EN 1.7725 Steel vs. EN 1.4020 Stainless Steel
Both EN 1.7725 steel and EN 1.4020 stainless steel are iron alloys. They have 70% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.
For each property being compared, the top bar is EN 1.7725 steel and the bottom bar is EN 1.4020 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 250 to 300 | |
| 190 to 340 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 14 | |
| 13 to 34 |
| Fatigue Strength, MPa | 390 to 550 | |
| 340 to 540 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 73 | |
| 77 |
| Tensile Strength: Ultimate (UTS), MPa | 830 to 1000 | |
| 770 to 1130 |
| Tensile Strength: Yield (Proof), MPa | 610 to 860 | |
| 430 to 950 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 280 |
| Maximum Temperature: Mechanical, °C | 440 | |
| 890 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1390 |
| Melting Onset (Solidus), °C | 1420 | |
| 1350 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Expansion, µm/m-K | 13 | |
| 17 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.9 | |
| 11 |
| Density, g/cm3 | 7.8 | |
| 7.6 |
| Embodied Carbon, kg CO2/kg material | 1.8 | |
| 2.5 |
| Embodied Energy, MJ/kg | 24 | |
| 37 |
| Embodied Water, L/kg | 54 | |
| 150 |
Common Calculations
| PREN (Pitting Resistance) | 2.8 | |
| 23 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 to 130 | |
| 140 to 220 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 980 to 1940 | |
| 460 to 2290 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 29 to 35 | |
| 28 to 41 |
| Strength to Weight: Bending, points | 25 to 28 | |
| 25 to 32 |
| Thermal Shock Resistance, points | 24 to 29 | |
| 16 to 23 |
Alloy Composition
| Carbon (C), % | 0.27 to 0.34 | |
| 0 to 0.15 |
| Chromium (Cr), % | 1.3 to 1.7 | |
| 16.5 to 19 |
| Iron (Fe), % | 95.7 to 97.5 | |
| 62.8 to 71.8 |
| Manganese (Mn), % | 0.6 to 1.0 | |
| 11 to 14 |
| Molybdenum (Mo), % | 0.3 to 0.5 | |
| 0 |
| Nickel (Ni), % | 0 | |
| 0.5 to 2.5 |
| Nitrogen (N), % | 0 | |
| 0.2 to 0.45 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 to 0.045 |
| Silicon (Si), % | 0 to 0.6 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.030 |
| Vanadium (V), % | 0.050 to 0.15 | |
| 0 |