Grade 21 Titanium vs. C48500 Brass
Grade 21 titanium belongs to the titanium alloys classification, while C48500 brass belongs to the copper alloys. There are 27 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.
For each property being compared, the top bar is grade 21 titanium and the bottom bar is C48500 brass.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 140 | |
| 100 |
| Elongation at Break, % | 9.0 to 17 | |
| 13 to 40 |
| Poisson's Ratio | 0.32 | |
| 0.31 |
| Shear Modulus, GPa | 51 | |
| 39 |
| Shear Strength, MPa | 550 to 790 | |
| 250 to 300 |
| Tensile Strength: Ultimate (UTS), MPa | 890 to 1340 | |
| 400 to 500 |
| Tensile Strength: Yield (Proof), MPa | 870 to 1170 | |
| 160 to 320 |
Thermal Properties
| Latent Heat of Fusion, J/g | 410 | |
| 170 |
| Maximum Temperature: Mechanical, °C | 310 | |
| 120 |
| Melting Completion (Liquidus), °C | 1740 | |
| 900 |
| Melting Onset (Solidus), °C | 1690 | |
| 890 |
| Specific Heat Capacity, J/kg-K | 500 | |
| 380 |
| Thermal Conductivity, W/m-K | 7.5 | |
| 120 |
| Thermal Expansion, µm/m-K | 7.1 | |
| 21 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 60 | |
| 23 |
| Density, g/cm3 | 5.4 | |
| 8.1 |
| Embodied Carbon, kg CO2/kg material | 32 | |
| 2.7 |
| Embodied Energy, MJ/kg | 490 | |
| 46 |
| Embodied Water, L/kg | 180 | |
| 330 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 to 180 | |
| 56 to 140 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 2760 to 5010 | |
| 120 to 500 |
| Stiffness to Weight: Axial, points | 14 | |
| 7.1 |
| Stiffness to Weight: Bending, points | 32 | |
| 19 |
| Strength to Weight: Axial, points | 46 to 69 | |
| 14 to 17 |
| Strength to Weight: Bending, points | 38 to 50 | |
| 15 to 17 |
| Thermal Diffusivity, mm2/s | 2.8 | |
| 38 |
| Thermal Shock Resistance, points | 66 to 100 | |
| 13 to 17 |
Alloy Composition
| Aluminum (Al), % | 2.5 to 3.5 | |
| 0 |
| Carbon (C), % | 0 to 0.050 | |
| 0 |
| Copper (Cu), % | 0 | |
| 59 to 62 |
| Hydrogen (H), % | 0 to 0.015 | |
| 0 |
| Iron (Fe), % | 0 to 0.4 | |
| 0 to 0.1 |
| Lead (Pb), % | 0 | |
| 1.3 to 2.2 |
| Molybdenum (Mo), % | 14 to 16 | |
| 0 |
| Niobium (Nb), % | 2.2 to 3.2 | |
| 0 |
| Nitrogen (N), % | 0 to 0.030 | |
| 0 |
| Oxygen (O), % | 0 to 0.17 | |
| 0 |
| Silicon (Si), % | 0.15 to 0.25 | |
| 0 |
| Tin (Sn), % | 0 | |
| 0.5 to 1.0 |
| Titanium (Ti), % | 76 to 81.2 | |
| 0 |
| Zinc (Zn), % | 0 | |
| 34.3 to 39.2 |
| Residuals, % | 0 | |
| 0 to 0.4 |