EN 1.7725 Steel vs. EN 1.1203 Steel
Both EN 1.7725 steel and EN 1.1203 steel are iron alloys. They have a very high 98% of their average alloy composition in common. There are 30 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 1.1203 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 250 to 300 | |
| 200 to 230 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 14 | |
| 12 to 15 |
| Fatigue Strength, MPa | 390 to 550 | |
| 210 to 310 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 72 |
| Tensile Strength: Ultimate (UTS), MPa | 830 to 1000 | |
| 690 to 780 |
| Tensile Strength: Yield (Proof), MPa | 610 to 860 | |
| 340 to 480 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 440 | |
| 400 |
| 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 | |
| 48 |
| Thermal Expansion, µm/m-K | 13 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.4 | |
| 7.2 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.6 | |
| 8.3 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.9 | |
| 2.1 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.8 | |
| 1.4 |
| Embodied Energy, MJ/kg | 24 | |
| 19 |
| Embodied Water, L/kg | 54 | |
| 47 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 to 130 | |
| 69 to 100 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 980 to 1940 | |
| 310 to 610 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 29 to 35 | |
| 25 to 28 |
| Strength to Weight: Bending, points | 25 to 28 | |
| 22 to 24 |
| Thermal Diffusivity, mm2/s | 11 | |
| 13 |
| Thermal Shock Resistance, points | 24 to 29 | |
| 22 to 25 |
Alloy Composition
| Carbon (C), % | 0.27 to 0.34 | |
| 0.52 to 0.6 |
| Chromium (Cr), % | 1.3 to 1.7 | |
| 0 to 0.4 |
| Iron (Fe), % | 95.7 to 97.5 | |
| 97.1 to 98.9 |
| Manganese (Mn), % | 0.6 to 1.0 | |
| 0.6 to 0.9 |
| Molybdenum (Mo), % | 0.3 to 0.5 | |
| 0 to 0.1 |
| Nickel (Ni), % | 0 | |
| 0 to 0.4 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 to 0.035 |
| Silicon (Si), % | 0 to 0.6 | |
| 0 to 0.4 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.035 |
| Vanadium (V), % | 0.050 to 0.15 | |
| 0 |