S21800 Stainless Steel vs. Grade TDSiCr Steel
Both S21800 stainless steel and grade TDSiCr steel are iron alloys. They have 65% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.
For each property being compared, the top bar is S21800 stainless steel and the bottom bar is grade TDSiCr steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 210 | |
| 590 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Reduction in Area, % | 62 | |
| 48 |
| Shear Modulus, GPa | 75 | |
| 80 |
| Tensile Strength: Ultimate (UTS), MPa | 740 | |
| 1950 |
Thermal Properties
| Latent Heat of Fusion, J/g | 340 | |
| 270 |
| Maximum Temperature: Mechanical, °C | 900 | |
| 410 |
| Melting Completion (Liquidus), °C | 1360 | |
| 1440 |
| Melting Onset (Solidus), °C | 1310 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 500 | |
| 480 |
| Thermal Expansion, µm/m-K | 16 | |
| 13 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 15 | |
| 2.2 |
| Density, g/cm3 | 7.5 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 3.1 | |
| 1.5 |
| Embodied Energy, MJ/kg | 45 | |
| 20 |
| Embodied Water, L/kg | 150 | |
| 48 |
Common Calculations
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 26 | |
| 25 |
| Strength to Weight: Axial, points | 27 | |
| 70 |
| Strength to Weight: Bending, points | 24 | |
| 45 |
| Thermal Shock Resistance, points | 17 | |
| 58 |
Alloy Composition
| Carbon (C), % | 0 to 0.1 | |
| 0.5 to 0.6 |
| Chromium (Cr), % | 16 to 18 | |
| 0.5 to 0.8 |
| Copper (Cu), % | 0 | |
| 0 to 0.1 |
| Iron (Fe), % | 59.1 to 65.4 | |
| 96.6 to 97.8 |
| Manganese (Mn), % | 7.0 to 9.0 | |
| 0.5 to 0.9 |
| Nickel (Ni), % | 8.0 to 9.0 | |
| 0 |
| Nitrogen (N), % | 0.080 to 0.18 | |
| 0 |
| Phosphorus (P), % | 0 to 0.060 | |
| 0 to 0.025 |
| Silicon (Si), % | 3.5 to 4.5 | |
| 1.2 to 1.6 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.020 |