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CMW® ELKONIUM 18 silver, copper, cadmium 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 18 silver, copper, cadmium alloy.pdf
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Material Notes:
The alloying of silver with cadmium produces materials with good arc extinction, good corrosion resistance and low contact resistance characteristics and provides them with good switching capability in AC circuits. They have low transfer characteristics in some DC applications. The alloying increases the strength and hardness, but substantially reduces the thermal and electrical conductivity and thus limits their current handling capability. The silver-cadmium alloy contacts are ductile materials and can be supplied in shapes and sizes similar to fine silver. ELKONIUM® 18 alloy, in the spring temper condition, has a proportional limit of 33,000 psi, a modulus of elasticity of 10 X 106 psi, good corrosion resistance and is frequently used as a current carrying spring contact.Information provided by CMW Inc.
Physical Properties Metric English Comments
Density 10.1 g/cc
0.365 lb/in³
Mechanical Properties Metric English Comments
Hardness, Rockwell 15T 72
72
annealed
85
85
cold worked
Tensile Strength, Ultimate 276 MPa
40000 psi
annealed
517 MPa
75000 psi
cold worked
Elongation at Break 3.0 %
3.0 %
cold worked
43 %
43 %
annealed
Component Elements Properties Metric English Comments
Cadmium, Cd 5.5 %
5.5 %
Copper, Cu 7.5 %
7.5 %
Nickel, Ni 0.20 %
0.20 %
Silver, Ag 86.8 %
86.8 %
Electrical Properties Metric English Comments
Electrical Resistivity 0.00000400 ohm-cm
0.00000400 ohm-cm
43 % IACS
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