| 摘要 |
Alloys consisting of (1) iron with 4,7-34,5 per cent of aluminium; (2) copper with 5,2 or 7.98 per cent of tin, 3,8 or 2,1 per cent of lead, and 5,55 or 4,8 per cent of zinc for use as bearing metal; (3) copper with 14,4 per cent of lead, or 19 per cent of lead and 28 per cent of iron; and other alloys of specified known compositions, may be cast by the processes described in Specifications 362,035, 363,142, and 380,905, [all in Group XXII]. |
