The unleaded free-cutting brass alloy which includes antimony

摘要

This invention offers the brass alloy which includes unleaded free-cutting antimony, the particular alloy, the 55-65 weight % Cu and the 0.3-2.0 weight % Sb and the 0.2-1.0 weight % Mn, and the 0.1-1.0 weight % includes the other element, it is the impurity to which the aforementioned other element, Ti, Ni, B, Fe, Se, Mg, Si, Sn, P and the rare earth metal includes the element of 2 types at least, as for remainder zinc is not avoided. The brass alloy which includes the unleaded free-cutting antimony of this invention cutting efficiency and the satisfactory welding efficiency which are superior and, superiority has with corrosion resistance and anti- dezincification characteristic and anti- high-temperature oxidation efficiency, is adapted to the water supply system, the home appliance product, the toy and the tightening part for the especially people. In addition, this invention offers also the production method of the particular copper alloy.