5083 aluminum discs, plates, and round sheets are precision-cut circular blanks made from certified marine-grade 5083 aluminum. As a high-magnesium Al-Mg alloy, 5083 offers excellent seawater corrosion resistance, high strength, and good weldability, and is widely used in shipbuilding, pressure vessels, and cryogenic applications.
Compared with rectangular plates, circular plates are better suited for machining flange blanks, tank bottoms, head plates, and sealing components, reducing machining allowance, improving material utilization, and ensuring dimensional accuracy for marine and heavy-duty structures.
The core advantages of 5083 aluminum discs and circular plates
- Suitable for marine and salt spray environments
- Meets the requirements of medium and high strength structures
- Adaptable to cryogenic and LNG operating conditions
- Reliable structural welding performance
- Multi-specification circular precision cutting
- Support customization of large diameter thick plates
Specifications of 5083 Aluminum Circle and Disc
Thickness Range: 3 mm – 150 mm (custom cutting available based on stock sheets)
Diameter Range: Φ100 mm – Φ3000 mm (Supports large diameter circular cutting)
Supply Temper: O / H111 / H116 / H321
Processing Method: Sheet metal cutting is the main form of supply; thin plates can be processed by punching, and forged discs are supported for special requirements.
Cutting Tolerance: Diameter tolerance can be controlled within ±1–3 mm (depending on thickness and size).
Edge Condition: Sheared edge, plasma-cut edge, waterjet-cut edge, CNC precision-machined edge
Surface Finish: Original board surface, lightly sanded, sandblasted (available upon request)
Chalco 5083 Aluminum Round Plate and Disc Forms
Standard Cut Round Disc
Standard-sized cutting discs, suitable for general structural processing and subsequent forming.
Large Diameter Round Plate
Large-diameter circular plates support the processing needs of heavy-duty structures and large components.
Thick Plate Round Blank
Thick, round blanks are suitable for processing high-strength and load-bearing structural components.
Precision Machined Round Plate
CNC precision-machined discs, supporting edge chamfering and dimensional accuracy control.
Ring Cut Plate
Circular cut sheet metal, custom processing is available according to inner and outer diameter dimensions.
Forged Round Component
Optional forged round parts are available for special structural requirements or custom needs.
Technical Data of 5083 Aluminum Circle and Round Plate
5083 aluminum alloy belongs to the Al-Mg series of high-strength and corrosion-resistant alloys, and is widely used in structural and marine engineering fields. The following are its typical chemical composition and mechanical properties (which may vary depending on the state and thickness), which can be used as a reference for project selection.
| Technical Data of 5083 Aluminum | |
| Element | Content range |
| Mg | 4.0 – 4.9 |
| Mn | 0.4 – 1.0 |
| Cr | 0.05 – 0.25 |
| Fe | ≤ 0.40 |
| Si | ≤ 0.40 |
| Cu | ≤ 0.10 |
| Zn | ≤ 0.25 |
| Ti | ≤ 0.15 |
| Al | margin |
| Mechanical Properties (Typical – H116) | |
| Performance | Typical value |
| Tensile strength (UTS) | ≥ 275 MPa |
| Yield strength (YS) | ≥ 215 MPa |
| Elongation | ≥ 10% |
| Physical Properties | |
| Project | Numerical values |
| Density | 2.66 g/cm³ |
| Elastic modulus | 70 GPa |
| Thermal conductivity | ~121 W/m·K |
| Melting point range | 570 – 640°C |
*Technical Notes
- The above data are typical values for the H116 state.
- Performance may vary depending on thickness.
- The performance of circularly cut products is based on the original sheet material properties.
- Material certificates and test reports can be provided.
Custom Cutting and Machining Capability
Chalco possesses comprehensive capabilities in sheet metal processing and structural component manufacturing, and can provide high-precision circular machining solutions to meet the needs of marine and heavy-duty structural applications, based on different thicknesses, sizes, and structural requirements.
Large diameter and thick plate processing capabilities: Supports precision circular cutting of medium and thick plates and ultra-thick plates, and can process large diameter discs and structural-grade circular blanks to meet the processing needs of large structural parts.
Multi-process cutting system: Combining waterjet, plasma and mechanical processing, the optimal solution is selected according to the plate thickness and precision requirements, taking into account both dimensional stability and processing efficiency.
