EN 1.3551 Steel vs. S31730 Stainless Steel
Both EN 1.3551 steel and S31730 stainless 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 (12, in this case) are not shown.
For each property being compared, the top bar is EN 1.3551 steel and the bottom bar is S31730 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 220 | |
| 180 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 75 | |
| 77 |
| Tensile Strength: Ultimate (UTS), MPa | 720 | |
| 540 |
Thermal Properties
| Latent Heat of Fusion, J/g | 260 | |
| 290 |
| Maximum Temperature: Mechanical, °C | 530 | |
| 990 |
| Melting Completion (Liquidus), °C | 1490 | |
| 1430 |
| Melting Onset (Solidus), °C | 1450 | |
| 1390 |
| Specific Heat Capacity, J/kg-K | 460 | |
| 470 |
| Thermal Expansion, µm/m-K | 13 | |
| 16 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 9.0 | |
| 24 |
| Density, g/cm3 | 7.9 | |
| 8.0 |
| Embodied Carbon, kg CO2/kg material | 4.9 | |
| 4.6 |
| Embodied Energy, MJ/kg | 71 | |
| 63 |
| Embodied Water, L/kg | 82 | |
| 180 |
Common Calculations
| PREN (Pitting Resistance) | 18 | |
| 30 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 26 | |
| 19 |
| Strength to Weight: Bending, points | 23 | |
| 18 |
| Thermal Shock Resistance, points | 21 | |
| 12 |
Alloy Composition
| Carbon (C), % | 0.77 to 0.85 | |
| 0 to 0.030 |
| Chromium (Cr), % | 3.9 to 4.3 | |
| 17 to 19 |
| Copper (Cu), % | 0 to 0.3 | |
| 4.0 to 5.0 |
| Iron (Fe), % | 88.8 to 91.1 | |
| 52.4 to 61 |
| Manganese (Mn), % | 0.15 to 0.35 | |
| 0 to 2.0 |
| Molybdenum (Mo), % | 4.0 to 4.5 | |
| 3.0 to 4.0 |
| Nickel (Ni), % | 0 | |
| 15 to 16.5 |
| Nitrogen (N), % | 0 | |
| 0 to 0.045 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 0.4 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.010 |
| Tungsten (W), % | 0 to 0.25 | |
| 0 |
| Vanadium (V), % | 0.9 to 1.1 | |
| 0 |