Contact Assemblys are typically made from any metal with high electrical conductivity. However, in applications such as high-power equipment where mechanical wear is expected, a conductive metal may be used. Common electrical contact materials include:

• Silver
• Copper
• Gold
• Platinum
• Palladium
• Brass

When choosing the best Contact Assembly for your application, it is important to keep in mind the Four most important properties:

• Size
• Hardness
• Cycle Life
• Conductivity
• Current Load
• Corrosion Resistance

This measures how resistant materials are to various kinds of permanent deformations from an applied force. It is dependant on five factors:

• Ductility
• Elasticity
• Plasticity
• Toughness
• Tensile Strength

Corrosion resistance of electrical contacts refers to a material’s ability to resist chemical decay. Any material with little corrosion resistance will decay faster than ones with high resistance.

Conductivity refers to the measure of a materials ability to conduct or carry an electric current. You will see this as a percent of a copper standard (ex: 100% International Annealed Copper Standard or IACS) Silver, which has the highest conductivity, has an IACS of 105.

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