C27400 Brass vs. Grade 21 Titanium
C27400 brass belongs to the copper alloys classification, while grade 21 titanium belongs to the titanium alloys. There are 22 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.
For each property being compared, the top bar is C27400 brass and the bottom bar is grade 21 titanium.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 140 |
| Poisson's Ratio | 0.31 | |
| 0.32 |
| Shear Modulus, GPa | 40 | |
| 51 |
| Tensile Strength: Ultimate (UTS), MPa | 370 to 650 | |
| 890 to 1340 |
Thermal Properties
| Latent Heat of Fusion, J/g | 170 | |
| 410 |
| Maximum Temperature: Mechanical, °C | 120 | |
| 310 |
| Melting Completion (Liquidus), °C | 920 | |
| 1740 |
| Melting Onset (Solidus), °C | 870 | |
| 1690 |
| Specific Heat Capacity, J/kg-K | 390 | |
| 500 |
| Thermal Conductivity, W/m-K | 120 | |
| 7.5 |
| Thermal Expansion, µm/m-K | 21 | |
| 7.1 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 23 | |
| 60 |
| Density, g/cm3 | 8.0 | |
| 5.4 |
| Embodied Carbon, kg CO2/kg material | 2.7 | |
| 32 |
| Embodied Energy, MJ/kg | 45 | |
| 490 |
| Embodied Water, L/kg | 320 | |
| 180 |
Common Calculations
| Stiffness to Weight: Axial, points | 7.2 | |
| 14 |
| Stiffness to Weight: Bending, points | 20 | |
| 32 |
| Strength to Weight: Axial, points | 13 to 23 | |
| 46 to 69 |
| Strength to Weight: Bending, points | 14 to 21 | |
| 38 to 50 |
| Thermal Diffusivity, mm2/s | 37 | |
| 2.8 |
| Thermal Shock Resistance, points | 12 to 22 | |
| 66 to 100 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 2.5 to 3.5 |
| Carbon (C), % | 0 | |
| 0 to 0.050 |
| Copper (Cu), % | 61 to 64 | |
| 0 |
| Hydrogen (H), % | 0 | |
| 0 to 0.015 |
| Iron (Fe), % | 0 to 0.1 | |
| 0 to 0.4 |
| Lead (Pb), % | 0 to 0.050 | |
| 0 |
| Molybdenum (Mo), % | 0 | |
| 14 to 16 |
| Niobium (Nb), % | 0 | |
| 2.2 to 3.2 |
| Nitrogen (N), % | 0 | |
| 0 to 0.030 |
| Oxygen (O), % | 0 | |
| 0 to 0.17 |
| Silicon (Si), % | 0 | |
| 0.15 to 0.25 |
| Titanium (Ti), % | 0 | |
| 76 to 81.2 |
| Zinc (Zn), % | 35.6 to 39 | |
| 0 |
| Residuals, % | 0 | |
| 0 to 0.4 |