ASTM B817 Type I vs. Grade 5 Titanium
Both ASTM B817 type I and grade 5 titanium are titanium alloys. Their average alloy composition is basically identical. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.
For each property being compared, the top bar is ASTM B817 type I and the bottom bar is grade 5 titanium.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 100 | |
| 110 |
| Elongation at Break, % | 4.0 to 13 | |
| 8.6 to 11 |
| Fatigue Strength, MPa | 360 to 520 | |
| 530 to 630 |
| Poisson's Ratio | 0.32 | |
| 0.32 |
| Reduction in Area, % | 5.0 to 29 | |
| 21 to 25 |
| Shear Modulus, GPa | 40 | |
| 40 |
| Tensile Strength: Ultimate (UTS), MPa | 770 to 960 | |
| 1000 to 1190 |
| Tensile Strength: Yield (Proof), MPa | 700 to 860 | |
| 910 to 1110 |
Thermal Properties
| Latent Heat of Fusion, J/g | 410 | |
| 410 |
| Maximum Temperature: Mechanical, °C | 340 | |
| 330 |
| Melting Completion (Liquidus), °C | 1600 | |
| 1610 |
| Melting Onset (Solidus), °C | 1550 | |
| 1650 |
| Specific Heat Capacity, J/kg-K | 560 | |
| 560 |
| Thermal Conductivity, W/m-K | 7.1 | |
| 6.8 |
| Thermal Expansion, µm/m-K | 9.6 | |
| 8.9 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 1.0 | |
| 1.0 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.0 | |
| 2.0 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 36 | |
| 36 |
| Density, g/cm3 | 4.4 | |
| 4.4 |
| Embodied Carbon, kg CO2/kg material | 38 | |
| 38 |
| Embodied Energy, MJ/kg | 610 | |
| 610 |
| Embodied Water, L/kg | 200 | |
| 200 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 30 to 120 | |
| 100 to 110 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 2310 to 3540 | |
| 3980 to 5880 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 35 | |
| 35 |
| Strength to Weight: Axial, points | 48 to 60 | |
| 62 to 75 |
| Strength to Weight: Bending, points | 42 to 49 | |
| 50 to 56 |
| Thermal Diffusivity, mm2/s | 2.9 | |
| 2.7 |
| Thermal Shock Resistance, points | 54 to 68 | |
| 76 to 91 |
Alloy Composition
| Aluminum (Al), % | 5.5 to 6.8 | |
| 5.5 to 6.8 |
| Carbon (C), % | 0 to 0.1 | |
| 0 to 0.080 |
| Chlorine (Cl), % | 0 to 0.2 | |
| 0 |
| Hydrogen (H), % | 0 to 0.015 | |
| 0 to 0.015 |
| Iron (Fe), % | 0 to 0.4 | |
| 0 to 0.4 |
| Nitrogen (N), % | 0 to 0.040 | |
| 0 to 0.050 |
| Oxygen (O), % | 0 to 0.3 | |
| 0 to 0.2 |
| Silicon (Si), % | 0 to 0.1 | |
| 0 |
| Sodium (Na), % | 0 to 0.2 | |
| 0 |
| Titanium (Ti), % | 87 to 91 | |
| 87.4 to 91 |
| Vanadium (V), % | 3.5 to 4.5 | |
| 3.5 to 4.5 |
| Yttrium (Y), % | 0 | |
| 0 to 0.0050 |
| Residuals, % | 0 | |
| 0 to 0.4 |