As Hot Rolled (M20) C71500 Copper-Nickel
M20 C71500 copper-nickel is C71500 copper-nickel in the M20 (as hot rolled) condition. It has the lowest strength compared to the other variants of C71500 copper-nickel. The graph bars on the material properties cards below compare M20 C71500 copper-nickel 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
140 GPa 20 x 106 psi
Poisson's Ratio
0.33
Shear Modulus
52 GPa 7.5 x 106 psi
Tensile Strength: Ultimate (UTS)
380 MPa 55 x 103 psi
Thermal Properties
Latent Heat of Fusion
230 J/g
Maximum Temperature: Mechanical
260 °C 500 °F
Melting Completion (Liquidus)
1240 °C 2260 °F
Melting Onset (Solidus)
1170 °C 2140 °F
Specific Heat Capacity
400 J/kg-K 0.1 BTU/lb-°F
Thermal Conductivity
28 W/m-K 16 BTU/h-ft-°F
Thermal Expansion
16 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
4.6 % IACS
Electrical Conductivity: Equal Weight (Specific)
4.7 % IACS
Otherwise Unclassified Properties
Base Metal Price
41 % relative
Calomel Potential
-250 mV
Density
8.9 g/cm3 560 lb/ft3
Embodied Carbon
5.1 kg CO2/kg material
Embodied Energy
74 MJ/kg 32 x 103 BTU/lb
Embodied Water
280 L/kg 34 gal/lb
Common Calculations
Stiffness to Weight: Axial
8.6 points
Stiffness to Weight: Bending
19 points
Strength to Weight: Axial
12 points
Strength to Weight: Bending
13 points
Thermal Diffusivity
7.7 mm2/s
Thermal Shock Resistance
12 points
Alloy Composition
| Cu | 63.5 to 70.6 | |
| Ni | 29 to 33 | |
| Fe | 0.4 to 1.0 | |
| Mn | 0 to 1.0 | |
| Zn | 0 to 1.0 | |
| Pb | 0 to 0.050 | |
| 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
Copper: Its Trade, Manufacture, Use, and Environmental Status, Gunter Joseph, 2001
Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, ASM Handbook vol. 2, ASM International, 1993