S15500 Stainless Steel vs. Grade 23 Titanium
S15500 stainless steel belongs to the iron alloys classification, while grade 23 titanium belongs to the titanium alloys. There are 32 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 S15500 stainless steel and the bottom bar is grade 23 titanium.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 110 |
| Elongation at Break, % | 6.8 to 16 | |
| 6.7 to 11 |
| Fatigue Strength, MPa | 350 to 650 | |
| 470 to 500 |
| Poisson's Ratio | 0.28 | |
| 0.32 |
| Reduction in Area, % | 17 to 40 | |
| 30 |
| Rockwell C Hardness | 27 to 46 | |
| 32 |
| Shear Modulus, GPa | 75 | |
| 40 |
| Shear Strength, MPa | 540 to 870 | |
| 540 to 570 |
| Tensile Strength: Ultimate (UTS), MPa | 890 to 1490 | |
| 930 to 940 |
| Tensile Strength: Yield (Proof), MPa | 590 to 1310 | |
| 850 to 870 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 410 |
| Maximum Temperature: Mechanical, °C | 820 | |
| 340 |
| Melting Completion (Liquidus), °C | 1430 | |
| 1610 |
| Melting Onset (Solidus), °C | 1380 | |
| 1560 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 560 |
| Thermal Conductivity, W/m-K | 17 | |
| 7.1 |
| Thermal Expansion, µm/m-K | 11 | |
| 9.4 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.2 | |
| 1.0 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.5 | |
| 2.0 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 13 | |
| 36 |
| Density, g/cm3 | 7.8 | |
| 4.4 |
| Embodied Carbon, kg CO2/kg material | 2.7 | |
| 38 |
| Embodied Energy, MJ/kg | 39 | |
| 610 |
| Embodied Water, L/kg | 130 | |
| 200 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 98 to 120 | |
| 61 to 100 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 890 to 4460 | |
| 3430 to 3560 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 35 |
| Strength to Weight: Axial, points | 32 to 53 | |
| 58 to 59 |
| Strength to Weight: Bending, points | 26 to 37 | |
| 48 |
| Thermal Diffusivity, mm2/s | 4.6 | |
| 2.9 |
| Thermal Shock Resistance, points | 30 to 50 | |
| 67 to 68 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 5.5 to 6.5 |
| Carbon (C), % | 0 to 0.070 | |
| 0 to 0.080 |
| Chromium (Cr), % | 14 to 15.5 | |
| 0 |
| Copper (Cu), % | 2.5 to 4.5 | |
| 0 |
| Hydrogen (H), % | 0 | |
| 0 to 0.013 |
| Iron (Fe), % | 71.9 to 79.9 | |
| 0 to 0.25 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0 |
| Nickel (Ni), % | 3.5 to 5.5 | |
| 0 |
| Niobium (Nb), % | 0.15 to 0.45 | |
| 0 |
| Nitrogen (N), % | 0 | |
| 0 to 0.030 |
| Oxygen (O), % | 0 | |
| 0 to 0.13 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 |
| Titanium (Ti), % | 0 | |
| 88.1 to 91 |
| Vanadium (V), % | 0 | |
| 3.5 to 4.5 |
| Residuals, % | 0 | |
| 0 to 0.4 |