EN 1.1203 Steel vs. S31803 Stainless Steel
Both EN 1.1203 steel and S31803 stainless steel are iron alloys. They have 69% of their average alloy composition in common. There are 31 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 EN 1.1203 steel and the bottom bar is S31803 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 200 to 230 | |
| 260 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 12 to 15 | |
| 29 |
| Fatigue Strength, MPa | 210 to 310 | |
| 370 |
| Poisson's Ratio | 0.29 | |
| 0.27 |
| Shear Modulus, GPa | 72 | |
| 80 |
| Shear Strength, MPa | 420 to 480 | |
| 460 |
| Tensile Strength: Ultimate (UTS), MPa | 690 to 780 | |
| 710 |
| Tensile Strength: Yield (Proof), MPa | 340 to 480 | |
| 500 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 300 |
| Maximum Temperature: Mechanical, °C | 400 | |
| 1060 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1450 |
| Melting Onset (Solidus), °C | 1420 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Conductivity, W/m-K | 48 | |
| 16 |
| Thermal Expansion, µm/m-K | 12 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.2 | |
| 2.2 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.3 | |
| 2.5 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.1 | |
| 17 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 3.6 |
| Embodied Energy, MJ/kg | 19 | |
| 49 |
| Embodied Water, L/kg | 47 | |
| 160 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 69 to 100 | |
| 180 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 310 to 610 | |
| 630 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 25 to 28 | |
| 25 |
| Strength to Weight: Bending, points | 22 to 24 | |
| 23 |
| Thermal Diffusivity, mm2/s | 13 | |
| 4.3 |
| Thermal Shock Resistance, points | 22 to 25 | |
| 20 |
Alloy Composition
| Carbon (C), % | 0.52 to 0.6 | |
| 0 to 0.030 |
| Chromium (Cr), % | 0 to 0.4 | |
| 21 to 23 |
| Iron (Fe), % | 97.1 to 98.9 | |
| 63.7 to 71.9 |
| Manganese (Mn), % | 0.6 to 0.9 | |
| 0 to 2.0 |
| Molybdenum (Mo), % | 0 to 0.1 | |
| 2.5 to 3.5 |
| Nickel (Ni), % | 0 to 0.4 | |
| 4.5 to 6.5 |
| Nitrogen (N), % | 0 | |
| 0.080 to 0.2 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 to 0.030 |
| Silicon (Si), % | 0 to 0.4 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.035 | |
| 0 to 0.020 |