| 摘要 |
A brass alloy having the composition 63.5 - 66.5 % Cu+Ni, 0 - 0.8 % Ni, 0.5 - 3.0 % Pb, 0.3 - 1.0 % Si, preferably 0.65 - 0.80 % Si, 0.07 - 0.80 % Fe, preferably 0.10 - 0.50 % Fe and the rest mainly Zn. This alloy is resistant to dezincification, stress corrosion and intergranular corrosion. It can be formed by die-casting, chill casting, warm-pressing and hot-forging. Also, an alloy having a more limited composition 64.5 - 65.5 % Cu+Ni, 0-0.8 % Ni, 1.5 - 2.2 % Pb, 0.65 - 0.80 % Si, 0.10 - 0.20 % Fe and the rest essentially Zn can be extruded to bars, tubes and profiles. When the alloy is smelted, possible admixtures of Fe ought to be done in the form of a ferro-copper alloy. |
