| 摘要 |
A martensitic stainless steel alloy having a good combination of machinability, hardness capability, and corrosion resistance is disclosed which contains, in weight percent, about: -Preferred A Preferred B Preferred C -C up to 0.07 up to 0.07 up to 0.07 -N up to 0.07 up to 0.07 up to 0.07 -C + N up to 0.08 up to 0.08 up to 0.08 -Cu 1.0-3.0 1.0-3.5 1.0-3.5 -delta ferrite up to 11 up to 3 7-11 -Cr 10.0-14.0 10.0-14.0 10.0-14.0 -S 0.15-0.55 0.15-0.55 0.15-0.55 -Mn up to 1.25 up to 1.25 up to 1.25 -Si up to 1.0 up to 1.0 up to 1.0 -P up to 0.06 up to 0.06 up to 0.06 -Ni up to 1.0 up to 1.0 up to 1.0 -Mo up to 1.0 up to 1.0 up to 1.0 -B up to 0.01 up to 0.01 up to 0.01 -Te up to 0.10 up to 0.10 up to 0.10 -Se up to 0.25 up to 0.25 up to 0.25 -Bi up to 0.15 up to 0.15 up to 0.15 -Nb up to 0.10 up to 0.10 up to 0.10 - and the balance is essentially iron. In particular, this alloy has a hardness capability of at least about 32 HRC and good machinability in single-point turning, form-tool turning and drilling at a wide range of hardnesses including between about 96 HRB to 38 HRC.
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