Inconel 600 (Ni-76Cr-16Fe-8) annealed vs Inconel 718
Property comparison of Inconel 600 (Ni-76Cr-16Fe-8) annealed and Inconel 718, both nickel alloy.
| Property | Inconel 600 (Ni-76Cr-16Fe-8) annealed | Inconel 718 | Difference |
|---|---|---|---|
| Yield strength | 240 MPa | 1,036 MPa | +332% |
| Tensile strength | 550 MPa | 1,240 MPa | +125% |
| Elongation | 30 % | 12 % | -60% |
| Elastic modulus | 214,000 MPa | 211,000 MPa | -1% |
| Shear modulus | 75,845 MPa | 78,603 MPa | +4% |
| Poisson ratio | 0.29 | 0.29 | 0% |
| Density | 8,420 kg/m³ | 8,220 kg/m³ | -2% |
| Thermal conductivity | 15.9 W/m·K | 11.4 W/m·K | -28% |
| Specific heat | 444 J/kg·K | 435 J/kg·K | -2% |
| Coefficient of thermal expansion | 0.00001 1/K | 0.000013 1/K | +25% |
| Melting point | 1,413 °C | 1,336 °C | -5% |
Difference is Inconel 718 relative to Inconel 600 (Ni-76Cr-16Fe-8) annealed. Values are taken from the representative row of each material; both materials may have multiple heat treatments or conditions on their individual pages.
Identification
- grade
- N06600
- standard
- Special Metals Corp. tech bulletin INCONEL alloy 600 (SMC-027)
- heat treatment
- mill-annealed
- grade
- N07718
- standard
- Special Metals Corp. tech bulletin INCONEL alloy 718 (SMC-045); AMS 5663
- heat treatment
- solution annealed + double aged (720C/8h + 620C/8h)
About Inconel nickel-chromium superalloys
Inconel is a family of nickel-chromium-iron superalloys. They keep strength at temperatures where steels and most stainless grades have failed and resist oxidation and hot corrosion. Inconel 718 is the most widely used grade for aerospace turbine disks and high-temperature fasteners; Inconel 625 is the choice when chloride and reducing-acid corrosion both matter.
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