ASTM B817 Type I vs. S20910 Stainless Steel
ASTM B817 type I belongs to the titanium alloys classification, while S20910 stainless steel belongs to the iron alloys. There are 28 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 ASTM B817 type I and the bottom bar is S20910 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 100 | |
| 200 |
| Elongation at Break, % | 4.0 to 13 | |
| 14 to 39 |
| Fatigue Strength, MPa | 360 to 520 | |
| 310 to 460 |
| Poisson's Ratio | 0.32 | |
| 0.28 |
| Reduction in Area, % | 5.0 to 29 | |
| 56 to 62 |
| Shear Modulus, GPa | 40 | |
| 79 |
| Tensile Strength: Ultimate (UTS), MPa | 770 to 960 | |
| 780 to 940 |
| Tensile Strength: Yield (Proof), MPa | 700 to 860 | |
| 430 to 810 |
Thermal Properties
| Latent Heat of Fusion, J/g | 410 | |
| 300 |
| Maximum Temperature: Mechanical, °C | 340 | |
| 1080 |
| Melting Completion (Liquidus), °C | 1600 | |
| 1420 |
| Melting Onset (Solidus), °C | 1550 | |
| 1380 |
| Specific Heat Capacity, J/kg-K | 560 | |
| 480 |
| Thermal Conductivity, W/m-K | 7.1 | |
| 13 |
| Thermal Expansion, µm/m-K | 9.6 | |
| 16 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 36 | |
| 22 |
| Density, g/cm3 | 4.4 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 38 | |
| 4.8 |
| Embodied Energy, MJ/kg | 610 | |
| 68 |
| Embodied Water, L/kg | 200 | |
| 180 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 30 to 120 | |
| 120 to 260 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 2310 to 3540 | |
| 460 to 1640 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 35 | |
| 25 |
| Strength to Weight: Axial, points | 48 to 60 | |
| 28 to 33 |
| Strength to Weight: Bending, points | 42 to 49 | |
| 24 to 27 |
| Thermal Diffusivity, mm2/s | 2.9 | |
| 3.6 |
| Thermal Shock Resistance, points | 54 to 68 | |
| 17 to 21 |
Alloy Composition
| Aluminum (Al), % | 5.5 to 6.8 | |
| 0 |
| Carbon (C), % | 0 to 0.1 | |
| 0 to 0.060 |
| Chlorine (Cl), % | 0 to 0.2 | |
| 0 |
| Chromium (Cr), % | 0 | |
| 20.5 to 23.5 |
| Hydrogen (H), % | 0 to 0.015 | |
| 0 |
| Iron (Fe), % | 0 to 0.4 | |
| 52.1 to 62.1 |
| Manganese (Mn), % | 0 | |
| 4.0 to 6.0 |
| Molybdenum (Mo), % | 0 | |
| 1.5 to 3.0 |
| Nickel (Ni), % | 0 | |
| 11.5 to 13.5 |
| Niobium (Nb), % | 0 | |
| 0.1 to 0.3 |
| Nitrogen (N), % | 0 to 0.040 | |
| 0.2 to 0.4 |
| Oxygen (O), % | 0 to 0.3 | |
| 0 |
| Phosphorus (P), % | 0 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 0.1 | |
| 0 to 0.75 |
| Sodium (Na), % | 0 to 0.2 | |
| 0 |
| Sulfur (S), % | 0 | |
| 0 to 0.030 |
| Titanium (Ti), % | 87 to 91 | |
| 0 |
| Vanadium (V), % | 3.5 to 4.5 | |
| 0.1 to 0.3 |
| Residuals, % | 0 to 0.4 | |
| 0 |