| 摘要 |
A case hardening corrosion resistant steel alloy contains about 0.05-0.1 w/o C, 0.05 w/o max. N, 1.5 w/o max. Mn, 1 w/o max. Si, 11-15 w/o Cr, 1-3 w/o Mo, 1.5-3.5 w/o Ni, 3-8 w/o Co, 0.1-1 w/o V, 0.010 w/o max. P, 0.005 w/o max. S and the balance Fe. In a preferred embodiment, the alloy is balanced so that: 3(w/o Cr) + 6(w/o Si) + 2.5 (w/o Mo) + 6(w/o V) - 25(w/o C+N) - 6(w/o Ni) - 2(w/0 Mn) - 2(w/o Co) - 21 </= 0. When case hardened and heat treated the alloy and articles made therefrom have high case hardness, corrosion resistance, high temperature capability and metal-to-metal wear resistance and high core ductility, impact toughness and fracture toughness. |
