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CMW® ELKONIUM 217 Silver Cadmium Alloy

Category Metal , Nonferrous Metal , Precious Metal , Silver Alloy
Manufacturer CMW Inc.
Trade Name ELKONIUM
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF CMW® ELKONIUM 217 Silver 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® 217 alloy has good arc interruption and anti-welding characteristics and has been used in line starters, solenoid contactors, automotive starters and other power switching applications for many years. However, more recently it has been replaced with the higher conductivity silver-cadmium oxide alloys of CMW D54F, D55F, D54X and D55X.Information provided by CMW Inc.
Physical Properties Metric English Comments
Density 10.2 g/cc
0.368 lb/in³
Mechanical Properties Metric English Comments
Hardness, Rockwell 15T 51
51
annealed
83
83
cold worked
Tensile Strength, Ultimate 193 MPa
28000 psi
annealed
400 MPa
58000 psi
cold worked
Elongation at Break 5.0 %
5.0 %
cold worked
55 %
55 %
annealed
Component Elements Properties Metric English Comments
Cadmium, Cd 15 %
15 %
Silver, Ag 85 %
85 %
Electrical Properties Metric English Comments
Electrical Resistivity 0.00000490 ohm-cm
0.00000490 ohm-cm
35 % IACS
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