ACI-ASTM CN7MS Steel vs. SAE-AISI 1084 Steel
Both ACI-ASTM CN7MS steel and SAE-AISI 1084 steel are iron alloys. They have 50% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.
For each property being compared, the top bar is ACI-ASTM CN7MS steel and the bottom bar is SAE-AISI 1084 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 160 | |
| 220 to 270 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Elongation at Break, % | 39 | |
| 11 |
| Fatigue Strength, MPa | 200 | |
| 320 to 370 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 77 | |
| 72 |
| Tensile Strength: Ultimate (UTS), MPa | 540 | |
| 780 to 930 |
| Tensile Strength: Yield (Proof), MPa | 230 | |
| 510 to 600 |
Thermal Properties
| Latent Heat of Fusion, J/g | 340 | |
| 240 |
| Maximum Temperature: Mechanical, °C | 1040 | |
| 400 |
| Melting Completion (Liquidus), °C | 1400 | |
| 1450 |
| Melting Onset (Solidus), °C | 1350 | |
| 1410 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 470 |
| Thermal Conductivity, W/m-K | 12 | |
| 51 |
| Thermal Expansion, µm/m-K | 16 | |
| 12 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 28 | |
| 1.8 |
| Density, g/cm3 | 7.9 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 5.1 | |
| 1.4 |
| Embodied Energy, MJ/kg | 71 | |
| 19 |
| Embodied Water, L/kg | 180 | |
| 46 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 170 | |
| 81 to 89 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 140 | |
| 700 to 960 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 19 | |
| 28 to 33 |
| Strength to Weight: Bending, points | 19 | |
| 24 to 27 |
| Thermal Diffusivity, mm2/s | 3.2 | |
| 14 |
| Thermal Shock Resistance, points | 13 | |
| 25 to 30 |
Alloy Composition
| Carbon (C), % | 0 to 0.070 | |
| 0.8 to 0.93 |
| Chromium (Cr), % | 18 to 20 | |
| 0 |
| Copper (Cu), % | 1.5 to 2.0 | |
| 0 |
| Iron (Fe), % | 45.4 to 53.5 | |
| 98.1 to 98.6 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0.6 to 0.9 |
| Molybdenum (Mo), % | 2.5 to 3.0 | |
| 0 |
| Nickel (Ni), % | 22 to 25 | |
| 0 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.040 |
| Silicon (Si), % | 2.5 to 3.5 | |
| 0 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.050 |