Brass chemical composition: it is the composition of the alloy of copper and zinc. When the zinc content of less than 39% zinc can be dissolved copper form a single-phase, known as single-phase brass, plastic, suitable for hot and cold pressure processing. When the zinc-containing greater than 39%, there is a single-phase solid solution of copper-zinc base b, said two-phase brass, b so that the plasticity is small and the tensile strength increased, and only suitable for a hot pressure processing 1.H59 ordinary brass; cheapest price, strength, high hardness and plastic, but still under the heat treatment well withstand pressure processing, general corrosion resistance, similar to other performance and H62. For general machine parts, welding parts, hot red and hot rolling parts. 2.H62 ordinary brass; has good mechanical properties, good thermal state plastic under cold plastic is good, cutting, easy brazing and welding, corrosion resistance, but prone to corrosion cracking. In addition, the price is cheap, is the application of recidivist a variety of ordinary brass. For a variety of deep drawing and bending manufacturing Shouli parts, such as pins, rivets, washers, nuts, catheters, barometer spring, screen, radiator parts. 3.H63 GB Brass; suitable for cold state pressure processing, suitable for welding and brazing. Easily polished, brushed, rolled, bending, forming the main alloying. For screws, pickling with a round roller. Shanghai Tian Rui Metal Materials Co., Ltd. (according to user needs, can be produced according to drawings) Marketing Miss Li T :021-63066307/56062869 F :021-56060561 QQ: 441594627/1650507469 Address: Shanghai Zhabei District Lingshi Road 891 Email: coco_trcopper@163.com URL: www.tr-copper.com lwtrjs20130516