Hastelloy C-276 vs Inconel 718: 14% composition overlap. Significantly different materials serving different application areas.
Hastelloy C-276 vs Inconel 718
Side-by-side chemical composition and mechanical property comparison.
Overview
Hastelloy C-276
2.4819
The most versatile corrosion-resistant alloy available. Ni-Mo-Cr-W composition resists both oxidizing and reducing environments. Outstanding resistance to pitting, stress corrosion cracking, and wet chlorine gas. Used in chemical processing, flue gas desulfurization, pulp & paper, and waste treatment.
Inconel 718
2.4668
THE most widely used aerospace superalloy. Precipitation-hardened Ni-Cr-Fe alloy strengthened by gamma-prime and gamma-double-prime phases (Nb). Unique slow aging kinetics allow welding without cracking. UTS >1275 MPa aged. Used for gas turbine discs, jet engine components, rocket motors, cryogenic tanks, and oil/gas downhole tools. Service to 700°C.
| Hastelloy C-276 | Inconel 718 | |
|---|---|---|
| Material Number | 2.4819 | 2.4668 |
| Category | Nickel Alloys | Nickel Alloys |
| Standard | ASTM B575 | ASTM B637 |
Chemical composition (wt%)
| Element | Hastelloy C-276 | Inconel 718 | Overlap |
|---|---|---|---|
| C | 0–0.01% | 0–0.08% | OK |
| Si | 0–0.08% | 0–0.35% | OK |
| Mn | 0–1% | 0–0.35% | OK |
| Cr | 14.5–16.5% | 17–21% | No overlap |
Mechanical properties
| Property | Hastelloy C-276 | Inconel 718 | Unit |
|---|---|---|---|
| tensile_strength | ≥ 690 | ≥ 1275 | MPa |
| yield_strength | ≥ 310 | ≥ 1034 | MPa |
| elongation | ≥ 40 | ≥ 12 | % |
Compatibility Assessment
Hastelloy C-276 and Inconel 718 have significantly different compositions (14% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is Hastelloy C-276 the same as Inconel 718?
Hastelloy C-276 and Inconel 718 have a 14% composition overlap. They are generally not directly interchangeable.
Can I replace Hastelloy C-276 with Inconel 718?
Generally not recommended. The compositions differ significantly (14% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between Hastelloy C-276 and Inconel 718?
The main differences are in the following elements: Cr, Mo. Hastelloy C-276 is a Nickel Alloys grade, while Inconel 718 is a Nickel Alloys grade.
Related Comparisons
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Data provided for reference only. Always verify against the applicable specification for critical applications.
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