S45000 Stainless Steel vs. Grade 20 Titanium
S45000 stainless steel belongs to the iron alloys classification, while grade 20 titanium belongs to the titanium alloys. There are 26 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.
For each property being compared, the top bar is S45000 stainless steel and the bottom bar is grade 20 titanium.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 120 |
| Elongation at Break, % | 6.8 to 14 | |
| 5.7 to 17 |
| Fatigue Strength, MPa | 330 to 650 | |
| 550 to 630 |
| Poisson's Ratio | 0.28 | |
| 0.32 |
| Reduction in Area, % | 22 to 50 | |
| 23 |
| Shear Modulus, GPa | 76 | |
| 47 |
| Shear Strength, MPa | 590 to 830 | |
| 560 to 740 |
| Tensile Strength: Ultimate (UTS), MPa | 980 to 1410 | |
| 900 to 1270 |
| Tensile Strength: Yield (Proof), MPa | 580 to 1310 | |
| 850 to 1190 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 400 |
| Maximum Temperature: Mechanical, °C | 840 | |
| 370 |
| Melting Completion (Liquidus), °C | 1440 | |
| 1660 |
| Melting Onset (Solidus), °C | 1390 | |
| 1600 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 520 |
| Thermal Expansion, µm/m-K | 11 | |
| 9.6 |
Otherwise Unclassified Properties
| Density, g/cm3 | 7.8 | |
| 5.0 |
| Embodied Carbon, kg CO2/kg material | 2.8 | |
| 52 |
| Embodied Energy, MJ/kg | 39 | |
| 860 |
| Embodied Water, L/kg | 130 | |
| 350 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 94 to 160 | |
| 71 to 150 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 850 to 4400 | |
| 2940 to 5760 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 33 |
| Strength to Weight: Axial, points | 35 to 50 | |
| 50 to 70 |
| Strength to Weight: Bending, points | 28 to 36 | |
| 41 to 52 |
| Thermal Shock Resistance, points | 33 to 47 | |
| 55 to 77 |
Alloy Composition
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| Aluminum (Al), % | 0 | |
| 3.0 to 4.0 |
| Carbon (C), % | 0 to 0.050 | |
| 0 to 0.050 |
| Chromium (Cr), % | 14 to 16 | |
| 5.5 to 6.5 |
| Copper (Cu), % | 1.3 to 1.8 | |
| 0 |
| Hydrogen (H), % | 0 | |
| 0 to 0.020 |
| Iron (Fe), % | 72.1 to 79.3 | |
| 0 to 0.3 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0 |
| Molybdenum (Mo), % | 0.5 to 1.0 | |
| 3.5 to 4.5 |
| Nickel (Ni), % | 5.0 to 7.0 | |
| 0 |
| Nitrogen (N), % | 0 | |
| 0 to 0.030 |
| Oxygen (O), % | 0 | |
| 0 to 0.12 |
| Palladium (Pd), % | 0 | |
| 0.040 to 0.080 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 |
| Titanium (Ti), % | 0 | |
| 71 to 77 |
| Vanadium (V), % | 0 | |
| 7.5 to 8.5 |
| Zirconium (Zr), % | 0 | |
| 3.5 to 4.5 |
| Residuals, % | 0 | |
| 0 to 0.4 |