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COPPER TUNGSTEN / CHROMIUM COPPER

 

CuW80/CrCu contact This contact material has passed the type tests of SF6 circuit breakers of 40.5kV/40kA, 126kV/40kA and 252kV/40kA & 50kA in China.
CuW70/CrCu contact This contact material has passed the type tests of SF6 circuit breakers of 126kV/40kA in China.
CuW60/CrCu contact This contact material has passed the type tests of SF6 circuit breakers of 252kV/50kA in Japan.

Properties:

Contact materials

Density (g/cm3)
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Hardness HB(MPa)
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Resistivity (¦Ì¦¸.cm)
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Composition (wt.%)

Tensile Strength (MPa)
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Elongation (%)
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Remarks

CuW80/CrCu
CuW70/CrCu
CuW60/CrCu

-

1078
(CrCu: 10mm from the welding seam)

-

-

190
(At the welding seam)

-

Welded by electron beam welder

CuW80/CrCu
CuW70/CrCu
CuW60/CrCu

-

-

-

-

168
(At the welding seam)

-

Soldering



 

 

 

 
 
 
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