SAE-AISI 8740 Steel vs. Monel K-500
SAE-AISI 8740 steel belongs to the iron alloys classification, while Monel K-500 belongs to the nickel alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI 8740 steel and the bottom bar is Monel K-500.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 160 |
| Elongation at Break, % | 11 to 23 | |
| 25 to 36 |
| Fatigue Strength, MPa | 270 to 350 | |
| 260 to 560 |
| Poisson's Ratio | 0.29 | |
| 0.32 |
| Shear Modulus, GPa | 73 | |
| 61 |
| Shear Strength, MPa | 370 to 400 | |
| 430 to 700 |
| Tensile Strength: Ultimate (UTS), MPa | 580 to 670 | |
| 640 to 1100 |
| Tensile Strength: Yield (Proof), MPa | 380 to 570 | |
| 310 to 880 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 270 |
| Maximum Temperature: Mechanical, °C | 410 | |
| 900 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1350 |
| Melting Onset (Solidus), °C | 1420 | |
| 1320 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 440 |
| Thermal Conductivity, W/m-K | 39 | |
| 18 |
| Thermal Expansion, µm/m-K | 13 | |
| 14 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.3 | |
| 3.1 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.4 | |
| 3.2 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.6 | |
| 50 |
| Density, g/cm3 | 7.8 | |
| 8.7 |
| Embodied Carbon, kg CO2/kg material | 1.5 | |
| 8.1 |
| Embodied Energy, MJ/kg | 20 | |
| 120 |
| Embodied Water, L/kg | 50 | |
| 280 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 71 to 120 | |
| 180 to 260 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 390 to 850 | |
| 300 to 2420 |
| Stiffness to Weight: Axial, points | 13 | |
| 10 |
| Stiffness to Weight: Bending, points | 24 | |
| 21 |
| Strength to Weight: Axial, points | 20 to 24 | |
| 21 to 35 |
| Strength to Weight: Bending, points | 20 to 22 | |
| 19 to 27 |
| Thermal Diffusivity, mm2/s | 10 | |
| 4.8 |
| Thermal Shock Resistance, points | 17 to 20 | |
| 21 to 36 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 2.3 to 3.2 |
| Carbon (C), % | 0.38 to 0.43 | |
| 0 to 0.18 |
| Chromium (Cr), % | 0.4 to 0.6 | |
| 0 |
| Copper (Cu), % | 0 | |
| 27 to 33 |
| Iron (Fe), % | 96.5 to 97.7 | |
| 0 to 2.0 |
| Manganese (Mn), % | 0.75 to 1.0 | |
| 0 to 1.5 |
| Molybdenum (Mo), % | 0.2 to 0.3 | |
| 0 |
| Nickel (Ni), % | 0.4 to 0.7 | |
| 63 to 70.4 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 |
| Silicon (Si), % | 0.15 to 0.35 | |
| 0 to 0.5 |
| Sulfur (S), % | 0 to 0.040 | |
| 0 to 0.010 |
| Titanium (Ti), % | 0 | |
| 0.35 to 0.85 |