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88-Silver 12-Tin-Oxide Electrical Contact Alloy

88-silver 12-tin-oxide is a precious metal alloy formulated for use in electrical contacts. It can have the highest ductility among precious metal electrical contact alloys. In addition, it can have a moderately low tensile strength and a moderately high electrical conductivity.

The properties of 88-silver 12-tin-oxide include two common variations. This page shows summary ranges across both of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare 88-silver 12-tin-oxide to: precious metal electrical contact alloys (top), all alloys in the same category (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.

Mechanical Properties

Elongation at Break

9.0 to 37 %

Shear Strength

150 to 160 MPa 22 to 24 x 103 psi

Tensile Strength: Ultimate (UTS)

230 to 280 MPa 33 to 40 x 103 psi

Tensile Strength: Yield (Proof)

110 to 260 MPa 16 to 38 x 103 psi

Other Material Properties

Electrical Conductivity: Equal Volume

84 to 86 % IACS

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

24 to 70 MJ/m3

Followup Questions

Further Reading

ASTM B844: Standard Guide for Silver-Tin Oxide Contact Material