Hastelloy C276 is one of the most widely used corrosion-resistant nickel-molybdenum alloys. Engineers and procurement managers frequently choose this alloy for harsh chemical environments, including chloride-containing systems, reducing acids, seawater, and mixed industrial environments.
This guide provides a complete overview of the chemical composition and corrosion resistance of Hastelloy C276, helping B2B buyers make accurate material selection decisions.
Hastelloy C276 contains high levels of nickel, molybdenum, chromium, and controlled amounts of tungsten. These elements work together to provide exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking.
Standard Chemical Composition (% by weight)
| Element |
Percentage (%) |
| Nickel (Ni) |
Balance |
| Molybdenum (Mo) |
15.0–17.0 |
| Chromium (Cr) |
14.5–16.5 |
| Iron (Fe) |
4.0–7.0 |
| Tungsten (W) |
3.0–4.5 |
| Cobalt (Co) |
≤ 2.5 |
| Manganese (Mn) |
≤ 1.0 |
| Silicon (Si) |
≤ 0.08 |
| Carbon (C) |
≤ 0.010 |
| Sulfur (S) |
≤ 0.03 |
This composition ensures stable performance in both oxidizing and reducing chemical environments.
Hastelloy C276 is recognized for its superior corrosion resistance in multiple aggressive media.
Resistance Performance Overview
| Environment |
Performance of Hastelloy C276 |
Summary |
| Hydrochloric Acid |
Excellent |
Highly resistant at all concentrations |
| Chloride-Rich Environments |
Excellent |
Prevents pitting & crevice corrosion |
| Sulfuric Acid |
Good–Excellent |
Up to high concentrations depending on temperature |
| Seawater |
Excellent |
Outstanding resistance to localized corrosion |
| Wet Chlorine Gas |
Excellent |
One of the best materials available |
| Organic Acids |
Excellent |
Suitable for long-term service |
Why Engineers Prefer Hastelloy C276
Stable performance in mixed corrosive conditions
Exceptional resistance to pitting and crevice corrosion
Suitable for chemical reactors, scrubbers, heat exchangers, pollution control systems
Reliable performance at high temperatures
Conclusion
For industries requiring long-term reliability in corrosive conditions,
Hastelloy C276 remains the preferred choice due to its chemical stability and extraordinary corrosion resistance.
For
customized C276 plates, tubes, bars, and fittings, customers can contact our engineering team for detailed quotations.
