BIMETAL STRIP HAVING A STABLE FE-MN-NI ALLOY WITH HIGH THERMAL EXPANSION AND ELECTRICAL RESISTIVITY

摘要

ABSTRACTBimetal strip the high expansion element of whichis an alloy which, in weight percent (w/o), consists essen-tially of up to about 0.50 w/o carbon, about 15-50 w/o man-ganese, up to about 2 w/o silicon, up to about 0.5 w/o chro-mium, about 10-35 w/o nickel, up to about 10 w/o cobalt andthe balance iron except for incidental amounts of otherelements which may include up to about 0.04 w/o phosphorus,up to about 0.04 w/o sulfur as well as other elements whichdo not significantly detract from the desired properties orresult in the formation of ferrite or otherwise render thedesired room temperature austenitic structure of the alloyunstable so as to significantly reduce the coefficient ofthermal expansion.