C22000 C2200 H90 Button Brass Coil

Brass is an alloy composed of copper and zinc. Brass composed of copper and zinc is called common brass. if various
Alloys composed of more than two elements are called special brasses. Brass is highly wear-resistant. brass is often used
Manufacture of valves, water pipes, connecting pipes for internal and external air conditioners, and radiators.

Press processing performance:
α single-phase brass (from H96 to H65) has good plasticity and can withstand hot and cold processing, but α single-phase brass is
Medium-temperature brittleness is easy to occur during hot processing such as forging, and the specific temperature range varies with Zn
content. The change is generally between 200~700ºC. Therefore, the temperature during heat treatment should be higher than
700°C. The reason for the formation of the medium temperature brittle zone of single-phase α brass is mainly due to the existence of
The study of Cu3Zn and Cu9Zn two ordered compounds in the α phase region of Cu-Zn alloy system. Ordered transformations occur in
Heating at medium and low temperatures makes the alloy brittle; , there are traces of lead and bismuth that are harmful to the human body
The impurities in the alloy and copper form a low-melting eutectic film distributed on the grain boundary, which will cause
Intergranular fracture during heat treatment. Practice has proved that adding a small amount of cerium can be effective
Eliminates medium temperature brittleness.
In two-phase brass (from H63 to H59), in addition to the α-phase with good plasticity, the β-phase is based on electronic solid solution
The compound CuZn also occurs in the alloy structure. The β phase has high plasticity at high temperature, while the β' phase (ordered
solid solution) is hard and brittle at low temperatures. Therefore (α+β) brass should be forged in a hot state. beta brass with
If the zinc content exceeds 46%-50%, it cannot be stamped due to its hardness and brittleness.