High-strength 1163/1163T aluminum alloy is designed for aerospace structural components. It undergoes optimized heat treatment in sheet and plate forms, providing exceptional tensile strength and long-term fatigue performance. It is suitable for underwing skin, fuselage skin, and other critical load-bearing structural components.
Chemical & Mechanical Properties of 1163 aluminum alloy (ГОСТ 4784-97)
1163 aluminum alloy mainly consists of aluminum (Al), copper (Cu), magnesium (Mg), with strict control of silicon (Si) and iron (Fe) to ensure purity and performance stability.
| Chemical composition of 1163 alloy | |
| Element | Content range (mass%) |
| Al | margin |
| Cu | 4.1–4.5 |
| Mg | 1.3–1.6 |
| Mn | 0.5–0.8 |
| Fe | ≤0.15 |
| Si | ≤0.1 |
| Ti | 0.01–0.07 |
| Zn | ≤0.1 |
| Other impurities | ≤0.1 |
Through optimized heat treatment, 1163 aluminum alloy offers superior mechanical properties and long-term fatigue load-bearing capacity, making it ideal for aerospace structural components and critical load-bearing parts. Common supply conditions include 1163T and 1163RDTB, suitable for different sheet thicknesses and processing requirements.
| Mechanical properties (plate condition, T351 / 1163T for thick plates) | |||
| Performance indicators | Numerical range | Unit | Illustrate |
| Tensile strength σb | 600–650 | MPa | longitudinal direction of the board |
| Yield strength σ0.2 | 530–570 | MPa | Longitudinal direction |
| Elongation δ | 11–13 | % | Elongation in the length direction |
| Elastic modulus | 64–66 | GPa | Equal strength state |
| Fatigue life | ~160,000 | cycle | High-cycle fatigue test results |
| Fracture toughness KcY | 145 | MPa·√m | Thick plate T351 status |
The high tensile strength and excellent fatigue properties of 1163 aluminum alloy make it reliable in wing underskin, fuselage skin, and other long-term load-bearing structural components. Customers can choose different sheet thicknesses and conditions according to project requirements and enjoy customized cutting and surface treatment services to ensure stable performance of parts throughout their service life.
1163 aluminum sheet (ГОСТ 4784-97)
Offering a variety of sheet metal conditions, specifically designed for critical load-bearing structures in aerospace, ensuring uniform thickness and stable directional mechanical properties, and supporting customized heat treatment and surface treatment to meet the engineering needs of sheet metal of different thicknesses and complex structural components, ensuring long-term fatigue life and reliability.
Various thicknesses, widths, and lengths are available to meet project design requirements.
Supports selection of cutting, surface treatment, and heat treatment conditions to ensure part compatibility.
| Board condition | Illustrate | Typical applications |
| 1163 | Basic alloy state | Research and development or experimental reference |
| 1163T | Standard heat-treated sheet material | Sheet metal/thin sheet metal supply, wing skin, fuselage skin |
| 1163РДТВ | Thick plate special state | Thick plates are supplied to ensure balanced mechanical properties in the longitudinal, transverse, and thickness directions. |
Properties and directionality of 1163 aluminum thick plate
- Thick plates (>70 mm) provide uniform cooling and are suitable for critical aerospace components subjected to long-term fatigue loads.
*Jump to view [Microstructure and Specific Technical Parameters of the Board]
Application scenarios and typical use cases of 1163 aluminum alloy (ГОСТ 4784-97)
1163 aluminum alloy is widely used in aerospace and industrial key structural components due to its high strength and long-term fatigue performance.
Wing skin
fuselage skin
Long-term fatigue load-bearing parts
Typical application demonstration
1163 aluminum alloy is widely used in aerospace structural components and is suitable for critical load-bearing parts of various transport aircraft and regional jets, such as Il-76, Il-96, Tu-204, An-148 and SSJ-100.
- Il-76 and Il-96 (large transport aircraft)
- Tu-204, An-148, SSJ-100 (civilian/regional airliners)
Chalco 1163 aluminum alloy products have established partnerships with numerous aerospace and high-end engineering projects, providing sheet metal, thick plates, and custom machining services to ensure the reliable performance of wing skin, fuselage skin, and other long-term fatigue-bearing components, meeting diverse engineering needs.
