DZR is the abbreviation of English Dezincification Resistant, also known as DR copper, adding As (arsenic) in brass, and the valve inhibits the loss of zinc in brass.
DR copper, which is dezinc-resistant brass, is a copper alloy with a zinc content of more than 37% which is sensitive to dezincification or dezincification in a corrosive environment. It is controlled by suitable chemical composition control and suitable process technology to make it Very high resistance to dezincification, able to meet the standard 'AS2345' by anti-dezincification test. For single-phase brass 'usually adding a very small amount of arsenic to suppress a-phase corrosion to make it highly resistant to dezincification, for two-phase brass, in addition to adding a small amount of arsenic, it is necessary to carefully control the chemical composition and The process to obtain dezincification resistance.
After years of large-scale production and process research and development, the company has developed mature DR copper production technology to ensure that it has very high resistance to dezincification and good cutting performance.
DR brass ingots, tubes and rods are used in the production of melt-casting extrusion and drawing technology. The tube bar metal has high density, uniform and fine metal structure, excellent mechanical properties and various process properties, fine surface quality, polishing and plating performance. excellent.
It is suitable for forging, stamping, rolling, car processing, welding and other forming processes. It has good polishing and electroplating effects. It is widely used in high-grade plumbing, sanitary ware, valves, ship fittings and other products with high corrosion resistance requirements. Components of products in the electrical, construction, automotive, instrumentation, machinery and other industries.
Chemical composition control range%
Mn≤0.10，Other elements alone≤0.020
DR brass bar
Sum of other elements≤0.2
Mn≤0.1,Sum of other elements≤0.2
DR brass ingot
Sum of other elements≤0.2
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