CORROSION RESISTANT MAGNETIC ALLOY, AN ARTICLE THEREFROM AND A METHOD OF USING SAME

摘要

A corrosion resistant, soft magnetic, ferritic steel alloy, a useful article made therefrom, and a method of using the alloy are described. The alloy has the following composition in weight percent. C - 0.005-0.040; Mn - 1.0 max.; Si - 1.0 max.; P - 0.050 max.; S - 0.020 max.; Cr - 27.0-30.0; Ni - 0.35 max.; Mo - 0.35 max.; Cu - 0.35 max.; Co - 0.25 max.; N - 0.010-0.05. The balance is essentially iron and the usual impurities found in similar grades of ferritic stainless steels. In accordance with another aspect of this invention, there is disclosed a magnetic component for a magnetically actuated device such as a solenoid valve wherein the magnetic component is formed of the aforesaid alloy. In accordance with a further aspect of this invention, there is disclosed a solenoid valve that incorporates a movable magnetic core that is formed of the aforesaid alloy.