Grade CW6M Nickel vs. Grade N7M Nickel
Both grade CW6M nickel and grade N7M nickel are nickel alloys. Both are furnished in the heat treated (HT) condition. They have 82% of their average alloy composition in common.
For each property being compared, the top bar is grade CW6M nickel and the bottom bar is grade N7M nickel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 220 | |
| 220 |
| Elongation at Break, % | 29 | |
| 22 |
| Fatigue Strength, MPa | 210 | |
| 190 |
| Poisson's Ratio | 0.29 | |
| 0.31 |
| Shear Modulus, GPa | 84 | |
| 85 |
| Tensile Strength: Ultimate (UTS), MPa | 560 | |
| 590 |
| Tensile Strength: Yield (Proof), MPa | 310 | |
| 310 |
Thermal Properties
| Latent Heat of Fusion, J/g | 330 | |
| 320 |
| Maximum Temperature: Mechanical, °C | 970 | |
| 900 |
| Melting Completion (Liquidus), °C | 1530 | |
| 1650 |
| Melting Onset (Solidus), °C | 1470 | |
| 1590 |
| Specific Heat Capacity, J/kg-K | 430 | |
| 390 |
| Thermal Expansion, µm/m-K | 12 | |
| 9.9 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 65 | |
| 75 |
| Density, g/cm3 | 8.8 | |
| 9.3 |
| Embodied Carbon, kg CO2/kg material | 13 | |
| 16 |
| Embodied Energy, MJ/kg | 170 | |
| 200 |
| Embodied Water, L/kg | 300 | |
| 270 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 140 | |
| 110 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 220 | |
| 220 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 23 | |
| 22 |
| Strength to Weight: Axial, points | 18 | |
| 18 |
| Strength to Weight: Bending, points | 17 | |
| 17 |
| Thermal Shock Resistance, points | 16 | |
| 19 |
Alloy Composition
| Carbon (C), % | 0 to 0.070 | |
| 0 to 0.070 |
| Chromium (Cr), % | 17 to 20 | |
| 0 to 1.0 |
| Iron (Fe), % | 0 to 3.0 | |
| 0 to 3.0 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 17 to 20 | |
| 30 to 33 |
| Nickel (Ni), % | 54.9 to 66 | |
| 60.9 to 70 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.030 |