Machinable brass compositions

摘要

PCT No. PCT/GB92/00154 Sec. 371 Date Sep. 29, 1993 Sec. 102(e) Date Sep. 29, 1993 PCT Filed Jan. 28, 1992 PCT Pub. No. WO92/13110 PCT Pub. Date Aug. 6, 1992.A powdered metallurgical composition comprising copper and zinc, which composition also includes a proportion of 0.1 to 1.5% by weight of graphite to improve the machinability of an article made from the composition.