TH04 Tempered C72800 Copper-Nickel
TH04 C72800 copper-nickel is C72800 copper-nickel in the TH04 (full-hard and precipitation heat treated) temper. It has the second highest strength compared to the other variants of C72800 copper-nickel.
The graph bars on the material properties cards below compare TH04 C72800 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
7.7 %
Poisson's Ratio
0.34
Rockwell C Hardness
40
Shear Modulus
44 GPa 6.4 x 106 psi
Shear Strength
730 MPa 110 x 103 psi
Tensile Strength: Ultimate (UTS)
1230 MPa 180 x 103 psi
Tensile Strength: Yield (Proof)
1150 MPa 170 x 103 psi
Thermal Properties
Latent Heat of Fusion
210 J/g
Maximum Temperature: Mechanical
200 °C 390 °F
Melting Completion (Liquidus)
1080 °C 1980 °F
Melting Onset (Solidus)
920 °C 1680 °F
Specific Heat Capacity
380 J/kg-K 0.091 BTU/lb-°F
Thermal Conductivity
55 W/m-K 32 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
38 % relative
Density
8.8 g/cm3 550 lb/ft3
Embodied Carbon
4.4 kg CO2/kg material
Embodied Energy
68 MJ/kg 29 x 103 BTU/lb
Embodied Water
360 L/kg 44 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
93 MJ/m3
Resilience: Unit (Modulus of Resilience)
5650 kJ/m3
Stiffness to Weight: Axial
7.4 points
Stiffness to Weight: Bending
19 points
Strength to Weight: Axial
39 points
Strength to Weight: Bending
29 points
Thermal Diffusivity
17 mm2/s
Thermal Shock Resistance
44 points
Alloy Composition
| Cu | 78.3 to 82.8 | |
| Ni | 9.5 to 10.5 | |
| Sn | 7.5 to 8.5 | |
| Zn | 0 to 1.0 | |
| Fe | 0 to 0.5 | |
| Nb | 0.1 to 0.3 | |
| Mn | 0.050 to 0.3 | |
| Mg | 0.0050 to 0.15 | |
| Al | 0 to 0.1 | |
| Si | 0 to 0.050 | |
| Sb | 0 to 0.020 | |
| Ti | 0 to 0.010 | |
| Pb | 0 to 0.0050 | |
| P | 0 to 0.0050 | |
| S | 0 to 0.0025 | |
| Bi | 0 to 0.0010 | |
| B | 0 to 0.0010 | |
| res. | 0 to 0.3 |
All values are % weight. Ranges represent what is permitted under applicable standards.