Grade 29 Titanium vs. S15500 Stainless Steel
Grade 29 titanium belongs to the titanium alloys classification, while S15500 stainless steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.
For each property being compared, the top bar is grade 29 titanium and the bottom bar is S15500 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 190 |
| Elongation at Break, % | 6.8 to 11 | |
| 6.8 to 16 |
| Fatigue Strength, MPa | 460 to 510 | |
| 350 to 650 |
| Poisson's Ratio | 0.32 | |
| 0.28 |
| Reduction in Area, % | 17 | |
| 17 to 40 |
| Shear Modulus, GPa | 40 | |
| 75 |
| Shear Strength, MPa | 550 to 560 | |
| 540 to 870 |
| Tensile Strength: Ultimate (UTS), MPa | 930 to 940 | |
| 890 to 1490 |
| Tensile Strength: Yield (Proof), MPa | 850 to 870 | |
| 590 to 1310 |
Thermal Properties
| Latent Heat of Fusion, J/g | 410 | |
| 280 |
| Maximum Temperature: Mechanical, °C | 340 | |
| 820 |
| Melting Completion (Liquidus), °C | 1610 | |
| 1430 |
| Melting Onset (Solidus), °C | 1560 | |
| 1380 |
| Specific Heat Capacity, J/kg-K | 560 | |
| 480 |
| Thermal Conductivity, W/m-K | 7.3 | |
| 17 |
| Thermal Expansion, µm/m-K | 9.3 | |
| 11 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 1.0 | |
| 2.2 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.0 | |
| 2.5 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 36 | |
| 13 |
| Density, g/cm3 | 4.5 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 39 | |
| 2.7 |
| Embodied Energy, MJ/kg | 640 | |
| 39 |
| Embodied Water, L/kg | 410 | |
| 130 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 62 to 100 | |
| 98 to 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 3420 to 3540 | |
| 890 to 4460 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 35 | |
| 25 |
| Strength to Weight: Axial, points | 58 to 59 | |
| 32 to 53 |
| Strength to Weight: Bending, points | 47 to 48 | |
| 26 to 37 |
| Thermal Diffusivity, mm2/s | 2.9 | |
| 4.6 |
| Thermal Shock Resistance, points | 68 to 69 | |
| 30 to 50 |
Alloy Composition
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| Aluminum (Al), % | 5.5 to 6.5 | |
| 0 |
| Carbon (C), % | 0 to 0.080 | |
| 0 to 0.070 |
| Chromium (Cr), % | 0 | |
| 14 to 15.5 |
| Copper (Cu), % | 0 | |
| 2.5 to 4.5 |
| Hydrogen (H), % | 0 to 0.015 | |
| 0 |
| Iron (Fe), % | 0 to 0.25 | |
| 71.9 to 79.9 |
| Manganese (Mn), % | 0 | |
| 0 to 1.0 |
| Nickel (Ni), % | 0 | |
| 3.5 to 5.5 |
| Niobium (Nb), % | 0 | |
| 0.15 to 0.45 |
| Nitrogen (N), % | 0 to 0.030 | |
| 0 |
| Oxygen (O), % | 0 to 0.13 | |
| 0 |
| Phosphorus (P), % | 0 | |
| 0 to 0.040 |
| Ruthenium (Ru), % | 0.080 to 0.14 | |
| 0 |
| Silicon (Si), % | 0 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 | |
| 0 to 0.030 |
| Titanium (Ti), % | 88 to 90.9 | |
| 0 |
| Vanadium (V), % | 3.5 to 4.5 | |
| 0 |
| Residuals, % | 0 to 0.4 | |
| 0 |