Grade 19 Titanium vs. ASTM A372 Grade J Steel
Grade 19 titanium belongs to the titanium alloys classification, while ASTM A372 grade J steel belongs to the iron alloys. There are 28 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 19 titanium and the bottom bar is ASTM A372 grade J steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 120 | |
| 190 |
| Elongation at Break, % | 5.6 to 17 | |
| 17 to 22 |
| Fatigue Strength, MPa | 550 to 620 | |
| 310 to 570 |
| Poisson's Ratio | 0.32 | |
| 0.29 |
| Shear Modulus, GPa | 47 | |
| 73 |
| Shear Strength, MPa | 550 to 750 | |
| 410 to 630 |
| Tensile Strength: Ultimate (UTS), MPa | 890 to 1300 | |
| 650 to 1020 |
| Tensile Strength: Yield (Proof), MPa | 870 to 1170 | |
| 430 to 850 |
Thermal Properties
| Latent Heat of Fusion, J/g | 400 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 370 | |
| 420 |
| Melting Completion (Liquidus), °C | 1660 | |
| 1460 |
| Melting Onset (Solidus), °C | 1600 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 520 | |
| 470 |
| Thermal Conductivity, W/m-K | 6.2 | |
| 44 |
| Thermal Expansion, µm/m-K | 9.1 | |
| 13 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 45 | |
| 2.4 |
| Density, g/cm3 | 5.0 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 47 | |
| 1.5 |
| Embodied Energy, MJ/kg | 760 | |
| 20 |
| Embodied Water, L/kg | 230 | |
| 51 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 70 to 150 | |
| 130 to 170 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 3040 to 5530 | |
| 500 to 1930 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 33 | |
| 24 |
| Strength to Weight: Axial, points | 49 to 72 | |
| 23 to 36 |
| Strength to Weight: Bending, points | 41 to 53 | |
| 21 to 29 |
| Thermal Diffusivity, mm2/s | 2.4 | |
| 12 |
| Thermal Shock Resistance, points | 57 to 83 | |
| 19 to 30 |
Alloy Composition
| Aluminum (Al), % | 3.0 to 4.0 | |
| 0 |
| Carbon (C), % | 0 to 0.050 | |
| 0.35 to 0.5 |
| Chromium (Cr), % | 5.5 to 6.5 | |
| 0.8 to 1.2 |
| Hydrogen (H), % | 0 to 0.020 | |
| 0 |
| Iron (Fe), % | 0 to 0.3 | |
| 96.7 to 97.8 |
| Manganese (Mn), % | 0 | |
| 0.75 to 1.1 |
| Molybdenum (Mo), % | 3.5 to 4.5 | |
| 0.15 to 0.25 |
| Nitrogen (N), % | 0 to 0.030 | |
| 0 |
| Oxygen (O), % | 0 to 0.12 | |
| 0 |
| Phosphorus (P), % | 0 | |
| 0 to 0.015 |
| Silicon (Si), % | 0 | |
| 0.15 to 0.35 |
| Sulfur (S), % | 0 | |
| 0 to 0.010 |
| Titanium (Ti), % | 71.1 to 77 | |
| 0 |
| Vanadium (V), % | 7.5 to 8.5 | |
| 0 |
| Zirconium (Zr), % | 3.5 to 4.5 | |
| 0 |
| Residuals, % | 0 to 0.4 | |
| 0 |