2 kinds of copper can GM? Please expert pointing
special brassThe addition of other alloy elements in common brass is called a brass alloy. The commonly added elements are lead, tin, aluminum and so on. They can also be called lead brass, tin brass and aluminum brass. The purpose of adding alloying elements. Mainly to improve tensile strength, improve the process, code name: "H + main plus element signs (except zinc) + copper quality fraction + main plus element mass fraction + other elements mass fraction". For example: HPb59-1 means that the mass fraction of copper is 59%, including the main plus element, the mass fraction of lead is 1%, and the lead zinc in excess of zinc.
For example, "H68" means that copper content is 68%, zinc content is 32%, brass, casting brass is in the code before "Z" word, such as ZH62, such as Zcuzn38, said zinc content is 38%, copper casting copper. H90, H80, single phase, golden yellow, so it is called gold, known as coating, decorations, medals and so on. H68 and H59 are dual phase brass, widely used in electrical components, such as bolts, nuts, washers, springs, etc.. In general, cold deformation is processed with single phase brass by hot deformation using dual phase brass.
Plain brassIt is an alloy made of copper and zinc. When the amount of zinc is less than 39%, zinc can dissolve in copper, forming single-phase a, called single-phase brass, good plasticity, suitable for cold and hot pressing processing. When the zinc content is greater than 39%, a as well as single-phase copper zinc based B solid solution, called double phase brass, B plastic small and tensile strength increase, only suitable for hot working if continue to increase the mass fraction of zinc, while the tensile strength decreased, the non use value of "H + code table H shows that digital digital representation of brass, copper mass fraction.
