Improvements in electric resistance alloys

摘要

Nickel-chromium or nickel-chromium - iron alloys for the production of electric resistance wire or strip are made by the addition of 0,01-0,25 per cent of calcium and 0,1-1 per cent of zirconium, and contain up to 0,15 per cent of calcium, and up to 1 per cent of zirconium. The calcium may be added as metal and the zirconium as an alloy with iron or nickel.