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Spring-Tempered 90-Silver 10-Nickel Alloy

Spring-tempered 90-silver 10-nickel is 90-silver 10-nickel in the spring temper. It has the highest strength compared to the other variants of 90-silver 10-nickel.

The graph bars on the material properties cards below compare spring-tempered 90-silver 10-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

82 GPa 12 x 106 psi

Poisson's Ratio


Shear Modulus

30 GPa 4.4 x 106 psi

Tensile Strength: Ultimate (UTS)

420 MPa 61 x 103 psi

Thermal Properties

Latent Heat of Fusion

130 J/g

Melting Completion (Liquidus)

840 °C 1540 °F

Melting Onset (Solidus)

960 °C 1760 °F

Specific Heat Capacity

260 J/kg-K 0.061 BTU/lb-°F

Thermal Expansion

19 µm/m-K

Other Material Properties


10 g/cm3 640 lb/ft3

Electrical Conductivity: Equal Volume

90 % IACS

Electrical Conductivity: Equal Weight (Specific)

79 % IACS

Common Calculations

Stiffness to Weight: Axial

4.4 points

Stiffness to Weight: Bending

14 points

Strength to Weight: Axial

11 points

Strength to Weight: Bending

12 points

Thermal Shock Resistance

19 points

Alloy Composition

Silver (Ag)Ag 89 to 91
Nickel (Ni)Ni 8.8 to 11
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

CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015