TM06 Mill Hardened C72900 Copper-Nickel
TM06 C72900 copper-nickel is C72900 copper-nickel in the TM06 (mill hardened to extra-spring) temper. It has the second highest strength compared to the other variants of C72900 copper-nickel. The graph bars on the material properties cards below compare TM06 C72900 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 18 x 106 psi
Elongation at Break
8.0 %
Poisson's Ratio
0.34
Shear Modulus
45 GPa 6.6 x 106 psi
Shear Strength
600 MPa 87 x 103 psi
Tensile Strength: Ultimate (UTS)
1010 MPa 150 x 103 psi
Tensile Strength: Yield (Proof)
920 MPa 130 x 103 psi
Thermal Properties
Latent Heat of Fusion
210 J/g
Maximum Temperature: Mechanical
210 °C 400 °F
Melting Completion (Liquidus)
1120 °C 2040 °F
Melting Onset (Solidus)
950 °C 1740 °F
Specific Heat Capacity
380 J/kg-K 0.091 BTU/lb-°F
Thermal Conductivity
29 W/m-K 17 BTU/h-ft-°F
Thermal Expansion
17 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
7.8 % IACS
Electrical Conductivity: Equal Weight (Specific)
8.0 % IACS
Otherwise Unclassified Properties
Base Metal Price
39 % relative
Density
8.8 g/cm3 550 lb/ft3
Embodied Carbon
4.6 kg CO2/kg material
Embodied Energy
72 MJ/kg 31 x 103 BTU/lb
Embodied Water
360 L/kg 43 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
79 MJ/m3
Resilience: Unit (Modulus of Resilience)
3490 kJ/m3
Stiffness to Weight: Axial
7.6 points
Stiffness to Weight: Bending
19 points
Strength to Weight: Axial
32 points
Strength to Weight: Bending
26 points
Thermal Diffusivity
8.6 mm2/s
Thermal Shock Resistance
36 points
Alloy Composition
| Cu | 74.1 to 78 | |
| Ni | 14.5 to 15.5 | |
| Sn | 7.5 to 8.5 | |
| Fe | 0 to 0.5 | |
| Zn | 0 to 0.5 | |
| Mn | 0 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.