EN 1.7725 Steel vs. EN 1.4371 Stainless Steel
Both EN 1.7725 steel and EN 1.4371 stainless steel are iron alloys. They have 73% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, 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 1.4371 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 250 to 300 | |
| 220 to 230 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 14 | |
| 45 to 51 |
| Fatigue Strength, MPa | 390 to 550 | |
| 290 to 340 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 73 | |
| 77 |
| Tensile Strength: Ultimate (UTS), MPa | 830 to 1000 | |
| 740 to 750 |
| Tensile Strength: Yield (Proof), MPa | 610 to 860 | |
| 320 to 340 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 280 |
| Maximum Temperature: Mechanical, °C | 440 | |
| 880 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1410 |
| Melting Onset (Solidus), °C | 1420 | |
| 1370 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Conductivity, W/m-K | 39 | |
| 15 |
| Thermal Expansion, µm/m-K | 13 | |
| 17 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.4 | |
| 2.5 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.6 | |
| 2.9 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.9 | |
| 12 |
| Density, g/cm3 | 7.8 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 1.8 | |
| 2.6 |
| Embodied Energy, MJ/kg | 24 | |
| 38 |
| Embodied Water, L/kg | 54 | |
| 140 |
Common Calculations
| PREN (Pitting Resistance) | 2.8 | |
| 20 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 to 130 | |
| 270 to 310 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 980 to 1940 | |
| 250 to 300 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 29 to 35 | |
| 27 |
| Strength to Weight: Bending, points | 25 to 28 | |
| 24 |
| Thermal Diffusivity, mm2/s | 11 | |
| 4.0 |
| Thermal Shock Resistance, points | 24 to 29 | |
| 16 |
Alloy Composition
| Carbon (C), % | 0.27 to 0.34 | |
| 0 to 0.030 |
| Chromium (Cr), % | 1.3 to 1.7 | |
| 16 to 17.5 |
| Copper (Cu), % | 0 | |
| 0 to 1.0 |
| Iron (Fe), % | 95.7 to 97.5 | |
| 66.7 to 74.4 |
| Manganese (Mn), % | 0.6 to 1.0 | |
| 6.0 to 8.0 |
| Molybdenum (Mo), % | 0.3 to 0.5 | |
| 0 |
| Nickel (Ni), % | 0 | |
| 3.5 to 5.5 |
| Nitrogen (N), % | 0 | |
| 0.15 to 0.25 |
| 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 0.015 |
| Vanadium (V), % | 0.050 to 0.15 | |
| 0 |