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Maglia in Hastelloy
Hastelloy wire mesh is a high-performance woven or welded wire mesh made of Hastelloy® nickel-based high-temperature alloy, designed for use in aggressive chemical environments where stainless steel (even 316L and 904L) and Inconel fail. It is the preferred choice for applications in chemical processing, aerospace, and pollution control for strong acid, chloride, and high-temperature resistance.
Parametri tecnici
Weaves: | Plain, Twill, Dutch, and Welded. |
Mesh Sizes: | 20 mesh (coarse) to 400 mesh (extra fine). |
Wire Diameter: | 0.025 mm (fine) to 3 mm (heavy). |
Comparison of Hastelloy with other alloys:
Property | Hastelloy C276 mesh | 316L stainless steel mesh | Inconel 625 mesh | Titanium mesh |
Hydrochloric acid resistance | Good | Poor | Better | Poor |
Chloride pitting | Good | Poor | Better | Better |
Maximum temperature | 1095°C | 870°C | 1095°C | 600°C |
cost | $$$$$ | $$ | $$$$$ | $$$$$ |
Nota: i parametri sopra indicati possono essere ottimizzati e personalizzati in base alle condizioni di lavoro.
Caratteristiche e vantaggi del prodotto
Unparalleled corrosion resistance
Resistant to hydrochloric, sulfuric, phosphoric, and nitric acids (even at elevated temperatures)
Imperfect against pitting and crevice corrosion in chlorides (better than Inconel 625)
Handles both oxidizing and reducing environments (unlike standard metals)
Temperature performance:
– C276/C22: Up to 1095°C (2000°F) (continuous).
– Hastelloy X: Up to 1200°C (2200°F) (extreme heat).
Mechanical strength:
– High tensile strength even at elevated temperatures.
– Excellent fatigue resistance to vibration/cyclic loading.
Industria di applicazione del prodotto
Chemical and Petrochemical
– Acid filtration (HCl, H₂SO₄), reactor screens, chlorine scrubbers.
Pollution Control (Flue Gas Desulfurization, Waste Incineration)
– Flue Gas Desulfurization (FGD) mist eliminators.
– Stack filters for filtering toxic emissions.
Aerospace and Defense
– Rocket engine components, exhaust screens.
Pharmaceutical and Nuclear
– High-purity acid processing, nuclear waste containment.
Oil and Gas (Sour Services)
– Downhole filters, offshore platform components.
Conclusion
Hastelloy wire mesh is the king of corrosion-resistant alloys, ideal for the most aggressive chemical, high-temperature, and marine environments. It’s expensive, but unmatched in environments where damage is unacceptable. For less extreme conditions, consider Inconel 625 or 316L. For high-temperature services without acids, RA330 or Inconel 600 may be sufficient.
FAQ
– Exposure to boiling hydrochloric/sulfuric acid.
– Offshore/combined marine + chemical environments.
– Where 316L, 904L, or Inconel fails.
– Mild environments (overuse, use 316L).
– Budget-constrained projects (very expensive).
– Welding: Use a Hastelloy filler metal (e.g., ERNiCrMo-4 for C276).
– Machining: Use slow, sharp carbide tools.
– Cleaning: Passivate with nitric and hydrofluoric acid for maximum corrosion resistance.
– Hastelloy C276: UNS N10276 / EN 2.4819
– Hastelloy C22: UNS N06022 / EN 2.4602
– Hastelloy B2: UNS N10665
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