TH03 Tempered C70250 Copper
TH03 C70250 copper is C70250 copper in the TH03 (3/4-hard and precipitation heat treated) temper. It has the lowest strength compared to the other variants of C70250 copper. The graph bars on the material properties cards below compare TH03 C70250 copper 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
0.34
Shear Modulus
44 GPa 6.4 x 106 psi
Tensile Strength: Ultimate (UTS)
520 MPa 75 x 103 psi
Thermal Properties
Latent Heat of Fusion
220 J/g
Maximum Temperature: Mechanical
210 °C 400 °F
Melting Completion (Liquidus)
1100 °C 2000 °F
Melting Onset (Solidus)
1080 °C 1970 °F
Specific Heat Capacity
390 J/kg-K 0.094 BTU/lb-°F
Thermal Conductivity
170 W/m-K 98 BTU/h-ft-°F
Thermal Expansion
17 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
50 % IACS
Electrical Conductivity: Equal Weight (Specific)
51 % IACS
Otherwise Unclassified Properties
Base Metal Price
31 % relative
Density
8.9 g/cm3 550 lb/ft3
Embodied Carbon
2.9 kg CO2/kg material
Embodied Energy
45 MJ/kg 19 x 103 BTU/lb
Embodied Water
310 L/kg 37 gal/lb
Common Calculations
Stiffness to Weight: Axial
7.4 points
Stiffness to Weight: Bending
18 points
Strength to Weight: Axial
16 points
Strength to Weight: Bending
16 points
Thermal Diffusivity
49 mm2/s
Thermal Shock Resistance
18 points
Alloy Composition
| Cu | 92.7 to 97.5 | |
| Ni | 2.2 to 4.2 | |
| Si | 0.25 to 1.2 | |
| Zn | 0 to 1.0 | |
| Mg | 0.050 to 0.3 | |
| Mn | 0 to 0.1 | |
| 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 B422: Standard Specification for Copper-Aluminum-Silicon-Cobalt Alloy, Copper-Nickel-Silicon-Magnesium Alloy, Copper-Nickel-Silicon Alloy, Copper-Nickel-Aluminum-Magnesium Alloy, and Copper- Nickel-Tin Alloy Sheet and Strip
ASM Specialty Handbook: Copper and Copper Alloys, J. R. Davis (editor), 2001