TD02 Tempered C72700 Copper-Nickel
TD02 C72700 copper-nickel is C72700 copper-nickel in the TD02 (solution heat treated and cold worked to half-hard) temper. It has the lowest ductility compared to the other variants of C72700 copper-nickel.
The graph bars on the material properties cards below compare TD02 C72700 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
120 GPa 17 x 106 psi
Elongation at Break
4.0 %
Poisson's Ratio
0.34
Shear Modulus
44 GPa 6.4 x 106 psi
Shear Strength
370 MPa 53 x 103 psi
Tensile Strength: Ultimate (UTS)
630 MPa 92 x 103 psi
Tensile Strength: Yield (Proof)
580 MPa 84 x 103 psi
Thermal Properties
Latent Heat of Fusion
210 J/g
Maximum Temperature: Mechanical
200 °C 390 °F
Melting Completion (Liquidus)
1100 °C 2010 °F
Melting Onset (Solidus)
930 °C 1700 °F
Specific Heat Capacity
380 J/kg-K 0.091 BTU/lb-°F
Thermal Conductivity
54 W/m-K 31 BTU/h-ft-°F
Thermal Expansion
17 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
11 % IACS
Electrical Conductivity: Equal Weight (Specific)
11 % IACS
Otherwise Unclassified Properties
Base Metal Price
36 % relative
Density
8.8 g/cm3 550 lb/ft3
Embodied Carbon
4.0 kg CO2/kg material
Embodied Energy
62 MJ/kg 27 x 103 BTU/lb
Embodied Water
350 L/kg 42 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
20 to 380 MJ/m3
Resilience: Unit (Modulus of Resilience)
1420 kJ/m3
Stiffness to Weight: Axial
7.4 points
Stiffness to Weight: Bending
19 points
Strength to Weight: Axial
20 points
Strength to Weight: Bending
19 points
Thermal Diffusivity
16 mm2/s
Thermal Shock Resistance
22 points
Alloy Composition
| Cu | 82.1 to 86 | |
| Ni | 8.5 to 9.5 | |
| Sn | 5.5 to 6.5 | |
| Fe | 0 to 0.5 | |
| Zn | 0 to 0.5 | |
| Mn | 0.050 to 0.3 | |
| Mg | 0 to 0.15 | |
| Nb | 0 to 0.1 | |
| Pb | 0 to 0.020 | |
| res. | 0 to 0.3 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Further Reading
CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015