AWS ERNiCrMo-3 vs. AWS ENiCu-7
Both AWS ERNiCrMo-3 and AWS ENiCu-7 are nickel alloys. Both are furnished in the as-welded condition. They have 66% of their average alloy composition in common.
For each property being compared, the top bar is AWS ERNiCrMo-3 and the bottom bar is AWS ENiCu-7.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 160 |
| Elongation at Break, % | 34 | |
| 34 |
| Poisson's Ratio | 0.29 | |
| 0.32 |
| Shear Modulus, GPa | 79 | |
| 62 |
| Tensile Strength: Ultimate (UTS), MPa | 870 | |
| 550 |
Thermal Properties
| Latent Heat of Fusion, J/g | 330 | |
| 280 |
| Melting Completion (Liquidus), °C | 1480 | |
| 1270 |
| Melting Onset (Solidus), °C | 1430 | |
| 1230 |
| Specific Heat Capacity, J/kg-K | 440 | |
| 430 |
| Thermal Conductivity, W/m-K | 11 | |
| 21 |
| Thermal Expansion, µm/m-K | 12 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 1.3 | |
| 3.3 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 1.4 | |
| 3.3 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 80 | |
| 50 |
| Density, g/cm3 | 8.6 | |
| 8.7 |
| Embodied Carbon, kg CO2/kg material | 14 | |
| 8.0 |
| Embodied Energy, MJ/kg | 190 | |
| 110 |
| Embodied Water, L/kg | 290 | |
| 250 |
Common Calculations
| Stiffness to Weight: Axial, points | 13 | |
| 10 |
| Stiffness to Weight: Bending, points | 23 | |
| 21 |
| Strength to Weight: Axial, points | 28 | |
| 17 |
| Strength to Weight: Bending, points | 24 | |
| 17 |
| Thermal Diffusivity, mm2/s | 2.8 | |
| 5.5 |
| Thermal Shock Resistance, points | 25 | |
| 18 |
Alloy Composition
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| Aluminum (Al), % | 0 to 0.4 | |
| 0 to 0.75 |
| Carbon (C), % | 0 to 0.010 | |
| 0 to 0.1 |
| Chromium (Cr), % | 20 to 23 | |
| 0 |
| Copper (Cu), % | 0 to 0.5 | |
| 20.6 to 38 |
| Iron (Fe), % | 0 to 5.0 | |
| 0 to 2.5 |
| Manganese (Mn), % | 0 to 0.5 | |
| 0 to 4.0 |
| Molybdenum (Mo), % | 8.0 to 10 | |
| 0 |
| Nickel (Ni), % | 58 to 68.9 | |
| 62 to 69 |
| Niobium (Nb), % | 3.2 to 4.2 | |
| 0 |
| Phosphorus (P), % | 0 to 0.020 | |
| 0 to 0.020 |
| Silicon (Si), % | 0 to 0.5 | |
| 0 to 1.5 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.015 |
| Titanium (Ti), % | 0 to 0.4 | |
| 0 to 1.0 |
| Residuals, % | 0 to 0.5 | |
| 0 to 0.5 |