Products Features
Excellent high-temperature strength
With precipitation strengthening through γ' phase, it exhibits excellent tensile and yield strength in the 650-700°C range, outperforming conventional austenitic stainless steels. It is suitable for rotating parts and structural components subjected to long-term high-temperature loads.
Good high-temperature oxidation resistance
Exhibits good oxidation resistance below 700°C, forming a dense oxide layer on its surface, making it suitable for high-temperature environments such as aircraft engine exhaust systems and turbochargers.
Excellent anti-loosening performance
It exhibits excellent stress relaxation resistance at high temperatures, making it an ideal material for manufacturing high-temperature fasteners (such as bolts and studs), which are less likely to loosen with long-term use.
Good machining and welding properties
It has good hot and cold working properties and can be formed, machined, and welded using conventional processes. It is suitable for manufacturing complex parts such as discs, blades, fasteners, and shafts.
Technical Specifications
Chemical Composition
|
Element |
Standard Requirements |
Notes |
|
Ni |
24.0 – 27.0% |
Elements that form the γ' strengthening phase, providing high-temperature stability |
|
Cr |
13.5 – 16.0% |
Provide antioxidant and corrosion resistance capabilities |
|
Fe |
Base element |
Matrix elements, reduce costs |
|
Ti |
1.90 – 2.35% |
Precipitation strengthening forms the γ' phase (Ni₃(Al, Ti)) |
|
Al |
0.10 – 0.50% |
Precipitation strengthening forms the γ' phase |
|
Mo |
1.00 – 1.50% |
Solid solution strengthening to improve high-temperature strength |
|
V |
0.10 – 0.50% |
Refine grain structure to enhance precipitation hardening effect |
|
C |
≤ 0.08% |
Strict control to prevent intergranular embrittlement |
|
Si |
≤ 1.00% |
Oxygen absorber |
|
Mn |
≤ 2.00% |
Deoxidizer, improve hot working properties |
|
P |
≤ 0.025% |
Impurity elements |
|
S |
≤ 0.025% |
Prevent hot brittleness |
|
B |
0.001 – 0.010% |
Minor additions to enhance grain boundary strength |
Physical Properties
|
Property |
Value/Range |
Test Conditions |
|
Density |
7.94 g/cm³ |
Room temperature (20°C) |
|
Melting Point |
1320 - 1390°C |
- |
|
Coefficient of Thermal Expansion (20-100°C) |
16.0 × 10⁻⁶ /K |
- |
Mechanical Properties (Annealed Condition, Typical Values)
|
Property |
Typical Value |
Specification |
|
Tensile Strength |
≥ 900 MPa |
ASTM B564 / B637 |
|
Yield Strength (0.2% Offset) |
≥ 550 MPa |
ASTM B564 / B637 |
|
Elongation |
≥ 25% |
ASTM B564 / B637 |
|
Hardness |
≤ 35 HRC |
- |
High-temperature performance
At 650°C, the tensile strength remains above approximately 700 MPa, and the yield strength is about 500 MPa.
Long-term usage temperature range: Recommended -250°C to 700°C (in precipitation-hardened condition).
Maximum intermittent temperature resistance: Up to 700°C (primarily oxidation resistance).
Antioxidation: It exhibits good antioxidant properties below 700°C, with a dense and well-adhered oxide film.
Stress relaxation resistance: Within the 500-650°C range, it exhibits superior stress relaxation resistance compared to Inconel 718 and X-750, making it suitable for high-temperature fasteners.
Application Fields
-
Aerospace Engine: Turbine disks, compressor disks, blades, casings, fasteners (bolts, studs)
-
Gas Turbine: High-temperature fasteners, seal rings, structural components
-
High-Temperature Fasteners and Springs: Bolts, studs, washers, springs (high anti-loosening requirements)
-
Automotive Industry: Turbocharger turbine wheels, high-temperature bolts
-
Nuclear Reactors: In-core components, fasteners, control rod drive mechanism parts
-
Petrochemical Industry: High-temperature valves, pipe flanges, reactor fasteners
-
Heat Treatment Fixtures: Material baskets, jigs and fixtures (below 700°C)
-
Industrial Furnace Components: Furnace rolls, radiation tube supports
-
Low-Temperature Environments: Liquid hydrogen/liquid oxygen tank fasteners (maintain good toughness at -250°C)
-
Structural components with high requirements for high-temperature strength and anti-loosening
Delivery and Customization
We offer flexible and reliable supply chain solutions to ensure you receive INCOLOY A-286 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 A-286?
Q: What heat treatment is required for INCOLOY A-286?
Q: What is the maximum operating temperature?
Q: What is the thermal expansion coefficient?
Q: What is the difference from INCONEL 718 ?
Hot Tags: incoloy a-286, China incoloy a-286 manufacturers, suppliers, factory
