Grade 21 Titanium vs. C99400 Brass
Grade 21 titanium belongs to the titanium alloys classification, while C99400 brass belongs to the copper alloys. There are 22 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.
For each property being compared, the top bar is grade 21 titanium and the bottom bar is C99400 brass.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 140 | |
| 120 |
| Poisson's Ratio | 0.32 | |
| 0.34 |
| Shear Modulus, GPa | 51 | |
| 44 |
| Tensile Strength: Ultimate (UTS), MPa | 890 to 1340 | |
| 460 to 550 |
| Tensile Strength: Yield (Proof), MPa | 870 to 1170 | |
| 230 to 370 |
Thermal Properties
| Latent Heat of Fusion, J/g | 410 | |
| 230 |
| Maximum Temperature: Mechanical, °C | 310 | |
| 200 |
| Melting Completion (Liquidus), °C | 1740 | |
| 1070 |
| Melting Onset (Solidus), °C | 1690 | |
| 1020 |
| Specific Heat Capacity, J/kg-K | 500 | |
| 400 |
| Thermal Expansion, µm/m-K | 7.1 | |
| 17 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 60 | |
| 30 |
| Density, g/cm3 | 5.4 | |
| 8.7 |
| Embodied Carbon, kg CO2/kg material | 32 | |
| 2.8 |
| Embodied Energy, MJ/kg | 490 | |
| 45 |
| Embodied Water, L/kg | 180 | |
| 310 |
Common Calculations
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 2760 to 5010 | |
| 230 to 590 |
| Stiffness to Weight: Axial, points | 14 | |
| 7.5 |
| Stiffness to Weight: Bending, points | 32 | |
| 19 |
| Strength to Weight: Axial, points | 46 to 69 | |
| 15 to 17 |
| Strength to Weight: Bending, points | 38 to 50 | |
| 15 to 17 |
| Thermal Shock Resistance, points | 66 to 100 | |
| 16 to 19 |
Alloy Composition
| Aluminum (Al), % | 2.5 to 3.5 | |
| 0.5 to 2.0 |
| Carbon (C), % | 0 to 0.050 | |
| 0 |
| Copper (Cu), % | 0 | |
| 83.5 to 96.5 |
| Hydrogen (H), % | 0 to 0.015 | |
| 0 |
| Iron (Fe), % | 0 to 0.4 | |
| 1.0 to 3.0 |
| Lead (Pb), % | 0 | |
| 0 to 0.25 |
| Manganese (Mn), % | 0 | |
| 0 to 0.5 |
| Molybdenum (Mo), % | 14 to 16 | |
| 0 |
| Nickel (Ni), % | 0 | |
| 1.0 to 3.5 |
| 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 | |
| 0.5 to 2.0 |
| Titanium (Ti), % | 76 to 81.2 | |
| 0 |
| Zinc (Zn), % | 0 | |
| 0.5 to 5.0 |
| Residuals, % | 0 | |
| 0 to 0.3 |