Nickel 908 vs. SAE-AISI 5140 Steel
Nickel 908 belongs to the nickel alloys classification, while SAE-AISI 5140 steel belongs to the iron alloys. They have 42% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.
For each property being compared, the top bar is nickel 908 and the bottom bar is SAE-AISI 5140 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 180 | |
| 190 |
| Elongation at Break, % | 11 | |
| 12 to 29 |
| Fatigue Strength, MPa | 450 | |
| 220 to 570 |
| Poisson's Ratio | 0.3 | |
| 0.29 |
| Shear Modulus, GPa | 70 | |
| 73 |
| Shear Strength, MPa | 800 | |
| 360 to 600 |
| Tensile Strength: Ultimate (UTS), MPa | 1340 | |
| 560 to 970 |
| Tensile Strength: Yield (Proof), MPa | 930 | |
| 290 to 840 |
Thermal Properties
| Latent Heat of Fusion, J/g | 290 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 920 | |
| 420 |
| 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 | |
| 45 |
| Thermal Expansion, µm/m-K | 8.6 | |
| 13 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 50 | |
| 2.1 |
| Density, g/cm3 | 8.3 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 9.3 | |
| 1.4 |
| Embodied Energy, MJ/kg | 140 | |
| 19 |
| Embodied Water, L/kg | 170 | |
| 49 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 140 | |
| 76 to 180 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 2340 | |
| 220 to 1880 |
| Stiffness to Weight: Axial, points | 12 | |
| 13 |
| Stiffness to Weight: Bending, points | 23 | |
| 24 |
| Strength to Weight: Axial, points | 45 | |
| 20 to 34 |
| Strength to Weight: Bending, points | 33 | |
| 19 to 28 |
| Thermal Diffusivity, mm2/s | 2.9 | |
| 12 |
| Thermal Shock Resistance, points | 61 | |
| 16 to 29 |
Alloy Composition
| Aluminum (Al), % | 0.75 to 1.3 | |
| 0 |
| Boron (B), % | 0 to 0.012 | |
| 0 |
| Carbon (C), % | 0 to 0.030 | |
| 0.38 to 0.43 |
| Chromium (Cr), % | 3.8 to 4.5 | |
| 0.7 to 0.9 |
| Cobalt (Co), % | 0 to 0.5 | |
| 0 |
| Copper (Cu), % | 0 to 0.5 | |
| 0 |
| Iron (Fe), % | 35.6 to 44.6 | |
| 97.3 to 98.1 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0.7 to 0.9 |
| Nickel (Ni), % | 47 to 51 | |
| 0 |
| Niobium (Nb), % | 2.7 to 3.3 | |
| 0 |
| Phosphorus (P), % | 0 to 0.015 | |
| 0 to 0.035 |
| Silicon (Si), % | 0 to 0.5 | |
| 0.15 to 0.35 |
| Sulfur (S), % | 0 to 0.0050 | |
| 0 to 0.040 |
| Titanium (Ti), % | 1.2 to 1.8 | |
| 0 |