 degrees C a 0.2 limit of at least 60 kg/mm2 and good notch impact strength to -100 degrees C. The alloy comprises the following in wt. %: Co 13-25, Cr 17-22, Mo 0.5-3.0, Ni 0.5-2, Cu 0.3-2, Nb-Ta 0.0.4, Zr 0-0.2, Ca 0-0.2, B 0-0.1, Al 0-.02, C 0-0.03, N 0-0.03, Si 0-0.02, Mn 0-0.5 and the remainder Fe.</p> |
