ACI-ASTM CN7MS Steel vs. EN 1.4740 Stainless Steel
Both ACI-ASTM CN7MS steel and EN 1.4740 stainless steel are iron alloys. They have 70% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (10, 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 1.4740 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 160 | |
| 260 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Elongation at Break, % | 39 | |
| 22 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 77 | |
| 77 |
Thermal Properties
| Latent Heat of Fusion, J/g | 340 | |
| 300 |
| Maximum Temperature: Corrosion, °C | 420 | |
| 410 |
| Maximum Temperature: Mechanical, °C | 1040 | |
| 900 |
| Melting Completion (Liquidus), °C | 1400 | |
| 1420 |
| Melting Onset (Solidus), °C | 1350 | |
| 1370 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 490 |
| Thermal Conductivity, W/m-K | 12 | |
| 18 |
| Thermal Expansion, µm/m-K | 16 | |
| 10 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 28 | |
| 9.5 |
| Density, g/cm3 | 7.9 | |
| 7.6 |
| Embodied Carbon, kg CO2/kg material | 5.1 | |
| 2.3 |
| Embodied Energy, MJ/kg | 71 | |
| 32 |
| Embodied Water, L/kg | 180 | |
| 120 |
Common Calculations
| PREN (Pitting Resistance) | 28 | |
| 18 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Thermal Diffusivity, mm2/s | 3.2 | |
| 4.8 |
Alloy Composition
| Carbon (C), % | 0 to 0.070 | |
| 0.3 to 0.5 |
| Chromium (Cr), % | 18 to 20 | |
| 16 to 19 |
| Copper (Cu), % | 1.5 to 2.0 | |
| 0 |
| Iron (Fe), % | 45.4 to 53.5 | |
| 75.4 to 82.7 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 2.5 to 3.0 | |
| 0 to 0.5 |
| Nickel (Ni), % | 22 to 25 | |
| 0 to 1.0 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.040 |
| Silicon (Si), % | 2.5 to 3.5 | |
| 1.0 to 2.5 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.030 |