C12900 Copper vs. C12500 Copper
Both C12900 copper and C12500 copper are copper alloys. Their average alloy composition is basically identical.
For each property being compared, the top bar is C12900 copper and the bottom bar is C12500 copper.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 120 | |
| 120 |
| Elongation at Break, % | 2.8 to 50 | |
| 1.5 to 50 |
| Poisson's Ratio | 0.34 | |
| 0.34 |
| Rockwell F Hardness | 40 to 95 | |
| 40 to 95 |
| Shear Modulus, GPa | 43 | |
| 43 |
| Shear Strength, MPa | 150 to 210 | |
| 150 to 220 |
| Tensile Strength: Ultimate (UTS), MPa | 220 to 420 | |
| 220 to 420 |
| Tensile Strength: Yield (Proof), MPa | 75 to 380 | |
| 75 to 390 |
Thermal Properties
| Latent Heat of Fusion, J/g | 210 | |
| 210 |
| Maximum Temperature: Mechanical, °C | 200 | |
| 200 |
| Melting Completion (Liquidus), °C | 1080 | |
| 1080 |
| Melting Onset (Solidus), °C | 1030 | |
| 1070 |
| Specific Heat Capacity, J/kg-K | 390 | |
| 390 |
| Thermal Conductivity, W/m-K | 380 | |
| 350 |
| Thermal Expansion, µm/m-K | 17 | |
| 17 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 98 | |
| 92 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 98 | |
| 93 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 32 | |
| 31 |
| Density, g/cm3 | 9.0 | |
| 8.9 |
| Embodied Carbon, kg CO2/kg material | 2.6 | |
| 2.6 |
| Embodied Energy, MJ/kg | 41 | |
| 41 |
| Embodied Water, L/kg | 330 | |
| 310 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 11 to 88 | |
| 5.6 to 88 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 24 to 640 | |
| 24 to 660 |
| Stiffness to Weight: Axial, points | 7.2 | |
| 7.2 |
| Stiffness to Weight: Bending, points | 18 | |
| 18 |
| Strength to Weight: Axial, points | 6.8 to 13 | |
| 6.9 to 13 |
| Strength to Weight: Bending, points | 9.1 to 14 | |
| 9.1 to 14 |
| Thermal Diffusivity, mm2/s | 110 | |
| 100 |
| Thermal Shock Resistance, points | 7.8 to 15 | |
| 7.8 to 15 |
Alloy Composition
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| Antimony (Sb), % | 0 to 0.0030 | |
| 0 to 0.0030 |
| Arsenic (As), % | 0 to 0.012 | |
| 0 to 0.012 |
| Bismuth (Bi), % | 0 to 0.0030 | |
| 0 to 0.0030 |
| Copper (Cu), % | 99.88 to 100 | |
| 99.88 to 100 |
| Lead (Pb), % | 0 to 0.0040 | |
| 0 to 0.0040 |
| Nickel (Ni), % | 0 to 0.050 | |
| 0 to 0.050 |
| Silver (Ag), % | 0 to 0.054 | |
| 0 |
| Tellurium (Te), % | 0 to 0.025 | |
| 0 to 0.025 |
| Residuals, % | 0 | |
| 0 to 0.3 |