Annealed (OS025) C12900 Copper
OS025 C12900 copper is C12900 copper in the OS025 (annealed to 0.025mm grain size) temper. The graph bars on the material properties cards below compare OS025 C12900 copper to: wrought coppers (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
45 %
Fatigue Strength
76 MPa 11 x 103 psi
Poisson's Ratio
0.34
Rockwell F Hardness
45
Shear Modulus
43 GPa 6.3 x 106 psi
Shear Strength
160 MPa 23 x 103 psi
Tensile Strength: Ultimate (UTS)
230 MPa 34 x 103 psi
Tensile Strength: Yield (Proof)
82 MPa 12 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)
1030 °C 1880 °F
Specific Heat Capacity
390 J/kg-K 0.092 BTU/lb-°F
Thermal Conductivity
380 W/m-K 220 BTU/h-ft-°F
Thermal Expansion
17 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
98 % IACS
Electrical Conductivity: Equal Weight (Specific)
98 % IACS
Otherwise Unclassified Properties
Base Metal Price
32 % relative
Density
9.0 g/cm3 560 lb/ft3
Embodied Carbon
2.6 kg CO2/kg material
Embodied Energy
41 MJ/kg 18 x 103 BTU/lb
Embodied Water
330 L/kg 39 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
83 MJ/m3
Resilience: Unit (Modulus of Resilience)
29 kJ/m3
Stiffness to Weight: Axial
7.2 points
Stiffness to Weight: Bending
18 points
Strength to Weight: Axial
7.3 points
Strength to Weight: Bending
9.4 points
Thermal Diffusivity
110 mm2/s
Thermal Shock Resistance
8.3 points
Alloy Composition
| Cu | 99.88 to 100 | |
| Ag | 0 to 0.054 | |
| Ni | 0 to 0.050 | |
| Te | 0 to 0.025 | |
| As | 0 to 0.012 | |
| Pb | 0 to 0.0040 | |
| Bi | 0 to 0.0030 | |
| Sb | 0 to 0.0030 |
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