EN 1.1133 Steel vs. EN 1.7725 Steel
Both EN 1.1133 steel and EN 1.7725 steel are iron alloys. They have a very high 98% of their average alloy composition in common. 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 1.1133 steel and the bottom bar is EN 1.7725 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 170 to 180 | |
| 250 to 300 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 19 to 24 | |
| 14 |
| Fatigue Strength, MPa | 230 to 310 | |
| 390 to 550 |
| Impact Strength: V-Notched Charpy, J | 45 to 48 | |
| 34 to 35 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 580 to 620 | |
| 830 to 1000 |
| Tensile Strength: Yield (Proof), MPa | 320 to 460 | |
| 610 to 860 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 400 | |
| 440 |
| 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 | 49 | |
| 39 |
| Thermal Expansion, µm/m-K | 12 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.3 | |
| 7.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.3 | |
| 8.6 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.1 | |
| 2.9 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.5 | |
| 1.8 |
| Embodied Energy, MJ/kg | 19 | |
| 24 |
| Embodied Water, L/kg | 48 | |
| 54 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 to 120 | |
| 110 to 130 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 270 to 550 | |
| 980 to 1940 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 21 to 22 | |
| 29 to 35 |
| Strength to Weight: Bending, points | 20 to 21 | |
| 25 to 28 |
| Thermal Diffusivity, mm2/s | 13 | |
| 11 |
| Thermal Shock Resistance, points | 18 to 19 | |
| 24 to 29 |
Alloy Composition
| Carbon (C), % | 0.17 to 0.23 | |
| 0.27 to 0.34 |
| Chromium (Cr), % | 0 to 0.4 | |
| 1.3 to 1.7 |
| Iron (Fe), % | 96.9 to 98.8 | |
| 95.7 to 97.5 |
| Manganese (Mn), % | 1.0 to 1.5 | |
| 0.6 to 1.0 |
| Molybdenum (Mo), % | 0 to 0.1 | |
| 0.3 to 0.5 |
| Nickel (Ni), % | 0 to 0.4 | |
| 0 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 to 0.025 |
| Silicon (Si), % | 0 to 0.4 | |
| 0 to 0.6 |
| Sulfur (S), % | 0 to 0.035 | |
| 0 to 0.030 |
| Vanadium (V), % | 0 | |
| 0.050 to 0.15 |