Product Information

Product Name: Incoloy 800H Wire

Material Type: Nickel-Iron-Chromium Superalloy (High-Carbon Variant)

Standards: ASTM B407, ASTM B408, AMS 5766, UNS N08810, DIN 1.4958

Forms Available: Round wire, flat wire, spooled wire, and custom-drawn profiles.

Diameter Range: 0.2 mm to 12.0 mm (customizable upon request).

Surface Finish: Bright annealed, pickled, or electro-polished.

Operating Temperature:

• Continuous service: Up to 925°C (1700°F)

• Short-term exposure: Up to 1150°C (2100°F)

Certifications: Compliant with ASME Boiler & Pressure Vessel Code, NACE MR-0175, and ISO 15156.

Characteristics

Incoloy 800H wire is a high-carbon variant of Incoloy 800, tailored for extreme thermal and mechanical stress applications:

• Enhanced Creep Strength: Elevated carbon content (0.05-0.10%) promotes intragranular carbide precipitation, delivering 30% higher creep rupture life than standard Incoloy 800 at 800°C.

• Oxidation & Carburization Resistance: Forms a protective Cr₂O₃-Al₂O₃ oxide layer, preventing scaling in oxidizing atmospheres and carbon ingress in hydrocarbon environments.

• Phase Stability: Retains austenitic structure without sigma-phase embrittlement even after 10,000+ hours at 900°C.

• High-Temperature Ductility: Maintains elongation >20% at 800°C, critical for thermal fatigue resistance.

• Thermal Cycling Performance: Low thermal expansion coefficient (14.5 μm/m·°C at 20–600°C) reduces stress buildup during repeated heating/cooling cycles.

• Fabrication Versatility: Compatible with TIG, MIG, and plasma welding; cold-drawn with intermediate annealing for tight dimensional control.

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Technology

Manufacturing Process:

• Vacuum Induction Melting (VIM): Ensures precise carbon control and ultra-low impurity levels (S < 0.01%, P < 0.02%).

• Thermomechanical Processing: Hot-rolled bars are cold-drawn using multi-pass dies with ±0.02 mm tolerance.

• Heat Treatment:

• Solution annealing at 1175-1200°C (2150-2200°F) to dissolve secondary phases.

• Rapid cooling in argon to lock carbon in solid solution and refine grain structure.

• Surface Engineering: Electro-polishing (Ra < 0.3 μm) enhances corrosion resistance and reduces friction in high-velocity applications.

Quality Control:

• Glow discharge optical emission spectrometry (GDOES) for trace element verification.

• Creep rupture testing per ASTM E139 at 750°C/50 MPa.

• Microstructural analysis via SEM/EDS to confirm uniform carbide distribution.

Theory

The alloy’s exceptional performance is rooted in its metallurgical design:

• Solid Solution Strengthening: Nickel stabilizes the austenitic matrix, while chromium enhances oxidation resistance.

• Carbon-Driven Precipitation: Controlled carbon levels enable formation of (Ti,Al)C carbides at grain boundaries, pinning dislocations and delaying creep deformation.

• Aluminum-Titanium Synergy: Al and Ti combine with carbon to refine precipitates, improving high-temperature ductility and fracture toughness.

• Self-Healing Oxide Layer: Chromium oxide regenerates dynamically under thermal cycling, maintaining barrier integrity in aggressive environments.

• Grain Boundary Engineering: Optimized annealing processes produce coarse grains (ASTM 5-7), reducing grain boundary sliding at elevated temperatures.

Incoloy 800H wire is indispensable in industries requiring prolonged exposure to extreme heat and corrosive media:

• Petrochemical:

• Ethylene cracking furnace components, reformer tubes, and radiant coil supports.

• Wire mesh for sulfur recovery units (SRUs) and hydrocracker reactors.

• Power Generation:

• Gas turbine combustion chamber liners, exhaust valves, and superheater hangers.

• Nuclear reactor heat exchanger springs and control rod cladding.

• Heat Treatment:

• Fixtures for carburizing furnaces, annealing trays, and quench baskets operating above 900°C.

• Aerospace:

• Rocket engine combustion liners, afterburner components, and turbine blade retention wires.

• Chemical Processing:

• Catalyst support grids in nitric acid plants and syngas reactors.

1. Market Leader

   Top 5 in China's nonferrous metal industry

2. Flexible products

   Thousands of product specifications,Meet multiple needs of buyers

3. Low MOQ

   Can customize samples

4. Short production lead time, fast delivery of whole cabinet

5. Professional inspection equipment

   Before delivery, we will use spectrometers, tensile testers and other professional equipment to conduct a comprehensive inspection of the products to ensure that the goods are qualified for acceptance

6. Professional business team

   Quickly responds to customer inquiries,24-hour professional quotation online

   The salesperson will follow the customer's requirements for the use of the product,Professionally recommend more appropriate performance and price products to customers

7. Intact packaging

   Packaging according to customer needs.You can customize wooden boxes to ensure that the goods arrive at the destination in good condition

8. Various payment methods

   Facilitate customer payment

9. Get good reviews from customers

   Old customers have long-term cooperation,The longest is more than 7 years

10. Received various awards

    Google is very recognized by us,They give us awards every year