C38000 Brass vs. C47940 Brass
Both C38000 brass and C47940 brass are copper alloys. They have a moderately high 91% of their average alloy composition in common.
For each property being compared, the top bar is C38000 brass and the bottom bar is C47940 brass.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 100 | |
| 100 |
| Elongation at Break, % | 17 | |
| 14 to 34 |
| Poisson's Ratio | 0.31 | |
| 0.31 |
| Shear Modulus, GPa | 39 | |
| 40 |
| Shear Strength, MPa | 230 | |
| 250 to 310 |
| Tensile Strength: Ultimate (UTS), MPa | 380 | |
| 380 to 520 |
| Tensile Strength: Yield (Proof), MPa | 120 | |
| 160 to 390 |
Thermal Properties
| Latent Heat of Fusion, J/g | 170 | |
| 170 |
| Maximum Temperature: Mechanical, °C | 110 | |
| 130 |
| Melting Completion (Liquidus), °C | 800 | |
| 850 |
| Melting Onset (Solidus), °C | 760 | |
| 800 |
| Specific Heat Capacity, J/kg-K | 380 | |
| 380 |
| Thermal Conductivity, W/m-K | 110 | |
| 110 |
| Thermal Expansion, µm/m-K | 21 | |
| 20 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 22 | |
| 25 |
| Density, g/cm3 | 8.0 | |
| 8.2 |
| Embodied Carbon, kg CO2/kg material | 2.7 | |
| 2.8 |
| Embodied Energy, MJ/kg | 46 | |
| 47 |
| Embodied Water, L/kg | 330 | |
| 330 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 50 | |
| 68 to 100 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 74 | |
| 120 to 740 |
| Stiffness to Weight: Axial, points | 7.1 | |
| 7.1 |
| Stiffness to Weight: Bending, points | 19 | |
| 19 |
| Strength to Weight: Axial, points | 13 | |
| 13 to 17 |
| Strength to Weight: Bending, points | 14 | |
| 14 to 17 |
| Thermal Diffusivity, mm2/s | 37 | |
| 36 |
| Thermal Shock Resistance, points | 13 | |
| 13 to 17 |
Alloy Composition
| Aluminum (Al), % | 0 to 0.5 | |
| 0 |
| Copper (Cu), % | 55 to 60 | |
| 63 to 66 |
| Iron (Fe), % | 0 to 0.35 | |
| 0.1 to 1.0 |
| Lead (Pb), % | 1.5 to 2.5 | |
| 1.0 to 2.0 |
| Nickel (Ni), % | 0 | |
| 0.1 to 0.5 |
| Tin (Sn), % | 0 to 0.3 | |
| 1.2 to 2.0 |
| Zinc (Zn), % | 35.9 to 43.5 | |
| 28.1 to 34.6 |
| Residuals, % | 0 | |
| 0 to 0.4 |