Grade 18 Titanium vs. C99750 Brass
Grade 18 titanium belongs to the titanium alloys classification, while C99750 brass belongs to the copper alloys. There are 25 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.
For each property being compared, the top bar is grade 18 titanium and the bottom bar is C99750 brass.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 130 |
| Elongation at Break, % | 11 to 17 | |
| 20 to 30 |
| Poisson's Ratio | 0.32 | |
| 0.32 |
| Shear Modulus, GPa | 40 | |
| 48 |
| Tensile Strength: Ultimate (UTS), MPa | 690 to 980 | |
| 450 to 520 |
| Tensile Strength: Yield (Proof), MPa | 540 to 810 | |
| 220 to 280 |
Thermal Properties
| Latent Heat of Fusion, J/g | 410 | |
| 200 |
| Maximum Temperature: Mechanical, °C | 330 | |
| 160 |
| Melting Completion (Liquidus), °C | 1640 | |
| 840 |
| Melting Onset (Solidus), °C | 1590 | |
| 820 |
| Specific Heat Capacity, J/kg-K | 550 | |
| 410 |
| Thermal Expansion, µm/m-K | 9.9 | |
| 20 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 1.3 | |
| 2.0 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.7 | |
| 2.2 |
Otherwise Unclassified Properties
| Density, g/cm3 | 4.5 | |
| 8.1 |
| Embodied Carbon, kg CO2/kg material | 41 | |
| 3.1 |
| Embodied Energy, MJ/kg | 670 | |
| 51 |
| Embodied Water, L/kg | 270 | |
| 310 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 87 to 110 | |
| 87 to 110 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1380 to 3110 | |
| 190 to 300 |
| Stiffness to Weight: Axial, points | 13 | |
| 8.6 |
| Stiffness to Weight: Bending, points | 35 | |
| 21 |
| Strength to Weight: Axial, points | 43 to 61 | |
| 15 to 18 |
| Strength to Weight: Bending, points | 39 to 49 | |
| 16 to 18 |
| Thermal Shock Resistance, points | 47 to 67 | |
| 13 to 15 |
Alloy Composition
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| Aluminum (Al), % | 2.5 to 3.5 | |
| 0.25 to 3.0 |
| Carbon (C), % | 0 to 0.080 | |
| 0 |
| Copper (Cu), % | 0 | |
| 55 to 61 |
| Hydrogen (H), % | 0 to 0.015 | |
| 0 |
| Iron (Fe), % | 0 to 0.25 | |
| 0 to 1.0 |
| Lead (Pb), % | 0 | |
| 0.5 to 2.5 |
| Manganese (Mn), % | 0 | |
| 17 to 23 |
| Nickel (Ni), % | 0 | |
| 0 to 5.0 |
| Nitrogen (N), % | 0 to 0.030 | |
| 0 |
| Oxygen (O), % | 0 to 0.15 | |
| 0 |
| Palladium (Pd), % | 0.040 to 0.080 | |
| 0 |
| Titanium (Ti), % | 92.5 to 95.5 | |
| 0 |
| Vanadium (V), % | 2.0 to 3.0 | |
| 0 |
| Zinc (Zn), % | 0 | |
| 17 to 23 |
| Residuals, % | 0 to 0.4 | |
| 0 to 0.3 |