Haynes Alloys Flat Strip Haynes 214

Overview

Haynes Alloys Flat Strip Haynes 214 ,Identical to other Haynes 214 forms.

Limiting Chemical Composition, %

Nickel...........................................................................................................................................75.0-80.0

Chromium............................................................................................................................................16.0

Aluminum..............................................................................................................................................4.5

Iron.........................................................................................................................................................3.0

Yttrium (Y): Trace amounts (improves adhesion of the oxide layer, preventing spalling).

Key Properties

● High-Temperature Performance:

Maintains oxidation resistance up to 1200°C (2200°F) due to the yttrium-stabilized Al₂O₃ scale.

Excellent thermal fatigue resistance for cyclic heating/cooling applications.

● Mechanical Strength:

High tensile strength, especially in cold-rolled conditions (work-hardened state).

Retains creep resistance under prolonged stress at elevated temperatures.

● Corrosion Resistance:

Resists oxidizing, carburizing, and nitriding atmospheres, ideal for industrial furnace environments.

Fabrication & Processing

● Manufacturing:

Produced via hot rolling or cold rolling into flat profiles, with precise thickness tolerances.

● Formability:

Annealed Condition: Improved ductility for bending, stamping, or forming (e.g., solution annealed at 1120–1175°C).

Cold-Rolled Condition: Higher strength but reduced ductility; avoid sharp bends to prevent cracking.

● Machining:

Challenging due to rapid work hardening; use carbide tools, low cutting speeds, and high feed rates.

Coolants/lubricants recommended to mitigate heat buildup.

● Welding:

Compatible with TIG (GTAW) and laser welding; post-weld annealing reduces residual stresses.

Applications:

● Aerospace:

High-temperature gaskets, seals, and shims in combustion chambers or exhaust systems.

Structural components in turbine engines requiring flat geometries.

● Industrial:

Furnace fixtures (radiant tubes, heat shields, burner plates).

Heat exchanger plates, pyrolysis reactor liners, and industrial sensor components.

● Energy:

Fuel cell interconnects or bipolar plates in high-temperature fuel cells.

Nuclear reactor cladding or shielding strips.

Standards & Specifications

● AMS 5877: Aerospace specification for Haynes 214 flat products (covers bars, forgings, and strips).

● Custom Dimensions: Typically available in thicknesses 0.5–6 mm and widths up to 300 mm (varies by supplier).

Considerations

● vs. Haynes 214 Flat Wire::

Flat wire offers greater surface-area-to-volume ratio for improved heat dissipation or electrical contact.

Similar oxidation resistance but tailored for load-bearing or heat-transfer surfaces.

● vs. Inconel 625:

Superior oxidation resistance above 1000°C but less corrosion resistance in acidic environments.

Less ductile than Inconel 600 at room temperature.

● vs. Hastelloy X:

Better carburization resistance but lower intermediate-temperature strength.

Key Considerations

● Surface Finish:

Pickling or electropolishing may be required to remove surface oxides post-rolling.

● Anisotropy:

Mechanical properties may vary slightly along the rolling direction vs. transverse.

● Thermal Stability:

Avoid prolonged exposure to 650–870°C (1200–1600°F) to prevent sigma phase embrittlement.

● Cost:

Premium pricing due to nickel/yttrium content and specialized rolling processes.

Conclusion:

Haynes 214 flat strip is engineered for high-temperature applications demanding a combination of geometric precision, oxidation resistance, and mechanical strength. Its flat profile makes it ideal for aerospace seals, industrial furnace components, and energy systems where large surface areas or specific geometries are critical. While machining and forming require expertise, its unmatched performance in extreme environments justifies its use in mission-critical applications up to 1200°C.

Available Forms

We provide you with a variety of product forms, including but not limited to

● Strip & Foil

● Round Wire &Flat Wire

● Bar & Rod

● Electrothermal Strip

● Flange & Ring

● Wire & Welding

● Reststance Wire

● Electric Alloy Wire

● Electric Furnace Bar

● Customize