EN 1.7725 Steel vs. EN 1.7711 Steel
Both EN 1.7725 steel and EN 1.7711 steel are iron alloys. Their average alloy composition is basically identical. There are 31 material properties with values for both materials. Properties with values for just one material (2, 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 1.7711 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 250 to 300 | |
| 210 to 280 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 14 | |
| 16 to 22 |
| Fatigue Strength, MPa | 390 to 550 | |
| 290 to 520 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 830 to 1000 | |
| 690 to 930 |
| Tensile Strength: Yield (Proof), MPa | 610 to 860 | |
| 400 to 800 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 440 | |
| 430 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1460 |
| Melting Onset (Solidus), °C | 1420 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 39 | |
| 33 |
| Thermal Expansion, µm/m-K | 13 | |
| 11 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.4 | |
| 7.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.6 | |
| 8.5 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.9 | |
| 3.0 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.8 | |
| 2.3 |
| Embodied Energy, MJ/kg | 24 | |
| 32 |
| Embodied Water, L/kg | 54 | |
| 54 |
Common Calculations
| PREN (Pitting Resistance) | 2.8 | |
| 2.9 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 to 130 | |
| 130 to 140 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 980 to 1940 | |
| 430 to 1690 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 29 to 35 | |
| 24 to 33 |
| Strength to Weight: Bending, points | 25 to 28 | |
| 22 to 27 |
| Thermal Diffusivity, mm2/s | 11 | |
| 8.9 |
| Thermal Shock Resistance, points | 24 to 29 | |
| 24 to 32 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 0 to 0.015 |
| Carbon (C), % | 0.27 to 0.34 | |
| 0.36 to 0.44 |
| Chromium (Cr), % | 1.3 to 1.7 | |
| 0.9 to 1.2 |
| Iron (Fe), % | 95.7 to 97.5 | |
| 96 to 97.5 |
| Manganese (Mn), % | 0.6 to 1.0 | |
| 0.45 to 0.85 |
| Molybdenum (Mo), % | 0.3 to 0.5 | |
| 0.5 to 0.65 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 to 0.025 |
| Silicon (Si), % | 0 to 0.6 | |
| 0 to 0.4 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.030 |
| Vanadium (V), % | 0.050 to 0.15 | |
| 0.25 to 0.35 |