EN 1.6958 Steel vs. EN 1.8522 Steel
Both EN 1.6958 steel and EN 1.8522 steel are iron alloys. They have a very high 97% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.
For each property being compared, the top bar is EN 1.6958 steel and the bottom bar is EN 1.8522 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 340 | |
| 220 to 380 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 74 |
| Tensile Strength: Ultimate (UTS), MPa | 1140 | |
| 730 to 1250 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 260 |
| Maximum Temperature: Mechanical, °C | 450 | |
| 470 |
| 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 | 47 | |
| 39 |
| Thermal Expansion, µm/m-K | 11 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.9 | |
| 7.8 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 9.1 | |
| 8.9 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 5.0 | |
| 4.2 |
| Density, g/cm3 | 7.9 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 2.0 | |
| 2.2 |
| Embodied Energy, MJ/kg | 27 | |
| 31 |
| Embodied Water, L/kg | 60 | |
| 63 |
Common Calculations
| PREN (Pitting Resistance) | 2.9 | |
| 6.2 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 40 | |
| 26 to 44 |
| Strength to Weight: Bending, points | 31 | |
| 23 to 33 |
| Thermal Diffusivity, mm2/s | 13 | |
| 11 |
| Thermal Shock Resistance, points | 39 | |
| 21 to 36 |
Alloy Composition
| Aluminum (Al), % | 0.0050 to 0.050 | |
| 0 |
| Carbon (C), % | 0.25 to 0.3 | |
| 0.29 to 0.36 |
| Chromium (Cr), % | 1.2 to 1.7 | |
| 2.8 to 3.3 |
| Copper (Cu), % | 0 | |
| 0 to 0.1 |
| Iron (Fe), % | 92.6 to 94.5 | |
| 93.7 to 96 |
| Manganese (Mn), % | 0.2 to 0.5 | |
| 0.4 to 0.7 |
| Molybdenum (Mo), % | 0.35 to 0.55 | |
| 0.7 to 1.2 |
| Nickel (Ni), % | 3.3 to 3.8 | |
| 0 to 0.3 |
| Phosphorus (P), % | 0 to 0.020 | |
| 0 to 0.025 |
| Silicon (Si), % | 0.15 to 0.3 | |
| 0 to 0.4 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.035 |
| Vanadium (V), % | 0 to 0.12 | |
| 0.15 to 0.25 |