| 摘要 |
<p>p martensitic steel alloy has a unique combination of hardness and corrosion resistance. Broadly stated, the alloy contains, in weight percent, about: C 1.40-1.75, Mn 0.30-1.0, Si 0.80 max., P 0.020 max., S 0.015 max., Cr 13.5-18.0, Ni 0.15-0.65, Mo 0.40-1.50, V 1.0 max., N 0.02-0.08 and the balance essentially iron. The alloy is balanced within the stated weight percent ranges such that the ratio %Cr:%C is about 10.0-11.0 and the sum %Ni+%Mn is at least about 0.75. The allow can be hardened to at least about 60 HRC from a wide range of solution treating temperatures and provides corrosion resistance that is similar to Type 440c alloy.</p> |
