| 摘要 |
Ferrite alloy contains (in wt.%): 0.003-0.08 carbon, 0.03-2.0 silicon, not more than 2.0 manganese, more than 1.0 to not more than 8.0 nickel, not less than 10.0 to less than 19.0 chromium, 1.5-8.0 aluminum, 0.05-1.0 zirconium and a balance of iron and impurities. In the following equations, F is not less than 12% and S is not more than 25%: F = -34.3 C + 0.48 Si - 0.012 Mn - 1.4 Ni + Cr + 2.48 Al, and S = Ni + Cr + Al. After heat treating at 600-1050 deg C, the alloy has 0.2% deformation strength during a pulling test at room temperature. An Independent claim is also included for an alloy plate made from the ferrite alloy. Preferred Features: The alloy contains up to 0.06 carbon, up to 1.0 silicon, less than 5.0 nickel, 10.0-17.0 chromium, not less than 1.5 to less than 4.0 aluminum, up to 0.8 zirconium and a balance of iron.
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