Haynes Alloys Flat Wire Haynes 214

Overview

Haynes Alloys Flat Wire 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 (enhances oxide adhesion).

Main Properties

Key Properties

● High-Temperature Performance:

Retains oxidation resistance up to 1200°C (2200°F); yttrium-stabilized Al₂O₃ layer prevents spalling.

Suitable for cyclic thermal environments due to thermal fatigue resistance.

● Mechanical Strength:

Higher tensile strength than round wire (cold-rolled processing increases work hardening).

Retains creep resistance under prolonged stress.

● Corrosion Resistance:

Resists oxidizing, carburizing, and nitriding atmospheres.

Fabrication & Processing

● Production:

Manufactured via cold rolling or precision rolling of round wire to achieve flat profiles.

● Formability:

Annealed condition (AMS 5876) improves bendability for complex shapes.

Avoid excessive bending radii to prevent edge cracking.

● Machining:

Challenging due to work hardening; use carbide tools and low-speed techniques.

Coolants recommended to manage heat during cutting.

● Welding:

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

Applications:

● Aerospace:

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

Sensor leads or resistive heating elements in extreme environments.

● Industrial:

Furnace components (e.g., radiant heater strips, thermocouple sheaths).

Electrical contacts in high-temperature industrial sensors.

● Energy:

Fuel cell interconnects or heat exchanger strips in gas turbines.

Standards & Specifications

● AMS 5876: Aerospace standard for annealed Haynes 214 wire (applicable to flat wire processing).

● Custom Dimensions: Typically available in thicknesses from 0.1–3 mm and widths up to 25 mm (varies by supplier).

Considerations

● vs. Round Wire:

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

Slightly lower ductility due to cold working.

● vs. Competing Alloys (Inconel 600, Hastelloy X):

Superior oxidation resistance above 1000°C due to Al/Y-enhanced oxide layer.

Less ductile than Inconel 600 at room temperature.

Key Considerations

● Surface Finish:

Post-rolling pickling or electropolishing may be needed to remove oxides.

● Anisotropy:

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

● Cost:

Higher than conventional nickel alloys due to specialized processing and yttrium content.

● Thermal Stability:

Avoid prolonged exposure to 650–870°C (risk of embrittlement from sigma phase formation).

Conclusion:

Haynes 214 flat wire is engineered for high-temperature applications requiring a thin, flat profile with uncompromised oxidation resistance. Its niche lies in aerospace seals, industrial heating systems, and precision components where geometry and extreme-environment performance are critical. While challenging to machine, its ability to withstand temperatures up to 1200°C makes it indispensable in mission-critical scenarios.

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