Besides aerospace, 1163 aluminum alloy can also be used in rail transportation and lightweight automotive components, providing high-strength solutions for critical structures subjected to long-term fatigue. Chalco offers 1163 alloy in various forms, including plates, bars, and profiles, to flexibly adapt to different project needs. Project inquiries are welcome.
Advantages of Chalco 1163 aluminum alloy (ГОСТ 4784-97)| material performance and reliability
1163 aluminum alloy exhibits significantly improved crack resistance and long-term fatigue life through optimized heat treatment and uniform strengthening phase distribution. Chalco further enhances these properties by employing multi-stage heat treatment, thick plate cooling control, and microstructure regulation to ensure high strength and structural stability in critical load-bearing areas of sheet metal, thick plates, and custom-made semi-finished products, meeting long-term service requirements.
Key technological advantages and engineering value
- Multi-stage heat treatment: quenching + natural aging + artificial aging; improving service life and long-term load-bearing capacity.
- Thick plate cooling control: ensuring balanced mechanical properties in the longitudinal, transverse, and thickness directions; ensuring the stability and reliability of key structural components.
- Microstructure regulation: Uniform strengthening phase distribution and particle control; enhancing structural stability and fatigue performance
- Surface treatment: Aluminum cladding or stress-relief treatment; supports sheet metal, thick plates, and custom semi-finished products, enhancing durability.
Sheet material condition and key parameters
| Board condition | Thickness range (mm) | Tensile strength σb (MPa) | Engineering Applications |
| 1163 | 10–20 | 600–650 | Thin Plate/Sheet Material R&D Reference |
| 1163T | 10–20 | 600–650 | Thin sheet/plate supply, wing skin, fuselage skin |
| 1163T | 40–70 | 590–640 | Thick plate supply, key load-bearing components in aviation |
| 1163РДТВ | 70–120 | 580–630 | Specialized for thick plates to ensure balanced directional mechanical properties. |
Simplified table of microstructure of sheet metal
| Index | Describe | Engineering significance |
| Uniform particle distribution | The particle size inside the board is uniform | Improve crack resistance and ensure mechanical balance in the thick plate direction. |
| Strengthening phase existence | Uniform strengthening phase distribution | Enhance fatigue load capacity |
| Heat treatment stability | T351 / T351R / РДТВ undergoes annealing and quenching treatment. | Ensuring long service life, suitable for critical structural components |
Delivery capability and quality assurance of 1163 aluminum alloy (ГОСТ 4784-97)
Chalco 1163 aluminum alloy offers flexible and efficient supply capabilities to meet the diverse needs of aerospace and high-strength engineering projects:
Inventory and Fast Delivery: We maintain a stock of sheet and thick plates to support urgent project needs.
Custom Processing: Offers options for cutting, surface treatment, and heat treatment conditions to meet individual project needs.
Project consulting and technical support: Providing full-process technical guidance from material selection to engineering application solutions.
Rapid Response and Project Feasibility: Ensuring that client solutions can be implemented and shortening project cycles.
Chalco 1163 aluminum alloy strictly adheres to Russian Standard GOST 4784-97 and VIM standards to ensure the long-term reliability of sheet metal, thick plates, and semi-finished products in critical load-bearing structural components.
We meticulously control the heat treatment process and the orientation of thick plates to ensure balanced mechanical properties in the longitudinal, transverse, and thickness directions. We also conduct rigorous tests on mechanical properties, fatigue life, crack propagation resistance, and corrosion performance to ensure that the materials meet the requirements for high strength and long-term use.
Order 1163 aluminum alloy (ГОСТ 4784-97)
If you have project needs for 1163 aluminum sheet, plate, or custom semi-finished products, Chalco offers rapid response and professional support to help your engineering solutions be successfully implemented.
Project Consulting: Obtain professional advice on material selection and engineering applications
Get a quote: Quickly obtain prices for sheet metal, thick plates, and custom processing.
Customized solutions: Providing personalized materials and processing solutions tailored to project requirements.
Feel free to contact us anytime for project consultation, quotation and customized solutions for 1163 aluminum alloy.
Chalco can provide you the most comprehensive inventory of aluminum products and can also supply you customized products. Precise quotation will be provided within 24 hours.
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