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Spring-Tempered 85-Silver 15-Nickel Alloy

Spring-tempered 85-silver 15-nickel is 85-silver 15-nickel in the spring temper. It has the highest strength compared to the other variants of 85-silver 15-nickel.

The graph bars on the material properties cards below compare spring-tempered 85-silver 15-nickel 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

Elastic (Young's, Tensile) Modulus

88 GPa 13 x 106 psi

Poisson's Ratio


Shear Modulus

32 GPa 4.7 x 106 psi

Tensile Strength: Ultimate (UTS)

470 MPa 68 x 103 psi

Thermal Properties

Latent Heat of Fusion

140 J/g

Melting Completion (Liquidus)

870 °C 1590 °F

Melting Onset (Solidus)

960 °C 1760 °F

Specific Heat Capacity

270 J/kg-K 0.064 BTU/lb-°F

Thermal Expansion

18 µm/m-K

Other Material Properties


10 g/cm3 640 lb/ft3

Electrical Conductivity: Equal Volume

86 % IACS

Electrical Conductivity: Equal Weight (Specific)

75 % IACS

Common Calculations

Stiffness to Weight: Axial

4.8 points

Stiffness to Weight: Bending

14 points

Strength to Weight: Axial

13 points

Strength to Weight: Bending

13 points

Thermal Shock Resistance

21 points

Alloy Composition

Silver (Ag)Ag 84 to 86
Nickel (Ni)Ni 13.8 to 16
Residualsres. 0 to 0.2

All values are % weight. Ranges represent what is permitted under applicable standards.

Followup Questions

Further Reading

ASTM B693: Standard Specification for Silver-Nickel Electrical Contact Materials