Inconel 783 Plates Low Expansion Alloy Plate High Temperature Stability Turbine Application
Product Description – Inconel 783 Plates Nickel Iron Alloy Plate
Inconel 783 Plates are precipitation-hardened nickel-iron-cobalt alloy plates engineered for applications requiring a unique combination of thermal stability, controlled expansion, and high-temperature strength. Unlike conventional nickel-based alloys, Inconel 783 Plates are specifically designed to maintain low and stable thermal expansion coefficients while delivering reliable mechanical performance at elevated temperatures. This makes them particularly suitable for precision components exposed to thermal cycling and dimensional stress.
The alloy achieves its performance through a carefully balanced composition that includes aluminum and niobium for precipitation strengthening, along with chromium for oxidation resistance. Inconel 783 Plates demonstrate excellent resistance to oxidation and scaling at temperatures up to approximately 700°C, making them suitable for gas turbine components, power generation systems, and high-temperature structural applications.
In regions such as Europe and North America where high-efficiency energy systems demand dimensional stability, Inconel 783 Plates are widely used in turbine casings, exhaust structures, and sealing components. Their ability to maintain consistent mechanical properties under thermal exposure reduces distortion and improves long-term reliability. Additionally, these plates offer good fabrication characteristics in the solution-treated condition, allowing for forming and machining before final aging treatment. For applications requiring a balance of strength, oxidation resistance, and low thermal expansion, Inconel 783 Plates provide a technically advanced and application-focused solution.
Inconel 783 Plates Specification Table – Dimensions & Standards
| Parameter |
Value |
| Thickness |
3 mm – 80 mm |
| Width |
1000 mm – 2500 mm |
| Length |
2000 mm – 6000 mm |
| Surface |
Hot Rolled, Pickled, Machined |
| Form |
Plate |
| Standards |
AMS 5896, UNS R30783 |
Inconel 783 Plates Chemical Composition (Alloy 783)
| Element |
Content (%) |
| Nickel (Ni) |
24.0 – 28.0 |
| Cobalt (Co) |
24.0 – 28.0 |
| Iron (Fe) |
Balance |
| Chromium (Cr) |
2.8 – 3.5 |
| Aluminum (Al) |
5.4 – 6.0 |
| Niobium (Nb) |
2.5 – 3.0 |
| Titanium (Ti) |
≤ 0.5 |
| Manganese (Mn) |
≤ 0.5 |
| Silicon (Si) |
≤ 0.5 |
| Carbon (C) |
≤ 0.05 |
| Boron (B) |
≤ 0.01 |
Inconel 783 Plates Mechanical Properties
| Property |
Value |
| Tensile Strength |
≥ 800 MPa (aged condition) |
| Yield Strength |
≥ 500 MPa |
| Elongation |
≥ 15% |
| Hardness |
≤ 35 HRC |
Inconel 783 Plates Physical Properties
| Property |
Value |
| Density |
7.9 g/cm³ |
| Melting Range |
1350 – 1400°C |
| Thermal Conductivity |
13.0 W/m·K |
| Elastic Modulus |
200 GPa |
| Coefficient of Thermal Expansion |
10.5 µm/m·K (20–100°C) |
Inconel 783 Plates Key Features – Low Expansion Alloy Advantages
- Low and stable thermal expansion for dimensional control
- High strength through precipitation hardening
- Excellent oxidation resistance at elevated temperatures
- Good resistance to thermal fatigue and cyclic loading
- Stable performance up to ~700°C environments
- Suitable for precision high-temperature components
Inconel 783 Plates Applications – Alloy 783 Plate Uses
Inconel 783 Plates for Gas Turbine Components
Used in casings, seals, and structural parts requiring thermal stability
Inconel 783 Plates in Power Generation Systems
Applied in high-temperature equipment and energy systems
Inconel 783 Plates for Aerospace and Thermal Systems
Suitable for components exposed to cyclic thermal stress
Inconel 783 Plates in Industrial Heating Equipment
Used in furnaces and high-temperature structural assemblies
Inconel 783 Plates for Precision Engineering Applications
Applied where dimensional stability under heat is critical
Inconel 783 Plates Frequently Asked Questions (FAQ)
What makes Inconel 783 Plates unique compared to other Inconel alloys?
They are designed for low thermal expansion while maintaining high strength at elevated temperatures.
Are Inconel 783 Plates suitable for high-temperature environments?
Yes, they perform well in temperatures up to around 700°C with good oxidation resistance.
Can Inconel 783 Plates be heat treated?
Yes, they are precipitation hardened through aging treatment after fabrication.
Where are Inconel 783 Plates commonly used?
They are widely used in gas turbines, power generation, and precision thermal systems.
Do Inconel 783 Plates resist thermal fatigue?
Yes, they provide good resistance to thermal cycling and fatigue.
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