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Brass is a copper alloy with zinc as the main added element. Brass is divided into two types: ordinary brass (simple brass) and special brass (complex brass). Brass is represented by Chinese pinyin letters. Various brasses are expressed by adding copper content at the end or adding element symbols and nominal mass fractions except for zinc. It means that the mass fraction of copper is , the mass fraction of the main additive element lead is , and the balance is zinc lead brass. Copper-zinc binary alloy is called ordinary brass, such as (mass fraction of copper is %, zinc is %), these two kinds of brass can also be called brass and brass. Brass is an alloy of red copper and zinc, named after its yellow color. Brass with a copper content of %~% has a melting point of ~°C. Brass has good mechanical properties and wear resistance, and can be used to manufacture precision instruments, ship parts, gun shells, etc. Different zinc content will also have different colors. For example, if the zinc content is %%, it will be red and yellow, while if the zinc content is %%, it will be brown. In addition, brass has a unique sound when struck, so Eastern instruments such as gongs, cymbals, bells, and horns, as well as Western brass instruments are all made of brass.
Dongguan Sennuo Metal, a high-quality brass supplier, deals in American Comcast brass, Japanese Sumitomo brass, and domestic Luoyang copper, with complete specifications and sufficient inventory.
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Mechanical properties
Brass contains zinc Different amounts have different mechanical properties. The mechanical properties of brass change with different zinc contents. For brass, as the zinc content increases, the strength will decrease. When the zinc content increases to about %, the room temperature strength continues to increase. If the zinc content is further increased, the strength will decrease sharply due to the emergence of a more brittle compound-based solid solution in the alloy structure. The room temperature plasticity of brass always decreases with the increase of zinc content. Therefore, copper-zinc alloys with zinc content exceeding % have no practical value.
Ordinary brass has a wide range of uses, such as water tank straps, water supply and drainage pipes, medals, bellows, serpentine tubes, condenser tubes and various complex-shaped stamping products, small hardware, etc. As the zinc content increases from to to, they can withstand hot processing well and are mostly used in various parts of machinery and electrical appliances, stamping parts, musical instruments, etc.
Basic classification
Lead brass
Lead is actually insoluble in brass and is distributed on the grain boundaries in the form of free particles. Lead brass is divided into two types: lead brass and (+) according to its structure. Due to the greater harmful effects of lead and low high-temperature plasticity, lead brass can only be cold deformed or hot extruded. (+) Lead brass has good plasticity at high temperatures and can be forged.
Environmentally friendly brass has excellent plasticity, high strength, good machinability, welding, and corrosion resistance. It is used in heat exchangers, papermaking pipes, machinery, and electronic parts.
Features: Excellent cutting performance, suitable for high-precision parts processed by automatic lathes and CNC lathes.