详情描述

Copper Rods, Copper Plates, Copper Hex Rods, Copper Tubes, Copper Strips, Copper Bars, Copper H65, Copper Strip, Copper Rod, Copper Plate, Copper Bar, Copper Tube, Copper Wire

Copper alloys are alloys composed of pure copper as the base, with one or more other elements added. Pure copper is purplish-red in color and is also known as purple copper. It has a density of 8.96 and a melting point of 1083°C, with excellent electrical and thermal conductivity, malleability, and corrosion resistance. They are primarily used in the manufacturing of electrical equipment such as generators, busbars, cables, switchgear, transformers, and heat exchangers, as well as conductive materials like flat collectors for thermal exchange equipment, pipelines, and solar heating systems. The commonly used copper alloys are divided into three main categories: brass, bronze, and white copper.

   

Brass is a copper alloy primarily composed of zinc, characterized by its attractive yellow color, collectively known as brass. The copper-zinc binary alloy is referred to as common brass or simple brass. Brass with three or more elements is known as special brass or complex brass. Brass alloys with less than 36% zinc are composed of solid solutions and possess good cold working properties, such as 30% zinc brass, commonly used for shell casings, also known as shell brass or 73 brass. Brass alloys with zinc content between 36% and 42% are composed of both solid solutions, with 40% zinc brass, known as 64 brass, being commonly used. To enhance the properties of common brass, other elements like aluminum, nickel, manganese, tin, silicon, and lead are often added. Aluminum can increase the strength, hardness, and corrosion resistance of brass, but it reduces plasticity, making it suitable for marine condenser tubes and other corrosion-resistant components. Tin enhances the strength and corrosion resistance to seawater in brass, hence the term naval brass, used for ship's thermal equipment and propellers. Lead improves the machinability of brass; this readily machinable brass is commonly used for watch parts. Brass castings are often used to make valves and pipe fittings.

   

Bronze, originally referring to copper-tin alloys, later became the general term for copper alloys excluding brass and beryllium copper, often prefixed by the name of the primary added element. Tin bronze has excellent casting, friction reduction, and mechanical properties, making it suitable for manufacturing bearings, worm gears, and gears. Lead bronze is widely used as bearing material in modern engines and milling machines. Aluminum bronze boasts high strength, good wear and corrosion resistance, and is used for casting high-load gears, sleeve shafts, ship propellers, etc. Beryllium bronze and phosphorus bronze have high elastic limits and good electrical conductivity, making them ideal for manufacturing precision springs and electrical contact elements. Beryllium bronze is also used to produce non-sparking tools for use in coal mines and oil depots.

   


Brass, a copper alloy primarily composed of nickel. Copper-nickel binary alloys are known as common brass; brass alloys added with elements like manganese, iron, zinc, and aluminum are called complex brass. Industrial brass is divided into two main categories: structural brass and electrical brass. Structural brass is characterized by good mechanical properties and corrosion resistance, as well as attractive appearance. This type of brass is widely used in the manufacturing of precision machinery, chemical equipment, and ship components. Electrical brass generally exhibits good thermoelectric properties. Manganese brass, Constantan, and Karat are different manganese-containing types of brass, used for making precision electrical instruments, variable resistors, precision resistors, strain gauges, thermocouples, and more.