S15500 Stainless Steel vs. Titanium 6-6-2
S15500 stainless steel belongs to the iron alloys classification, while titanium 6-6-2 belongs to the titanium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.
For each property being compared, the top bar is S15500 stainless steel and the bottom bar is titanium 6-6-2.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 120 |
| Elongation at Break, % | 6.8 to 16 | |
| 6.7 to 9.0 |
| Fatigue Strength, MPa | 350 to 650 | |
| 590 to 670 |
| Poisson's Ratio | 0.28 | |
| 0.32 |
| Reduction in Area, % | 17 to 40 | |
| 17 to 23 |
| Shear Modulus, GPa | 75 | |
| 44 |
| Shear Strength, MPa | 540 to 870 | |
| 670 to 800 |
| Tensile Strength: Ultimate (UTS), MPa | 890 to 1490 | |
| 1140 to 1370 |
| Tensile Strength: Yield (Proof), MPa | 590 to 1310 | |
| 1040 to 1230 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 400 |
| Maximum Temperature: Mechanical, °C | 820 | |
| 310 |
| Melting Completion (Liquidus), °C | 1430 | |
| 1610 |
| Melting Onset (Solidus), °C | 1380 | |
| 1560 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 540 |
| Thermal Conductivity, W/m-K | 17 | |
| 5.5 |
| Thermal Expansion, µm/m-K | 11 | |
| 9.4 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.2 | |
| 1.1 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.5 | |
| 2.1 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 13 | |
| 40 |
| Density, g/cm3 | 7.8 | |
| 4.8 |
| Embodied Carbon, kg CO2/kg material | 2.7 | |
| 29 |
| Embodied Energy, MJ/kg | 39 | |
| 470 |
| Embodied Water, L/kg | 130 | |
| 200 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 98 to 120 | |
| 89 to 99 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 34 |
| Strength to Weight: Axial, points | 32 to 53 | |
| 66 to 79 |
| Strength to Weight: Bending, points | 26 to 37 | |
| 50 to 57 |
| Thermal Diffusivity, mm2/s | 4.6 | |
| 2.1 |
| Thermal Shock Resistance, points | 30 to 50 | |
| 75 to 90 |
Alloy Composition
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| Aluminum (Al), % | 0 | |
| 5.0 to 6.0 |
| Carbon (C), % | 0 to 0.070 | |
| 0 to 0.050 |
| Chromium (Cr), % | 14 to 15.5 | |
| 0 |
| Copper (Cu), % | 2.5 to 4.5 | |
| 0.35 to 1.0 |
| Hydrogen (H), % | 0 | |
| 0 to 0.015 |
| Iron (Fe), % | 71.9 to 79.9 | |
| 0.35 to 1.0 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0 |
| Molybdenum (Mo), % | 0 | |
| 5.0 to 6.0 |
| Nickel (Ni), % | 3.5 to 5.5 | |
| 0 |
| Niobium (Nb), % | 0.15 to 0.45 | |
| 0 |
| Nitrogen (N), % | 0 | |
| 0 to 0.040 |
| Oxygen (O), % | 0 | |
| 0 to 0.2 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 |
| Tin (Sn), % | 0 | |
| 1.5 to 2.5 |
| Titanium (Ti), % | 0 | |
| 82.8 to 87.8 |
| Residuals, % | 0 | |
| 0 to 0.4 |