Products Features
Low Thermal Expansion Coefficient (Low Expansion Property)
It has an extremely low coefficient of thermal expansion, enabling effective control of gap variations and thermal fatigue under high-temperature cyclic conditions. It is suitable for high-temperature components with strict dimensional stability requirements and offers better performance than traditional high-temperature alloys.
Outstanding High-temperature Strength and Creep Resistance
Through γ' phase precipitation strengthening, it maintains excellent tensile strength and creep resistance at high temperatures, making it suitable for rotating parts and structural components subjected to long-term high-temperature loads, outperforming conventional nickel-based alloys.
Good Antioxidant and Corrosion Resistance Properties
It exhibits good antioxidant and gas corrosion resistance in high-temperature environments. It also shows good corrosion resistance to chloride ions and various chemical media, making it suitable for gas turbines, aircraft engines, and industrial high-temperature environments.
Good Machining and Welding Properties
It has good hot working properties and can be formed and welded using conventional processes. It is suitable for manufacturing complex parts such as ring components, blades, fasteners, seals, and high-temperature structural parts.
Technical Specifications
Chemical Composition
|
Element |
Standard Requirements |
Notes |
|
Ni |
≥ 38.0% |
Matrix elements that provide high-temperature stability and corrosion resistance |
|
Co |
28.0 - 33.0% |
Enhance high-temperature strength and reduce the coefficient of thermal expansion |
|
Cr |
14.0 - 18.0% |
Provide antioxidant and corrosion resistance capabilities |
|
Fe |
22.0 - 29.0% |
Structural support to reduce costs |
|
Al |
0.30 - 1.00% |
Precipitation strengthening forms the γ' phase |
|
Nb |
2.50 - 3.50% |
Precipitation strengthening forms the γ' phase |
|
Ti |
≤ 0.40% |
Auxiliary reinforcement |
|
C |
≤ 0.05% |
Strict control to prevent intergranular embrittlement |
|
Si |
≤ 0.50% |
Oxygen absorber |
|
Mn |
≤ 0.50% |
Deoxidizer, improve hot working properties |
|
P |
≤ 0.015% |
Impurity elements |
|
S |
≤ 0.010% |
Prevent hot brittleness |
Physical Properties
|
Property |
Value/Range |
Test Conditions |
|
Density |
8.11g/cm³ |
Room temperature (20°C) |
|
Melting Point |
1320 - 1380°C |
- |
|
Coefficient of Thermal Expansion (20-700°C) |
13.2 × 10⁻⁶ /K |
- |
Mechanical Properties (Precipitation Hardened Condition, Typical Values)
|
Property |
Typical Value |
Specification |
|
Tensile Strength |
≥ 900 MPa |
ASTM B168 |
|
Yield Strength |
≥ 550 MPa |
ASTM B168 |
|
Elongation |
≥ 25% |
ASTM B168 |
|
Hardness |
≤ 35 HRC |
- |
High-temperature Performance
At 700°C, the tensile strength remains above approximately 600 MPa.
Long-term Temperature Range
Recommended -200°C to 760°C.
Maximum Intermittent Heat Resistance: Up to 800°C.
Oxidation Resistance: It has good oxidation resistance below 760°C, with a dense and well-adhered oxide film.
Creep Resistance: At 650-760°C and under moderate stress, its creep properties are superior to those of most precipitation-hardened stainless steels.
Application Fields
-
Gas turbine (rings, seals, fasteners)
-
Aircraft engine (turbine casings, seal rings, fasteners)
-
High-temperature fasteners and springs (bolts, studs, washers)
-
Industrial furnace components (radiant tubes, furnace rolls)
-
Heat treatment fixtures and baskets
-
High-temperature components of automotive engines (turbochargers)
-
Nuclear reactors (in-core components, fasteners)
-
Heat exchangers (high-temperature service conditions)
-
High-temperature seals and gaskets
-
High-temperature structural components with high dimensional stability requirements
Delivery and Customization
We offer flexible and reliable supply chain solutions to ensure you receive Inconel 783 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 Inconel 783?
Q: What kind of heat treatment does Inconel 783 require?
Q: What is the maximum operating temperature?
Q: What is the coefficient of thermal expansion?
Q: What is the difference from Inconel 625?
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