EN 1.3961 Alloy vs. S21904 Stainless Steel
Both EN 1.3961 alloy and S21904 stainless steel are iron alloys. They have 70% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.
For each property being compared, the top bar is EN 1.3961 alloy and the bottom bar is S21904 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 31 | |
| 17 to 51 |
| Poisson's Ratio | 0.3 | |
| 0.28 |
| Shear Modulus, GPa | 72 | |
| 78 |
| Shear Strength, MPa | 300 | |
| 510 to 620 |
| Tensile Strength: Ultimate (UTS), MPa | 450 | |
| 700 to 1000 |
| Tensile Strength: Yield (Proof), MPa | 310 | |
| 390 to 910 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 290 |
| Melting Completion (Liquidus), °C | 1430 | |
| 1400 |
| Melting Onset (Solidus), °C | 1390 | |
| 1350 |
| Specific Heat Capacity, J/kg-K | 460 | |
| 480 |
| Thermal Expansion, µm/m-K | 1.3 | |
| 17 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 25 | |
| 15 |
| Density, g/cm3 | 8.2 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 4.8 | |
| 3.0 |
| Embodied Energy, MJ/kg | 66 | |
| 43 |
| Embodied Water, L/kg | 110 | |
| 160 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 130 | |
| 160 to 310 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 250 | |
| 380 to 2070 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 23 | |
| 25 |
| Strength to Weight: Axial, points | 15 | |
| 25 to 36 |
| Strength to Weight: Bending, points | 16 | |
| 23 to 29 |
| Thermal Shock Resistance, points | 130 | |
| 15 to 21 |
Alloy Composition
| Carbon (C), % | 0 to 0.050 | |
| 0 to 0.040 |
| Chromium (Cr), % | 0 to 0.25 | |
| 19 to 21.5 |
| Iron (Fe), % | 60.7 to 65 | |
| 59.5 to 67.4 |
| Manganese (Mn), % | 0 to 0.5 | |
| 8.0 to 10 |
| Molybdenum (Mo), % | 0 to 1.0 | |
| 0 |
| Nickel (Ni), % | 35 to 37 | |
| 5.5 to 7.5 |
| Nitrogen (N), % | 0 | |
| 0.15 to 0.4 |
| Phosphorus (P), % | 0 to 0.030 | |
| 0 to 0.045 |
| Silicon (Si), % | 0 to 0.5 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.020 | |
| 0 to 0.030 |