Guide: High Precision Copper Strip refers to all kinds of technical specifications (such as chemical composition, thickness deviation, shape and surface quality) and physical properties (generally including tension, hardness and Bending Force) in line with higher precision requirements 'and in line with the director of similar products in the Chinese market belong to (high) or (higher) of the National Standard (GB) requirements.

Copper Strip is a kind of metal element, the product specification has 0.1 ~ 350 ~ 250mm various state copper strip product, mainly uses in the production electric appliance component, the lamp head, the battery Cap, the button, the seal piece, the connector, mainly uses in the electric conduction, the heat conduction, the corrosion resistance equipment. Such as electrical components, switches, washers, gaskets, electric vacuum devices, radiators, conductive base materials and Automotive Water Tanks, heat sinks, cylinder pieces and other parts.

1.High precision zinc white copper strip

BZn15-20(C7541) BZn18-18(C7521) BZn18-20(C7521) BZn18-10(C7351) BZn18-26(C7701) cupronickel alloy is an alloy containing cu-ni alloy and zinc in different proportions, but without silver. "silver" means the colour and Lustre of the alloy. Zinc white copper strip is bright silver white, with good processability, magnetic shielding, corrosion resistance and high elasticity.

High precision zinc white copper strips are widely used in crystal resonator enclosures, mobile phone shielding covers, spectacle frames, optical instruments, silverware, jewellery, zippers and keys, musical instruments and coins, etc. 

2.Copper tape for high precision lead frame, LED lead and IC lead frame

QFE0.1(XYK-1/C1921/KFC) Qfe2.5(XYK-4/C194) ; three different types of alloys form the three main series of copper strips for lead frames: copper-iron-phosphorus Alloy, copper-nickel-silicon Alloy and copper-chromium-zirconium alloy. Copper Strip for high precision lead frame has high conductivity and thermal conductivity, as well as high strength and corrosion resistance. C194 and KFC are the two most representative copper-iron-phosphorus alloys, and are also the most commonly used.

Copper tape for high precision lead frames is the basic material for the fabrication of integrated circuits, discrete semiconductor devices and LED lead frames. It is mainly used in integrated circuits, high and medium power tubes, light-emitting diode and triode.

3.High precision brass strip

H62(C2800) H63(C2720) H65(C2680) H68(C2620) H70(C2600) brass is a copper alloy containing copper and zinc and is the most widely used high-precision copper alloy. Brass has excellent mechanical properties, physical properties, high electrical and thermal conductivity and corrosion resistance. High precision brass strip is widely used in electronic, telecommunication equipment and household appliances connector and accessories, interior decoration, clothing accessories, vehicle water tank, battery and * Cap.

4.High Precision Tin Phosphor Green Strip

QSn4.0-0.3(C5100C5101C5102C5111) QSn6.5-0.1(C5191) QSn8.0-0.3(C5210) high precision Tin Phosphor Bronze (or tin bronze) is an alloy containing copper, tin and phosphorus. The addition of tin increases the corrosion resistance and strength of the alloy, while phosphorus acts as a deoxidizer during melting and increases wear resistance, hardness, fluidity and processability.

High Precision Tin Phosphor Bronze Strip has good elasticity, high strength and corrosion resistance, they are mainly used in electronic parts, connectors for telecommunications equipment, wear resistant and magnetic resistant parts for precision Instrument, electrical parts for automotive parts and machinery, etc. . The high precision tin phosphorus bronze strip is an economical and most commonly used high precision elastic copper alloy material.

5.High precision beryllium bronze strip

QBE2(C17200) QBE1.7(C17000) QBe0.4-1.8(C17510) . High precision beryllium bronze strip is a kind of malleable and castable alloy, which is a copper base alloy strengthened by age precipitation. After quenching and aging treatment, it has high strength, hardness, elastic limit, good stability, corrosion resistance, wear resistance, fatigue resistance, low temperature resistance, non-magnetism, good conductivity and thermal conductivity, and no spark on impact. Beryllium copper is basically divided into high strength and high elasticity beryllium copper alloy (beryllium content 1.6%-2.1%) and high conductivity copper-beryllium alloy (beryllium content 0.2%-0.7%) .

Beryllium Bronze Strip with high precision is used as an irreplaceable elastic element material in the industries of electronics, aerospace, aviation and weapons, used for manufacturing elastic components, various wear-resistant parts, bearings and bushings working at high speed, high pressure and high temperature, nose instrument parts, diaphragm, bellows, contact bridge, miniature switch; Biomedical, Navigational Instruments, magnetic sensor shells, seismometers, ultrasonic vibration energy detector springs, and shock-free safety tools for use in chemical, mining, and oil refineries, as well as various deep-drawing components.

6.High precision copper Strip T2(C1100)

High-precision copper strip is a rose-red surface of the metal, also known as pure copper or red copper, copper strip may not be pure copper, it contains 99. 9% copper is sometimes added with a small amount of deoxidizing elements or other elements to improve the material properties and properties, so that it has high thermoelectric conductivity, workability, ductility, corrosion resistance and weather resistance.

High precision copper strip is mainly used to make generator, Busbar, cable, switch device, transformer and other electrical equipment and heat exchanger, pipe, flat plate collector of solar thermal collector device and so on.

7.Three main series of Copper Strip for lead frame

CU-FE-P, cu-ni-si and cu-ming-zr alloys. C7025 is one of the representative cu-ni-si alloys. Both C7025 and C194 are copper alloys with high strength and high performance. Especially at the last stage of the alloy manufacturing process, temperature aging treatment is applied. This effect is like calendering again, making the material harder and stronger, while increasing the conductivity and elongation, which is especially true for thin electronic materials. The most famous Corson alloy is the C7025. Very suitable for automotive terminal and IC wire frame materials. 

Source: Tongxinbao

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