Nickel 908 vs. SAE-AISI 1078 Steel
Nickel 908 belongs to the nickel alloys classification, while SAE-AISI 1078 steel belongs to the iron alloys. They have 41% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.
For each property being compared, the top bar is nickel 908 and the bottom bar is SAE-AISI 1078 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 180 | |
| 190 |
| Elongation at Break, % | 11 | |
| 11 to 14 |
| Fatigue Strength, MPa | 450 | |
| 270 to 350 |
| Poisson's Ratio | 0.3 | |
| 0.29 |
| Shear Modulus, GPa | 70 | |
| 72 |
| Shear Strength, MPa | 800 | |
| 440 to 470 |
| Tensile Strength: Ultimate (UTS), MPa | 1340 | |
| 730 to 780 |
| Tensile Strength: Yield (Proof), MPa | 930 | |
| 430 to 570 |
Thermal Properties
| Latent Heat of Fusion, J/g | 290 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 920 | |
| 400 |
| Melting Completion (Liquidus), °C | 1430 | |
| 1460 |
| Melting Onset (Solidus), °C | 1380 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 460 | |
| 470 |
| Thermal Conductivity, W/m-K | 11 | |
| 49 |
| Thermal Expansion, µm/m-K | 8.6 | |
| 11 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 50 | |
| 1.8 |
| Density, g/cm3 | 8.3 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 9.3 | |
| 1.4 |
| Embodied Energy, MJ/kg | 140 | |
| 18 |
| Embodied Water, L/kg | 170 | |
| 45 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 140 | |
| 77 to 90 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 2340 | |
| 490 to 860 |
| Stiffness to Weight: Axial, points | 12 | |
| 13 |
| Stiffness to Weight: Bending, points | 23 | |
| 24 |
| Strength to Weight: Axial, points | 45 | |
| 26 to 28 |
| Strength to Weight: Bending, points | 33 | |
| 23 to 24 |
| Thermal Diffusivity, mm2/s | 2.9 | |
| 13 |
| Thermal Shock Resistance, points | 61 | |
| 25 to 26 |
Alloy Composition
| Aluminum (Al), % | 0.75 to 1.3 | |
| 0 |
| Boron (B), % | 0 to 0.012 | |
| 0 |
| Carbon (C), % | 0 to 0.030 | |
| 0.72 to 0.85 |
| Chromium (Cr), % | 3.8 to 4.5 | |
| 0 |
| Cobalt (Co), % | 0 to 0.5 | |
| 0 |
| Copper (Cu), % | 0 to 0.5 | |
| 0 |
| Iron (Fe), % | 35.6 to 44.6 | |
| 98.5 to 99 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0.3 to 0.6 |
| Nickel (Ni), % | 47 to 51 | |
| 0 |
| Niobium (Nb), % | 2.7 to 3.3 | |
| 0 |
| Phosphorus (P), % | 0 to 0.015 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 0.5 | |
| 0 |
| Sulfur (S), % | 0 to 0.0050 | |
| 0 to 0.050 |
| Titanium (Ti), % | 1.2 to 1.8 | |
| 0 |