Brass Brass is an alloy composed of copper and zinc. If only composed of copper, zinc, brass called ordinary brass. If it is composed by two kinds or more elements of the variety of alloys called special brass. As consisting of lead, tin, manganese, nickel, iron, silicon, copper alloy. Brass has strong wear resistance. Special brass, also known as special brass, it strength, hardness, chemical resistance. Machining mechanical properties are more prominent. Seamless Copper Tube from brass pull into soft, strong wear resistance. Brass seamless tube heat exchanger and condenser can be used for low temperature piping, undersea transportation tube. Manufacturing sheet, strip, bar, pipe, casting parts. Copper at 62% to 68%, strong plastic manufacturing pressure equipment. According to the different types of alloying elements contained in the brass, brass is divided into the ordinary brass special brass two of. The pressure processing brass called deformation brass lead leaded brass brass (commonly known as cutting brass): Lead actual insoluble in brass, was free particle state distribution at the grain boundaries. Brass lead their organizations both α and (α + β). α lead brass because of the harmful effects of lead greater high temperature ductility is very low, so the only cold deformation or hot extrusion. (Α + β) the lead brass has good plasticity at high temperatures, can be forged. Characteristics of brass; electrical conductivity, thermal conductivity, high in the atmosphere and freshwater corrosion resistance and good plasticity, easy to cold, hot pressure processing, easy welding, forging and tinning, no stress corrosion rupture tendency . Japan's Sumitomo lead brass suitable for automatic lathes, CNC lathe ecological environmental protection and health and safety requirements of products, such as electronics, telecommunications, electrical connectors, couplings, metal, photography, home appliances, drinking water engineering parts. Applicable to bathing water heaters, liners, handicrafts, construction materials, chemical industry, electrical terminals. The green copper has high strength, compact and uniform organization, good corrosion resistance, excellent cutting, drilling and other machining performance, and has a uniform and fine processing copper scrap, smooth surface processing characteristics for high-speed automated processing. C3604 green copper cutting performance excellent for bolts, nuts, screws, shafts, gears, valves, and watch, carburetor, IT industry, precision instrument parts. Heat treatment processing technology: lead brass smelting, casting production is not difficult, you can use the induction melting crucible melting, casting production can be semi-continuous ingot casting, sand mold, iron mold; the leaded brass pressure processing performance and not excellent, generally three Passable to the hot workability of the compressive stress, the hot extrusion of the main means of thermal deformation, and the other thermal processing methods, such as hot-rolled, is easy to produce the phenomenon of edge cracks. (Α + β) two-phase the lead brass thermal processing performance is superior to single-phase lead brass. Lead brass cold working poor performance, large deformation hardening modern leaded brass pressure processing method, the rapid development of the level of the slab material cold working method. C3604 environmental copper has high strength, compact and uniform organization, good corrosion resistance, cutting, drilling and other excellent machining performance, and has a uniform and fine processing copper scrap, smooth surface processing, the application of high-speed automatic processing C3604 environmental copper cutting performance is excellent for bolts, nuts, screws, shafts, gears, valves, and watch carburetor, IT industry, precision instrument parts C36000 36000 ductility, deep drawing performance. Applies to watch parts, cars, tractors and general machine parts. Lead brass cutting performance, high antifriction properties for watches structural parts and automobile and tractor parts. C3602 has excellent machinability, excellent thermal shock, cold heading and ductility, good knurling, riveting performance, good cold performance and machinability, corrosion resistance and good electrical conductivity. Widely used in watches, instruments, bathroom, bolts, nuts, valves, lighters and other parts. C3602 suitable for cold heading, bending, riveting, electronics, telecommunications connectors, couplings and other parts of the ecological environmental protection and health and safety requirements. C3602 suitable for automatic lathes, CNC lathe ecological environmental protection and health and safety requirements of products, such as electronics, telecommunications, gas connectors, photographic equipment coupling, appliances, hardware, drinking water parts, auto parts casting and hot and cold forming, cutting parts manufacturing. Brass grade China, USA and Japan performance characteristics and use environmental brass H62 C28000 C2800 good mechanical properties, thermal state plasticity is good, good machinability, good weldability, corrosion resistance, and a variety of deep drawing and bending by mechanical parts, such as pins, nuts, the barometer spring, heat dissipation, ring-shaped pieces of environmental protection brass H65 C27000 C2700 good mechanical properties, can withstand hot and cold processing for the production of hardware, daily necessities, screws and other parts environmental brass H70 C26000 C2600 plastic excellent, high strength, good machining, welding, corrosion resistance, heat exchangers, paper tubes, machinery, electronic components, environmental brass H90 C22000 C2200 strength, good thermal conductivity, electrical conductivity can be metallized, a variety of water supply and drainage, bimetal and medals, art, etc.