EN 1.4020 Stainless Steel vs. EN 1.7321 Steel
Both EN 1.4020 stainless steel and EN 1.7321 steel are iron alloys. They have 69% of their average alloy composition in common. There are 21 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 1.4020 stainless steel and the bottom bar is EN 1.7321 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 190 to 340 | |
| 150 to 170 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 77 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 770 to 1130 | |
| 490 to 1460 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 890 | |
| 410 |
| Melting Completion (Liquidus), °C | 1390 | |
| 1460 |
| Melting Onset (Solidus), °C | 1350 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 470 |
| Thermal Expansion, µm/m-K | 17 | |
| 13 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 11 | |
| 2.5 |
| Density, g/cm3 | 7.6 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 2.5 | |
| 1.5 |
| Embodied Energy, MJ/kg | 37 | |
| 20 |
| Embodied Water, L/kg | 150 | |
| 50 |
Common Calculations
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 28 to 41 | |
| 17 to 52 |
| Strength to Weight: Bending, points | 25 to 32 | |
| 18 to 36 |
| Thermal Shock Resistance, points | 16 to 23 | |
| 14 to 43 |
Alloy Composition
| Carbon (C), % | 0 to 0.15 | |
| 0.17 to 0.23 |
| Chromium (Cr), % | 16.5 to 19 | |
| 0.3 to 0.6 |
| Copper (Cu), % | 0 | |
| 0 to 0.25 |
| Iron (Fe), % | 62.8 to 71.8 | |
| 97.1 to 98.4 |
| Manganese (Mn), % | 11 to 14 | |
| 0.7 to 1.0 |
| Molybdenum (Mo), % | 0 | |
| 0.4 to 0.5 |
| Nickel (Ni), % | 0.5 to 2.5 | |
| 0 |
| Nitrogen (N), % | 0.2 to 0.45 | |
| 0 |
| Phosphorus (P), % | 0 to 0.045 | |
| 0 to 0.025 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 0.3 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.025 |