| 摘要 |
520,282. Alloys. RUHRSTAHL AKT.-GES. Sept. 6, 1938, No. 26084. Convention date, Sept. 9, 1937. [Class 82 (i)] A steel alloy adapted in the tempered state for the manufacture of gear wheels and the like consists of iron, with or without the usual. impurities. containing 0À1 - 0À5 per cent. of carbon, more. than 1 to less than 1À5 per cent of manganese, 0À2 - 0À5 per cent. of silicon, more than 2À5 to 3 per cent. of chromium, and 0À3 to less than 0À6 per cent. of molybdenum, with or without 0À1 - 1 per cent. of tungsten or vanadium or both. |
