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CMW® ELKONIUM 23 silver, copper alloy

Category Metal , Nonferrous Metal , Precious Metal , Silver Alloy
Manufacturer CMW Inc.
Trade Name ELKONIUM
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF CMW® ELKONIUM 23 silver, copper alloy.pdf
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Material Notes:
Alloying copper into silver increases the hardness of the material, and its resistance to mechanical wear and deformation. The electrical and thermal conductivity remain relatively high, thus, the alloys retain good current switching characteristics. Corrosion resistance decreases as the copper content increases. Copper oxides and other films will increase the surface resistance of these materials. This will require higher closing forces, usually 2 ounces or more, and some wiping action to break through the films and establish good contact. Because of the oxidation tendency, the silver-copper alloys should be avoided in high temperature applications. The silver-copper alloy materials are ductile and can be made in almost all the same shape and size contacts as fine silver. Usually, they will show an economical advantage over fine silver.ELKONIUM® 23 alloy has a tarnish resistance almost as good as fine silver and is a little harder. In low force devices, which have high inrush currents, this material has somewhat less tendency toward sticking than fine silver.Information provided by CMW Inc.
Physical Properties Metric English Comments
Density 10.5 g/cc
0.379 lb/in³
Mechanical Properties Metric English Comments
Hardness, Rockwell 15T 50
50
annealed
80
80
cold worked
Tensile Strength, Ultimate 207 MPa
30000 psi
annealed
345 MPa
50000 psi
cold worked
Elongation at Break 3.0 %
3.0 %
cold worked
37 %
37 %
annealed
Component Elements Properties Metric English Comments
Copper, Cu 1.5 %
1.5 %
Silver, Ag 98.5 %
98.5 %
Electrical Properties Metric English Comments
Electrical Resistivity 0.00000180 ohm-cm
0.00000180 ohm-cm
97 % IACS
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