... , Cr 14-18%, Mn 1% max,C .02% max, Fe -Balance Coeff. of Lin. Expansion, X 10-6: 14 (200 ... 'C), 15(500'C), 15.5 (600'), 16 (800'C), 17 (1,000'C)onductivity:13 w/mK ... \ Grade NiCr 80/20 NiCr 70/30 NiCr 60/16 NiCr 35/20 NiCr 30/20 Main Chemical Composition% Ni ... 18.0 18.0-21.0 18.0-21.0 Fe ≤1.0 ≤1.0 Balance Balance Balance Max Continuous ... PROFESSIONAL IN THE WORLD Alloy 675 Resistance wire/NiCr60/16