EN 1.7725 Steel vs. EN 1.5662 Steel
Both EN 1.7725 steel and EN 1.5662 steel are iron alloys. They have a moderately high 91% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (5, 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 1.5662 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 250 to 300 | |
| 220 to 230 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 14 | |
| 20 |
| Fatigue Strength, MPa | 390 to 550 | |
| 380 to 450 |
| Impact Strength: V-Notched Charpy, J | 34 to 35 | |
| 91 to 130 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 830 to 1000 | |
| 740 to 750 |
| Tensile Strength: Yield (Proof), MPa | 610 to 860 | |
| 550 to 660 |
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 | |
| 1410 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Expansion, µm/m-K | 13 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.4 | |
| 8.7 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.6 | |
| 9.8 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.9 | |
| 7.5 |
| Density, g/cm3 | 7.8 | |
| 8.0 |
| Embodied Carbon, kg CO2/kg material | 1.8 | |
| 2.3 |
| Embodied Energy, MJ/kg | 24 | |
| 31 |
| Embodied Water, L/kg | 54 | |
| 63 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 to 130 | |
| 140 to 150 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 980 to 1940 | |
| 810 to 1150 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 29 to 35 | |
| 26 |
| Strength to Weight: Bending, points | 25 to 28 | |
| 23 |
| Thermal Shock Resistance, points | 24 to 29 | |
| 22 |
Alloy Composition
| Carbon (C), % | 0.27 to 0.34 | |
| 0 to 0.1 |
| Chromium (Cr), % | 1.3 to 1.7 | |
| 0 |
| Iron (Fe), % | 95.7 to 97.5 | |
| 88.6 to 91.2 |
| Manganese (Mn), % | 0.6 to 1.0 | |
| 0.3 to 0.8 |
| Molybdenum (Mo), % | 0.3 to 0.5 | |
| 0 to 0.1 |
| Nickel (Ni), % | 0 | |
| 8.5 to 10 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 to 0.020 |
| Silicon (Si), % | 0 to 0.6 | |
| 0 to 0.35 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.0050 |
| Vanadium (V), % | 0.050 to 0.15 | |
| 0 to 0.050 |