National standard H59.H62.H65 brass rod, easy turning brass rod, precision brass tube

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Brass is an alloy composed of copper and zinc. If brass is composed only of copper and zinc, it is called ordinary brass. If it is a variety of alloys composed of more than two elements, it is called special brass. Such as copper alloy composed of lead, tin, manganese, nickel, lead, iron and silicon. Brass has strong wear resistance. Special brass is also called special brass. It has high strength, hardness and strong chemical corrosion resistance. The mechanical properties of cutting processing are also outstanding. Seamless copper tubes drawn from brass are soft and wear-resistant. Brass seamless pipes can be used in heat exchangers and condensers, cryogenic pipelines, and submarine transportation pipes. Manufacture of sheets, bars, rods, tubes, cast parts, etc. Containing copper, it has strong plasticity and can be used to manufacture pressure-resistant equipment, etc. Brass is a copper alloy with zinc as the main added element. It has a beautiful yellow color and is collectively called brass. Copper-zinc binary alloy is called ordinary brass or simple brass. Brass with more than three elements is called special brass or complex brass. Brass alloys containing less than 100% zinc are composed of solid solutions and have good cold working properties. For example, brass containing zinc is often used to make cartridge cases, commonly known as cartridge case brass or 73 brass. Brass alloys containing zinc between In order to improve the performance of ordinary brass, other elements are often added, such as aluminum, nickel, manganese, tin, silicon, lead, etc. Aluminum can improve the strength, hardness and corrosion resistance of brass, but reduces the plasticity. It is suitable for use in condenser tubes and other corrosion-resistant parts for sea vessels. Tin can improve the strength of brass and its corrosion resistance to seawater, so it is called naval brass and is used for ship thermal equipment and propellers. Lead can improve the cutting properties of brass; this kind of easy-cut brass is often used as watch parts. Brass castings are commonly used to make valves and pipe fittings.
Due to the different zinc content in brass, the mechanical properties are also different. The mechanical properties of brass change with the zinc content. For brass, as the zinc content increases, both and both increase continuously. For (+) brass, room temperature strength continues to increase as the zinc content increases to approximately. If the zinc content is further increased, the strength of the compound-based solid solution will decrease sharply due to the emergence of a more brittle phase in the alloy structure. (+) The room temperature plasticity of brass always decreases as the zinc content increases. Therefore, copper-zinc alloys with a zinc content exceeding 10% have no practical value.
Ordinary brass is widely used, such as water tank belts, water supply and drainage pipes, medals, bellows, serpentine tubes, condenser tubes, cartridge cases and various complex shapes. 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.
Me The company Yimin specializes in the production and sales of brass strips, brass plates, brass rods, brass wires, brass tubes, brass rows (material grades,,,,,,,,phosphorus bronze plates,phosphorus bronze strips,phosphorus bronze Wire, phosphorus copper rod, phosphorus copper tube, (material brands include,, copper tube, copper strip, copper wire, copper rod, copper plate (material brands include,,, beryllium copper plate, beryllium copper rod, beryllium copper strip, beryllium Copper wire, beryllium copper tube and other types of imported domestic copper products.
Ordinary brass is the cheapest, has high strength and hardness but poor plasticity, but it can still withstand pressure processing well under heat treatment and is corrosion-resistant. The resistance is average, and other properties are similar. It is used for general machine parts, welding parts, hot stamping and hot-rolled parts.
Ordinary brass has good mechanical properties, good plasticity in hot state, and good plasticity in cold state. , good machinability, easy to braze and weld, corrosion-resistant, but prone to corrosion cracking. In addition, it is cheap and is a common brass variety that is commonly used. It is used for various deep drawing and bending made parts, such as pins. , rivets, washers, nuts, conduits, barometer springs, screens, radiator parts, etc.
, national standard brass is suitable for pressure processing in cold conditions and is suitable for welding and brazing. It is easy to polish and is suitable for The main alloy for drawing, rolling, bending, etc. Used for screws, round rollers for pickling, etc.
The performance of national standard brass is between and, the price is relatively cheap, and it also has high strength and plasticity , can withstand cold and hot pressure processing well, and has a tendency of corrosion and cracking. It is used in small hardware, daily necessities, small springs, screws, rivets and mechanical parts.
