Incoloy 800 (UNS N08800 / 1.4876) - High-temperature resistant nickel-iron-chromium alloy for furnace parts, heat exchangers, & chemical processing. ZYTC supplies bars, plates, tubes & more. Get a quote!
Delivery :
FOB
minimum order :
50 kilograms
Supply Ability :
5000kilograms / Month
Stock Time :
7-10Day
Country of Origin :
CHINA
Quantity :
add to cart
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Alloy 800 (UNS N08800 / 1.4876) is a nickel-iron-chromium superalloy designed for reliable service in high-temperature and corrosive environments. With a fully austenitic structure, this material maintains stable mechanical properties and resists common degradation mechanisms such as oxidation, carburization, and chloride stress-corrosion cracking.
1. Product Specifications & Physical Data
ZYTC Alloy supplies UNS N08800 in standard mill forms and custom configurations for fabricators and OEMs serving the thermal processing, chemical, and power generation sectors.
Available Forms: Bar (round, flat), plate, sheet, strip, seamless/welded tube, welding wire, forging stock, and custom shapes.
Chemical Composition (Nominal)
Content (%)
Nickel (Ni)
30 - 35
Chromium (Cr)
19 - 23
Iron (Fe)
≥39.5
Manganese (Mn)
≤1.5
Others
Remainder
Physical Property
Metric
Imperial
Density
7.94 g/cm³
0.287 lb/in³
Mechanical Properties (Annealed)
Metric
Imperial
Tensile Strength
600 MPa
87 ksi
Yield Strength
275 MPa
39.9 ksi
Elongation at Break
45%
45%
2. Operating Conditions & Selection Criteria
Engineers select Alloy 800 (UNS N08800 / 1.4876) when standard stainless steels cannot meet the combined demands of heat and corrosion. The alloy's high nickel and chromium content provides a protective oxide layer that remains adherent under thermal cycling.
Temperature Range: Effective for continuous service up to 980°C (1800°F); suitable for intermittent exposure up to 1150°C (2100°F).
Corrosion Resistance: Resists oxidation, carburization, and nitriding atmospheres. The high nickel content provides immunity to chloride stress-corrosion cracking and sigma phase embrittlement.
Structural Stability: The austenitic microstructure resists grain growth and phase transformation during prolonged high-temperature exposure, ensuring consistent mechanical performance over time.
3. Fabrication & Material Comparison
Incoloy 800 bridges the gap between stainless steels and higher-nickel alloys, offering good fabricability with enhanced high-temperature properties.
Machining: Work-hardens during cutting; requires rigid setups and positive feed rates. Carbide tooling recommended for production runs.
Welding: Readily welded using GTAW (TIG), SMAW (stick), and GMAW (MIG) processes. Matching filler metals (such as ERNiCr-3) maintain corrosion resistance and mechanical properties in the weld zone.
Forming & Heat Treatment:
Hot Working: 871-1232°C (1600-2250°F)
Annealing: 982°C (1800°F) followed by air cooling
Cold Working: Responds well to standard shop forming operations
Material Alternative: Compared to 304/310 stainless steels, Incoloy 800 offers superior resistance to chloride attack and high-temperature creep. When compared to Alloy 600, it provides similar performance at a lower cost point for many applications.
Contact ZYTC Alloy for certified Incoloy® 800 with full traceability, technical datasheets, and competitive pricing on standard sizes or custom-fabricated components.
