As Hot Rolled (M20) C74000 Nickel Silver
M20 C74000 nickel silver is C74000 nickel silver in the M20 (as hot rolled) condition. It has the lowest strength compared to the other variants of C74000 nickel silver. The graph bars on the material properties cards below compare M20 C74000 nickel silver to: wrought copper-nickels (top), all copper alloys (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
120 GPa 17 x 106 psi
Poisson's Ratio
0.32
Shear Modulus
44 GPa 6.5 x 106 psi
Tensile Strength: Ultimate (UTS)
380 MPa 55 x 103 psi
Thermal Properties
Latent Heat of Fusion
200 J/g
Maximum Temperature: Mechanical
180 °C 360 °F
Melting Completion (Liquidus)
990 °C 1820 °F
Melting Onset (Solidus)
950 °C 1730 °F
Specific Heat Capacity
390 J/kg-K 0.094 BTU/lb-°F
Thermal Expansion
18 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
40 % IACS
Electrical Conductivity: Equal Weight (Specific)
42 % IACS
Otherwise Unclassified Properties
Base Metal Price
30 % relative
Density
8.5 g/cm3 530 lb/ft3
Embodied Carbon
3.4 kg CO2/kg material
Embodied Energy
54 MJ/kg 23 x 103 BTU/lb
Embodied Water
310 L/kg 37 gal/lb
Common Calculations
Stiffness to Weight: Axial
7.7 points
Stiffness to Weight: Bending
19 points
Strength to Weight: Axial
13 points
Strength to Weight: Bending
14 points
Thermal Shock Resistance
13 points
Alloy Composition
| Cu | 69 to 73.5 | |
| Zn | 14.2 to 22 | |
| Ni | 9.0 to 11 | |
| Mn | 0 to 0.5 | |
| Fe | 0 to 0.25 | |
| Pb | 0 to 0.1 | |
| res. | 0 to 0.5 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Further Reading
ASTM B122: Standard Specification for Copper-Nickel-Tin Alloy, Copper-Nickel-Zinc Alloy (Nickel Silver), and Copper-Nickel Alloy Plate, Sheet, Strip, and Rolled Bar
ASM Specialty Handbook: Copper and Copper Alloys, J. R. Davis (editor), 2001
CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015