, National standard brass has extremely good plasticity (the best among brass) The best) and higher strength, good cutting performance, easy to weld, not resistant to general corrosion, but prone to cracking. It is the most widely used variety among ordinary brass. Used for complex cold stamping parts and Deep-drawn parts, such as radiator shells, conduits, bellows, cartridge cases, gaskets, etc.
Neutral brass has extremely good plasticity (the best among brass) and high strength, and is easy to cut It has good processing performance, is easy to weld, and is not resistant to general corrosion, but is prone to cracking. It is used for complex cold-drawn parts and deep-drawn parts, such as radiator shells, conduits, bellows, cartridge cases, and gaskets.
, Neutral brass has very good mechanical properties, process performance and corrosion resistance. It can be well processed under pressure in hot and cold states. It is between , and in terms of performance and economy. It is used for low-load corrosion-resistant springs. .
The performance of high-precision brass is similar to that of high-precision brass, but it has higher strength and better plasticity. It has higher corrosion resistance in the atmosphere, fresh water and sea water. Used for papermaking mesh, thin-walled pipes, corrugated pipes and house construction supplies.
High-precision brass has high strength, good plasticity, can withstand cold and hot pressure processing, and has good welding and corrosion resistance properties. Used for condensation and heat dissipation pipes, siphons, serpentine tubes, cooling equipment parts.
The performance of high-precision brass is similar to that of high-precision brass, but its strength is slightly higher. It can be plated with metal and coated with enamel. Used in water and drain pipes, medals, artwork, tank straps and bimetal strips.
High-precision brass has higher strength than copper (but among ordinary brass, it has the lowest thermal conductivity, good electrical conductivity, high corrosion resistance in the atmosphere and water, good plasticity, and easy Cold and hot pressure processing, easy to weld, forge and tin plating, no tendency of stress corrosion cracking.
In order to improve the corrosion resistance, strength, hardness and machinability of brass, a small amount (generally) is added to the copper-zinc alloy Tin, aluminum, manganese, iron, silicon, nickel, lead and other elements form a ternary, quaternary or even quinary alloy, which is complex brass, also known as special Brass.
The phases and phases in special brass are multi-complex solid solutions, and their strengthening effects are greater, while the phases and phases in ordinary brass are simple solid solutions, and their strengthening effects are lower. Although the zinc equivalents are equivalent, The properties of multi-element solid solutions are different from those of simple binary solid solutions. Therefore, a small amount of multi-element strengthening is a way to improve the properties of alloys.
Lead brass
Lead is actually insoluble in brass and appears as free particles. The state is distributed on the grain boundaries. According to its structure, lead brass has two types: and (+). 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.
Tin brass
Adding tin to brass can significantly improve the heat resistance of the alloy, especially the resistance to seawater corrosion. Ability, so tin brass is called navy brass. Tin can dissolve into the copper-based solid solution and play a solid solution strengthening role. However, as the tin content increases, a brittle phase will appear in the alloy (the compound is not conducive to the alloy's Plastic deformation, so the tin content of tin brass is generally in the range of ~.
Commonly used tin brass include,,, etc. The former is an alloy with high plasticity and can be processed by cold and hot pressure. The latter The two grades of alloys have (+) two-phase structures, and a small amount of phases often appear. The plasticity at room temperature is not high and can only be deformed in the hot state.
Manganese Brass
Manganese is in solid brass It has a large solubility. Adding ~ manganese to brass can significantly improve the strength and corrosion resistance of the alloy without reducing its plasticity.
Manganese brass has a (+) structure. Commonly used ones are cold, The press workability in the hot state is quite good.
Iron Brass
In iron brass, iron is precipitated as particles of iron-rich phase, which serve as crystal nuclei to refine the grains and prevent recrystallization. The grains grow larger, thereby improving the mechanical properties and process properties of the alloy. The iron content in iron brass is usually below, and its structure is (+). It has high strength and toughness, good plasticity at high temperatures, and can also be deformed in the cold state. Commonly used grades are.
Nickel Brass
Nickel and copper can form a continuous solid solution, significantly expanding the phase area. Adding nickel to brass can significantly improve the corrosion resistance of brass in the atmosphere and seawater. Nickel It can also increase the recrystallization temperature of brass and promote the formation of finer grains.
Nickel brass has a single-phase structure and has good plasticity at room temperature. It can also be deformed in a hot state, but it is not sensitive to impurities. The content of lead must be strictly controlled, otherwise the hot workability of the alloy will be seriously deteriorated.