Guangdong Jiasheng Alloy Materials Co., Ltd:

Comparison of C17200&C17500&C17510&C18000

Source: 2023-11-08 10:03:58 
Beryllium Copper:
Beryllium copper is the electrode material with the highest hardness of copper alloy, including Be2.0% beryllium copper after solid solution and aging strengthening heat treatment, its ultimate strength and wear resistance can reach the level of high-strength alloy steel, therefore, for the need for high hardness and wear resistance of the electrode material commonly used beryllium copper.
The heat treatment process of beryllium copper is: 1050-1060K solid solution, 573-603K aging treatment 1-3h, beryllium steel after heat treatment of the highest hardness and wear resistance of the electrode material commonly used beryllium copper.
The heat treatment process of beryllium copper is: 1050-1060K aging treatment for 1-3h, the highest hardness of beryllium steel after heat treatment can reach HV=350 or more, but the conductivity at this time is low, usually about 17MS/"
The melting temperature of beryllium copper is low, when the temperature exceeds 1133K, there may be melting phenomenon, its softening temperature is also low, generally not greater than 673K, if the use temperature exceeds 823K, beryllium copper will be completely softened.
Due to this characteristic of beryllium copper, it is generally not used for spot welding and seam welding electrodes with small contact area and high welding surface temperature, otherwise its low electrical and thermal conductivity will cause serious adhesion. 

Beryllium cobalt copper:
Crepe cobalt copper containing Be0.4%-0.7%, Co2.4%-2.7% is one of the most important electrode copper alloys with high strength and medium conductivity, and plays an important role in resistance welding.
Beryllium cobalt copper is a heat treatment strengthened alloy, adding beryllium and cobalt to copper can form a metal compound with high melting point and high hardness, significantly improving the strength of copper, cobalt can also delay the decomposition of solid solution in the heat treatment process, and improve the precipitation hardening effect of the alloy.
The heat treatment process is generally: 1220K1-2h post-quenching, cold processing with 30%-40% compression rate, and then aging heat treatment at 720-750K for 2-3h, the highest hardness of beryllium cobalt copper after heat treatment can reach HV=250-270, and the electrical conductivity is between 23-29MS/m.
Beryllium nickel copper is a kind of alloy with beryllium cobalt copper performance is very similar, nickel beryllium copper containing Be0.2%-0.4, Ni1.4%-1.6%, Ti0.05%-0.15%, its hardness can reach HV-220-250, electrical conductivity is 26-29MS/, with beryllium nickel copper welding stainless steel and heat-resistant steel life is 5-8 times higher than chromium copper. 1/3 higher than beryllium cobalt copper.

Nickel silicon copper:
Nickel-silicon-copper is a heat-treatment enhanced alloy, with high strength and hardness, good wear resistance, is an alloy that can replace beryllium copper electrode materials and high performance, the alloy in the heat treatment due to nickel and silicon can form intermetallic compounds and present dispersed phase precipitation, so that the matrix strengthening, commonly used nickel-silicon-copper Ni2.4%-3.4. si0.6%-1.1%, after 1173K solid 1 solution quenching, 720K aging heat treatment has high mechanical properties and electrical conductivity.
Nickel chromium silicon copper is a copper alloy developed on the basis of nickel silicon copper, its performance is closer to beryllium cobalt copper, nickel chromium silicon copper contains Mi2.0%-3.0%, Si0.5%-0.8%,Cr0.2%-0.6%, after 1170K solution quenching, 50% cold deformation processing.


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