Aged 200 Maraging Steel vs. Direct Aged Nickel 718
Aged 200 maraging steel belongs to the iron alloys classification, while direct aged nickel 718 belongs to the nickel alloys. They have a modest 40% of their average alloy composition in common, which, by itself, doesn't mean much. There are 27 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.
For each property being compared, the top bar is aged 200 maraging steel and the bottom bar is direct aged nickel 718.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 9.1 | |
| 19 |
| Fatigue Strength, MPa | 760 | |
| 760 |
| Fracture Toughness, MPa-m1/2 | 160 | |
| 220 |
| Poisson's Ratio | 0.3 | |
| 0.29 |
| Rockwell C Hardness | 45 | |
| 40 |
| Shear Modulus, GPa | 74 | |
| 75 |
| Shear Strength, MPa | 890 | |
| 950 |
| Tensile Strength: Ultimate (UTS), MPa | 1500 | |
| 1530 |
| Tensile Strength: Yield (Proof), MPa | 1490 | |
| 1330 |
Thermal Properties
| Latent Heat of Fusion, J/g | 260 | |
| 310 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1340 |
| Melting Onset (Solidus), °C | 1420 | |
| 1260 |
| Specific Heat Capacity, J/kg-K | 460 | |
| 450 |
| Thermal Expansion, µm/m-K | 12 | |
| 13 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 31 | |
| 75 |
| Density, g/cm3 | 8.2 | |
| 8.3 |
| Embodied Carbon, kg CO2/kg material | 4.5 | |
| 13 |
| Embodied Energy, MJ/kg | 59 | |
| 190 |
| Embodied Water, L/kg | 140 | |
| 250 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 140 | |
| 280 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 5740 | |
| 4560 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 23 | |
| 23 |
| Strength to Weight: Axial, points | 51 | |
| 51 |
| Strength to Weight: Bending, points | 35 | |
| 35 |
| Thermal Shock Resistance, points | 45 | |
| 44 |
Alloy Composition
| Aluminum (Al), % | 0.050 to 0.15 | |
| 0.2 to 0.8 |
| Boron (B), % | 0 to 0.0030 | |
| 0 to 0.0060 |
| Calcium (Ca), % | 0 to 0.050 | |
| 0 |
| Carbon (C), % | 0 to 0.030 | |
| 0 to 0.080 |
| Chromium (Cr), % | 0 | |
| 17 to 21 |
| Cobalt (Co), % | 8.0 to 9.0 | |
| 0 to 1.0 |
| Copper (Cu), % | 0 | |
| 0 to 0.3 |
| Iron (Fe), % | 67.8 to 71.8 | |
| 11.1 to 24.6 |
| Manganese (Mn), % | 0 to 0.1 | |
| 0 to 0.35 |
| Molybdenum (Mo), % | 3.0 to 3.5 | |
| 2.8 to 3.3 |
| Nickel (Ni), % | 17 to 19 | |
| 50 to 55 |
| Niobium (Nb), % | 0 | |
| 4.8 to 5.5 |
| Phosphorus (P), % | 0 to 0.010 | |
| 0 to 0.015 |
| Silicon (Si), % | 0 to 0.1 | |
| 0 to 0.35 |
| Sulfur (S), % | 0 to 0.010 | |
| 0 to 0.015 |
| Titanium (Ti), % | 0.15 to 0.25 | |
| 0.65 to 1.2 |
| Zirconium (Zr), % | 0 to 0.020 | |
| 0 |