1. Features of pure red copper: high purity, fine organization, extremely low oxygen content. none

Pores, trachoma, porosity, excellent electrical conductivity, high precision of the surface of the electro-etched mold, after heat treatment process, the electrode is non-directional, suitable for fine-cutting, fine-cutting, the performance is comparable to Japan’s pure red copper, the price is more affordable, it is an alternative The preferred product for imported copper.Cu≥99.95% O<003Conductivity≥57ms/mHardness≥85.2HV

2. Chromium-copper characteristics: good electrical and thermal conductivity, high hardness, wear-resistant and anti-explosion, commonly used as a conductive block.

3. Beryllium copper properties: Beryllium copper is a supersaturated solid solution copper-based alloy. It is a non-ferrous alloy with a good combination of mechanical properties, physical properties, chemical properties and corrosion resistance. After solid solution and aging treatment, it has equivalent to special steel. The high strength limit, elastic limit, yield limit and fatigue limit. At the same time, it has high electrical conductivity, thermal conductivity, high hardness and wear resistance, high creep resistance and corrosion resistance. Welding electrode materials for die-casting machines, injection molding machine punches, wear-resistant and corrosion-resistant work, etc., beryllium copper strips are used in micro-motor brushes, mobile phone batteries, computer connectors, various switch contacts, springs, clips, gaskets, diaphragms, Membrane and other products. It is an indispensable and important industrial material in national economic construction. Density 8.3g/cm3 Hardness 36-42HRC Electrical conductivity ≥18% IACS tensile strength ≥1000Mpa Thermal conductivity ≥105w/m.k20℃

4. Characteristics of tungsten and copper: when powder metallurgy is used for molds made of tungsten steel, high carbon steel and high temperature resistant super-hard alloy, when electric corrosion is required, due to the large loss and slow speed of ordinary electrodes, tungsten copper is an ideal material. Bending strength≥667Mpa

Density 14g/cm3 Hardness ≥ 184HV Conductivity ≥ 42% IACS.

In modern times, copper still has an extremely wide range of uses. The conductivity of copper is second only to silver, ranking second among metals, and is widely used in the electrical industry.

Copper is easy to form alloys with other metals. There are many kinds of copper alloys. For example, bronze (80%Cu, 15%Sn, 5%Zn) is tough, high hardness and easy to cast; brass (60%Cu, 40%Zn) is widely used. Used to make instrument parts; cupronickel (50%-70%Cu, 18%-20%Ni, 13%-15%Zn) is mainly used as a tool.

Copper and iron, manganese, molybdenum, boron, zinc, cobalt and other elements can be used as trace element fertilizers. Trace elements are indispensable for the normal life activities of plants. They can improve the activity of enzymes, promote the synthesis of sugar, starch, proteins, nucleic acids, vitamins and enzymes, which are beneficial to the growth of plants.

Copper plays an important role in the living system. There are more than 30 kinds of proteins and enzymes in the human body that contain copper. Now it is known that the most important physiological function of copper is ceruloplasmin in human serum, which has the function of catalyzing the physiological metabolism of iron. Copper also increases the ability of white blood cells to destroy bacteria and enhances the therapeutic effects of certain medications. Although copper is a vital element, if consumed in excess, it can cause a variety of diseases.

1. Performance

Copper has good physical and chemical properties such as electrical conductivity, thermal conductivity, corrosion resistance and ductility. The electrical conductivity and thermal conductivity are second only to silver, and pure copper can be drawn into very thin copper wires to make very thin copper foils. The fresh section of pure copper is rose red, but after the copper oxide film is formed on the surface, the appearance is purple, so it is often called red copper.

Copper except pure copper

, copper can be combined with tin, zinc, nickel and other metals to synthesize alloys with different characteristics, namely bronze, brass and cupronickel. If zinc is added to pure copper (99.99%), it is called brass. For example, ordinary brass tubes containing 80% copper and 20% zinc are used in condensers of power plants and automobile radiators; adding nickel is called white copper , the rest are called bronze. Except for zinc and nickel, all copper alloys with other metal elements are called bronze, and what element is added is called what element. The most important bronzes are tin phosphor bronze and beryllium bronze. For example, tin bronze has a very long history of application in my country, and is used to cast bells, tripods, musical instruments and sacrificial vessels. Tin bronze can also be used as bearings, bushings and wear parts, etc.

The electrical conductivity of pure copper is different, and the strength and corrosion resistance of copper can be greatly improved by alloying. Some of these alloys are wear-resistant and have good casting properties, and some have better mechanical properties and corrosion resistance.

2. Purpose

Because copper has the above-mentioned excellent properties, it has a wide range of industrial uses. Including electrical industry, machinery manufacturing, transportation, construction and so on. At present, copper is mainly used in the manufacture of wires, communication cables and other finished products such as electric motors, generator rotors and electronic instruments and meters in this field of the electrical and electronic industry, which accounts for about half of the total industrial demand. Copper and copper alloys occupy an important position in computer chips, integrated circuits, transistors, printed circuit boards and other equipment and devices. For example, the transistor leads use a chromium-zirconium-copper alloy with high electrical conductivity and high thermal conductivity. Recently, the internationally renowned computer company IBM has adopted copper to replace aluminum in silicon chips, which marks the latest breakthrough in the application of the oldest metal in human beings in semiconductor technology.