C67400 Bronze vs. C37700 Brass
Both C67400 bronze and C37700 brass are copper alloys. They have a moderately high 95% of their average alloy composition in common.
For each property being compared, the top bar is C67400 bronze and the bottom bar is C37700 brass.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 100 |
| Elongation at Break, % | 22 to 28 | |
| 40 |
| Poisson's Ratio | 0.31 | |
| 0.31 |
| Rockwell B Hardness | 78 to 85 | |
| 45 |
| Shear Modulus, GPa | 41 | |
| 39 |
| Shear Strength, MPa | 310 to 350 | |
| 270 |
| Tensile Strength: Ultimate (UTS), MPa | 480 to 610 | |
| 400 |
| Tensile Strength: Yield (Proof), MPa | 250 to 370 | |
| 160 |
Thermal Properties
| Latent Heat of Fusion, J/g | 190 | |
| 170 |
| Maximum Temperature: Mechanical, °C | 130 | |
| 120 |
| Melting Completion (Liquidus), °C | 890 | |
| 890 |
| Melting Onset (Solidus), °C | 870 | |
| 880 |
| Specific Heat Capacity, J/kg-K | 400 | |
| 380 |
| Thermal Conductivity, W/m-K | 100 | |
| 120 |
| Thermal Expansion, µm/m-K | 21 | |
| 21 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 23 | |
| 27 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 26 | |
| 30 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 23 | |
| 23 |
| Density, g/cm3 | 7.9 | |
| 8.1 |
| Embodied Carbon, kg CO2/kg material | 2.8 | |
| 2.6 |
| Embodied Energy, MJ/kg | 48 | |
| 45 |
| Embodied Water, L/kg | 330 | |
| 320 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 to 120 | |
| 130 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 300 to 660 | |
| 120 |
| Stiffness to Weight: Axial, points | 7.5 | |
| 7.1 |
| Stiffness to Weight: Bending, points | 20 | |
| 19 |
| Strength to Weight: Axial, points | 17 to 22 | |
| 14 |
| Strength to Weight: Bending, points | 17 to 20 | |
| 15 |
| Thermal Diffusivity, mm2/s | 32 | |
| 39 |
| Thermal Shock Resistance, points | 16 to 20 | |
| 13 |
Alloy Composition
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| Aluminum (Al), % | 0.5 to 2.0 | |
| 0 |
| Copper (Cu), % | 57 to 60 | |
| 58 to 61 |
| Iron (Fe), % | 0 to 0.35 | |
| 0 to 0.3 |
| Lead (Pb), % | 0 to 0.5 | |
| 1.5 to 2.5 |
| Manganese (Mn), % | 2.0 to 3.5 | |
| 0 |
| Nickel (Ni), % | 0 to 0.25 | |
| 0 |
| Silicon (Si), % | 0.5 to 1.5 | |
| 0 |
| Tin (Sn), % | 0 to 0.3 | |
| 0 |
| Zinc (Zn), % | 31.1 to 40 | |
| 35.7 to 40.5 |
| Residuals, % | 0 to 0.5 | |
| 0 to 0.5 |