| 摘要 |
509,332. Alloys. BRITISH DRIVERHARRIS CO., Ltd., and KAY, W. M. Feb. 5, 1938, No. 3706. [Class 82 (i)] Nickel-chromium or nickel-chromium-iron alloys for resistance wires or strips contain 0.3-0.5 per cent of uranium, with or without 0.01-5 per cent of calcium, 1-20 per cent of molybdenum, or 0.1-1 per cent of zirconium and with or without additions of tungsten, vanadium, cobalt, manganese, silicon, alkaline earth metals, or rare earth metals. Specifications 413,048, 438,140, 438,759 and 459,319 are referred to. |
