Thermal expansion of some nickel alloys

ear t hermal expa nsion of so m e ni ckel a ll oys (ma nganese ni ckel, H osk ins Alloy 667, In co nel, Evanohm, Monel metal, M-M-M all oy, IIIium all oy, and vVasp a ll oy) for van ous te mperatlll'e ra nges between 20 a nd 1,000 C are give n. Duri ng t he first heatin g of Inco nel all oys (l)roba bly wit h a s upersaturated co n ten t of ca r bon) , irreg ul a ri t ics we re noted m t he ex pansion at abo ut 700 C and were asc ribed to prec ipi tation of carbide. The coeffi cients of expa nSlO n of t he a ll oys are tabulated. F or t he ra nge 20 to 300 C these coC(fi cie nts vari ed fro m 13.1 to 1 5.5 X lO-6 per d eg C. The cffects o f a ddi t io ns of ~opp er , co balt, a nd 1ro n to Ill ckel-chromlUm a ll oys (0 to 24 perce nt of chro mium) a re indi cated .