C81400 Copper vs. C87900 Brass
Both C81400 copper and C87900 brass are copper alloys. They have 66% of their average alloy composition in common.
For each property being compared, the top bar is C81400 copper and the bottom bar is C87900 brass.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 120 | |
| 110 |
| Elongation at Break, % | 11 | |
| 25 |
| Poisson's Ratio | 0.34 | |
| 0.31 |
| Rockwell B Hardness | 69 | |
| 70 |
| Shear Modulus, GPa | 41 | |
| 41 |
| Tensile Strength: Ultimate (UTS), MPa | 370 | |
| 480 |
| Tensile Strength: Yield (Proof), MPa | 250 | |
| 240 |
Thermal Properties
| Latent Heat of Fusion, J/g | 210 | |
| 190 |
| Maximum Temperature: Mechanical, °C | 200 | |
| 130 |
| Melting Completion (Liquidus), °C | 1090 | |
| 930 |
| Melting Onset (Solidus), °C | 1070 | |
| 900 |
| Specific Heat Capacity, J/kg-K | 390 | |
| 390 |
| Thermal Conductivity, W/m-K | 260 | |
| 120 |
| Thermal Expansion, µm/m-K | 17 | |
| 20 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 60 | |
| 15 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 61 | |
| 17 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 33 | |
| 24 |
| Density, g/cm3 | 8.9 | |
| 8.1 |
| Embodied Carbon, kg CO2/kg material | 2.8 | |
| 2.7 |
| Embodied Energy, MJ/kg | 45 | |
| 46 |
| Embodied Water, L/kg | 310 | |
| 320 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 36 | |
| 100 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 260 | |
| 270 |
| Stiffness to Weight: Axial, points | 7.3 | |
| 7.3 |
| Stiffness to Weight: Bending, points | 18 | |
| 20 |
| Strength to Weight: Axial, points | 11 | |
| 17 |
| Strength to Weight: Bending, points | 13 | |
| 17 |
| Thermal Diffusivity, mm2/s | 75 | |
| 37 |
| Thermal Shock Resistance, points | 13 | |
| 16 |
Alloy Composition
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| Aluminum (Al), % | 0 | |
| 0 to 0.15 |
| Antimony (Sb), % | 0 | |
| 0 to 0.050 |
| Arsenic (As), % | 0 | |
| 0 to 0.050 |
| Beryllium (Be), % | 0.020 to 0.1 | |
| 0 |
| Chromium (Cr), % | 0.6 to 1.0 | |
| 0 |
| Copper (Cu), % | 98.4 to 99.38 | |
| 63 to 69.2 |
| Iron (Fe), % | 0 | |
| 0 to 0.4 |
| Lead (Pb), % | 0 | |
| 0 to 0.25 |
| Manganese (Mn), % | 0 | |
| 0 to 0.15 |
| Nickel (Ni), % | 0 | |
| 0 to 0.5 |
| Phosphorus (P), % | 0 | |
| 0 to 0.010 |
| Silicon (Si), % | 0 | |
| 0.8 to 1.2 |
| Sulfur (S), % | 0 | |
| 0 to 0.050 |
| Tin (Sn), % | 0 | |
| 0 to 0.25 |
| Zinc (Zn), % | 0 | |
| 30 to 36 |
| Residuals, % | 0 to 0.5 | |
| 0 |