ACI-ASTM CN7MS Steel vs. EN 1.7321 Steel
Both ACI-ASTM CN7MS steel and EN 1.7321 steel are iron alloys. They have 51% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.
For each property being compared, the top bar is ACI-ASTM CN7MS steel and the bottom bar is EN 1.7321 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 160 | |
| 150 to 170 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 77 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 540 | |
| 490 to 1460 |
Thermal Properties
| Latent Heat of Fusion, J/g | 340 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 1040 | |
| 410 |
| Melting Completion (Liquidus), °C | 1400 | |
| 1460 |
| Melting Onset (Solidus), °C | 1350 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 470 |
| Thermal Conductivity, W/m-K | 12 | |
| 45 |
| Thermal Expansion, µm/m-K | 16 | |
| 13 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 28 | |
| 2.5 |
| Density, g/cm3 | 7.9 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 5.1 | |
| 1.5 |
| Embodied Energy, MJ/kg | 71 | |
| 20 |
| Embodied Water, L/kg | 180 | |
| 50 |
Common Calculations
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 19 | |
| 17 to 52 |
| Strength to Weight: Bending, points | 19 | |
| 18 to 36 |
| Thermal Diffusivity, mm2/s | 3.2 | |
| 12 |
| Thermal Shock Resistance, points | 13 | |
| 14 to 43 |
Alloy Composition
| Carbon (C), % | 0 to 0.070 | |
| 0.17 to 0.23 |
| Chromium (Cr), % | 18 to 20 | |
| 0.3 to 0.6 |
| Copper (Cu), % | 1.5 to 2.0 | |
| 0 to 0.25 |
| Iron (Fe), % | 45.4 to 53.5 | |
| 97.1 to 98.4 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0.7 to 1.0 |
| Molybdenum (Mo), % | 2.5 to 3.0 | |
| 0.4 to 0.5 |
| Nickel (Ni), % | 22 to 25 | |
| 0 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.025 |
| Silicon (Si), % | 2.5 to 3.5 | |
| 0 to 0.3 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.025 |