S31730 Stainless Steel vs. Grade Ti-Pd8A Titanium
S31730 stainless steel belongs to the iron alloys classification, while grade Ti-Pd8A titanium belongs to the titanium alloys. There are 25 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.
For each property being compared, the top bar is S31730 stainless steel and the bottom bar is grade Ti-Pd8A titanium.
Metric UnitsUS Customary Units
Mechanical Properties
Brinell Hardness | 180 | |
200 |
Elastic (Young's, Tensile) Modulus, GPa | 200 | |
110 |
Elongation at Break, % | 40 | |
13 |
Fatigue Strength, MPa | 170 | |
260 |
Poisson's Ratio | 0.28 | |
0.32 |
Shear Modulus, GPa | 77 | |
40 |
Tensile Strength: Ultimate (UTS), MPa | 540 | |
500 |
Tensile Strength: Yield (Proof), MPa | 200 | |
430 |
Thermal Properties
Latent Heat of Fusion, J/g | 290 | |
420 |
Maximum Temperature: Mechanical, °C | 990 | |
320 |
Melting Completion (Liquidus), °C | 1430 | |
1660 |
Melting Onset (Solidus), °C | 1390 | |
1610 |
Specific Heat Capacity, J/kg-K | 470 | |
540 |
Thermal Expansion, µm/m-K | 16 | |
8.7 |
Otherwise Unclassified Properties
Density, g/cm3 | 8.0 | |
4.5 |
Embodied Carbon, kg CO2/kg material | 4.6 | |
49 |
Embodied Energy, MJ/kg | 63 | |
840 |
Embodied Water, L/kg | 180 | |
520 |
Common Calculations
Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 170 | |
65 |
Resilience: Unit (Modulus of Resilience), kJ/m3 | 99 | |
880 |
Stiffness to Weight: Axial, points | 14 | |
13 |
Stiffness to Weight: Bending, points | 24 | |
35 |
Strength to Weight: Axial, points | 19 | |
31 |
Strength to Weight: Bending, points | 18 | |
31 |
Thermal Shock Resistance, points | 12 | |
39 |
Alloy Composition
Carbon (C), % | 0 to 0.030 | |
0 to 0.1 |
Chromium (Cr), % | 17 to 19 | |
0 |
Copper (Cu), % | 4.0 to 5.0 | |
0 |
Hydrogen (H), % | 0 | |
0 to 0.015 |
Iron (Fe), % | 52.4 to 61 | |
0 to 0.25 |
Manganese (Mn), % | 0 to 2.0 | |
0 |
Molybdenum (Mo), % | 3.0 to 4.0 | |
0 |
Nickel (Ni), % | 15 to 16.5 | |
0 to 0.050 |
Nitrogen (N), % | 0 to 0.045 | |
0 |
Oxygen (O), % | 0 | |
0 to 0.4 |
Palladium (Pd), % | 0 | |
0.12 to 0.3 |
Phosphorus (P), % | 0 to 0.040 | |
0 |
Silicon (Si), % | 0 to 1.0 | |
0 |
Sulfur (S), % | 0 to 0.010 | |
0 |
Titanium (Ti), % | 0 | |
98.8 to 99.9 |
Residuals, % | 0 | |
0 to 0.4 |