Quarter-Hard 85-Silver 15-Nickel Alloy
Quarter-hard 85-silver 15-nickel is 85-silver 15-nickel in the quarter-hard temper. The graph bars on the material properties cards below compare quarter-hard 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
0.36
Shear Modulus
32 GPa 4.7 x 106 psi
Tensile Strength: Ultimate (UTS)
370 MPa 54 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
Density
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
10 points
Strength to Weight: Bending
11 points
Thermal Shock Resistance
16 points
Alloy Composition
| Ag | 84 to 86 | |
| Ni | 13.8 to 16 | |
| res. | 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