Products Features
Excellent high-temperature strength
Maintains high tensile and creep strength within the 500-900°C range, making it suitable for pressure vessels and piping systems subjected to long-term high-temperature loads, with performance superior to conventional stainless steels.
Good antioxidant and anti-carburization properties
A dense oxide film forms in high-temperature environments, exhibiting good oxidation resistance as well as resistance to carbon and nitrogen penetration. It is suitable for high-temperature applications such as petrochemical cracking tubes, conversion tubes, and heat treatment fixtures.
Good machining and welding properties
It has good hot and cold working properties and can be formed and welded using conventional processes. It is suitable for manufacturing complex parts such as furnace tubes, heat exchangers, flanges, fasteners, and high-temperature structural components.
Chloride ion stress corrosion cracking
The nickel-iron-chromium matrix, combined with a stable austenitic structure, provides excellent resistance to stress corrosion cracking.
Technical Specifications
Chemical Composition
|
Element |
Standard Requirements |
Notes |
|
Ni |
30.0 - 35.0% |
Matrix elements that provide high-temperature stability and corrosion resistance |
|
Cr |
19.0 - 23.0% |
Provide antioxidant and corrosion resistance capabilities |
|
Fe |
Surplus (approximately 39-45%) |
Structural support to reduce costs |
|
C |
≤ 0.10% |
Controlling carbon content affects intergranular corrosion performance |
|
Si |
≤ 1.00% |
Oxygen absorber |
|
Mn |
≤ 1.50% |
Deoxidizer, improve hot working properties |
|
P |
≤ 0.045% |
Impurity elements |
|
S |
≤ 0.015% |
Prevent hot brittleness |
|
Al |
0.15 - 0.60% |
Auxiliary reinforcement |
|
Ti |
0.15 - 0.60% |
Auxiliary reinforcement |
Physical Properties
|
Property |
Value/Range |
Test Conditions |
|
Density |
7.95 g/cm³ |
Room temperature (20°C) |
|
Melting Point |
1350 - 1400°C |
- |
|
Coefficient of Thermal Expansion (20-100°C) |
14.0 × 10⁻⁶ /K |
- |
Mechanical Properties (Annealed Condition, Typical Values)
|
Property |
Typical Value |
Specification |
|
Tensile Strength |
≥ 520 MPa |
ASTM B408 |
|
Yield Strength |
≥ 210 MPa |
ASTM B408 |
|
Elongation |
≥ 30% |
ASTM B408 |
|
Hardness |
≤ 85 HRB |
- |
High-temperature performance
Tensile strength remains above 300 MPa at 800°C.
Long-term Temperature Range
Recommended temperature range: -200°C to 900°C.
Maximum Intermittent Heat Resistance: Up to 1000°C.
Oxidation Resistance: It has good oxidation resistance below 1000°C, with a dense and well-adhered oxide film.
Carburization Resistance: Exhibits excellent carburization resistance in petrochemical cracking and heat treatment environments.
Application Fields
-
Petrochemical industry (cracking tubes, conversion tubes, heat exchangers)
-
Steam generators (nuclear and thermal power)
-
Heat treatment industry (furnace rolls, radiation tubes, baskets, fixtures)
-
High-temperature heating equipment (heaters, furnace tubes)
-
Nitric acid production facilities (nitric acid tail gas preheaters)
-
Automotive engine components (exhaust system parts)
-
Exhaust treatment systems (incinerators, heat exchangers)
-
Flanges, valves, and fasteners (high-temperature service conditions)
-
High-temperature seals and gaskets
-
Structural components requiring high high-temperature strength and carbon resistance
Delivery and Customization
We offer flexible and reliable supply chain solutions to ensure you receive Incoloy 800 materials that perfectly match your project requirements.
|
Form |
 Sheet/Plate
|
 Bar/Rod
|
 Seamless Pipe
|
 Strip/Sheet Coil
|
 Wire/Wire Rod
|
|---|---|---|---|---|---|
|
Conventional Range |
Thickness: 0.5 - 100 mm |
Diameter Φ6-500mm |
Outer diameter Φ10-300mm |
Thickness: 0.1 – 3.0 mm |
Diameter Φ0.5-10mm |
|
Customization Capability |
Special thick/thin rolling, ultra-wide plates; special surface treatment, fixed-length cutting |
Large-sized forged bars (up to Φ800 mm), special-shaped bars, and various heat treatment conditions |
Large-diameter thick-walled pipes, special alloy composition; Pipe end processing (beveling, fixed length) |
Different hardness conditions, special heat treatments (stabilization treatment, grain size control), acid-washed surfaces, electrolytic polishing, coatings, or special protective films |
Special surface treatment, precision drawing |
Why Choose Us? - Reliable engineering technology. Dependable delivery.
We are not just a supplier, but a trusted materials partner for you in China.
Vertically Integrated Production
Own 20,000㎡ facility with 10+ automated lines (8,000+ tons/year). In-house tooling & die center enables rapid customization and effective cost control - no middleman markup.
Strict Quality Control at Every Stage
Full traceability across key QC checkpoints throughout production. 100% compliant with ASTM/ASME, EN, and GB standards. Material test reports available with every shipment.
Reliable Delivery & Export Packaging
10+ years exporting to Europe, North America, Southeast Asia & Middle East with waterproof and anti-rust protection, combined with flexible shipping options ensures safe and on-time arrival.
Sample Validation Before Mass Production
We provide free samples for quality verification, allowing you to place bulk orders only after approval. We ensure consistency from sample to mass production by accurate dimensional measurement and transparent manufacturing.
FAQ
Q: What are the main advantages of Incoloy 800?
Q: What kind of heat treatment does Incoloy 800 require?
Q: What is the maximum working temperature?
Q: What is the thermal expansion coefficient?
Q: What is the difference from Incoloy 825?
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