CNC finishing and edge control: can perform edge trimming, chamfering, inner and outer diameter finishing and dimensional correction to ensure assembly accuracy and subsequent structural processing stability.
Ring and flange blank processing: We support customized processing of inner and outer diameters and ring cutting. We can pre-process flange blanks according to drawings to reduce subsequent processing steps for customers.
Precision control and batch consistency: Establish a size control and quality traceability system to ensure the stability of diameter, thickness and edge processing accuracy, and meet the batch delivery requirements of engineering projects.
Forging capabilities support: For special load-bearing or structural requirements, we can provide forged circular component solutions to meet customized structural needs.
Applications of 5083 Aluminum Circle and Round Plate
Shipbuilding and Marine Structures
5083 aluminum round plates are widely used in ship hull structures, hatch covers, and marine flange blanks.
Chalco supports precision machining of inner and outer diameters, edge chamfering, and pre-processing based on drawings, reducing on-site machining and improving assembly efficiency.
Pressure Vessel and Head Forming Applications
Circular plates are used as head blanks or base plates in pressure vessels and storage tanks.
Chalco supports precision cutting and pre-processing of thick plates for spinning or stamping, ensuring stable forming performance.
LNG and Cryogenic Equipment
5083 performs reliably in cryogenic environments and is suitable for LNG tank bottom plates and structural components.
Chalco supports large-diameter thick plate machining and dimensional control to ensure consistency and reliability.
Heavy Structural and Flange Components
Suitable for large flange blanks and ring-shaped load-bearing components.
Chalco supports ring cutting, internal hole machining, and flange blank pre-processing, reducing machining allowance and improving material utilization.
Related Products—Other Available Forms of 5083 Aluminum
In addition to round plates and sheets, Chalco can sustainably supply a variety of 5083 aluminum alloy product forms, relying on its stable plate inventory and processing system, to meet the bulk demand of different structural designs and engineering projects.
Selection Recommendations—5083 vs 5052 Aluminum Alloy
5083 and 5052 both belong to the Al-Mg series aluminum alloys and have good corrosion resistance and weldability, but they differ significantly in strength grade and structural application.
| Comparison Projects | 5083 aluminum alloy | 5052 aluminum alloy |
| Alloy Series | Al-Mg series (high magnesium) | Al-Mg system |
| Intensity level | High capacity, suitable for load-bearing structural components | medium intensity |
| Marine environmental adaptability | Excellent, commonly used in ship structures | good |
| Low temperature performance | Stable performance at low temperatures | generally |
| Welding performance | good | good |
| Typical applications | Ship structure, pressure vessel, LNG storage tank | General structural components, formed parts, light-duty applications |
| Applications of round plates | Flange blanks, head base plates, heavy-duty structural discs | Lightweight structural discs or molded parts |
When projects involve marine environments, cryogenic conditions, or require high structural strength, 5083 is usually the preferred choice; for general structural or forming applications, 5052 offers a good balance between cost and processing. If you have any questions about material condition selection or processing methods, please provide drawings or technical requirements, and we will provide targeted material and processing recommendations.
Frequently Asked Questions (FAQ)
Is 5083 aluminum alloy suitable for marine environments?
Yes. 5083 is a marine-grade Al-Mg alloy with excellent resistance to seawater corrosion and is widely used in shipbuilding and marine engineering structures.
What is the difference between 5083 and 5052?
5083 has higher strength and better marine and low-temperature performance, making it more suitable for structural and pressure-bearing applications.
Can you provide large-diameter 5083 discs?
Yes. We support cutting and processing large-diameter thick plates, and specifications can be customized according to project requirements.
What temper is recommended for the tank bottom plate or structural components?
Common tempers include H111, H116, and H321. The specific choice should be determined based on strength and welding requirements.
Do you support forged circular components?
Forged circular component solutions are available for special load-bearing or structural requirements.
Choose Chalco as your supplier for 5083 round products
Marine-grade certified materials: All 5083 products are derived from certified boards, ensuring stable and reliable performance.
Complete material traceability system: Supports traceability of furnace number and production batch, meeting the quality management requirements of engineering projects.
Stable inventory and continuous supply capacity: With sufficient sheet metal inventory and processing capacity, it can support the continuous delivery of standard and customized orders.
Flexible processing and customization support: Supports precision cutting of multiple specifications and pre-processing of structures to meet different engineering needs.
Mature export and project support experience: Possesses extensive experience in supplying international engineering projects, ensuring stable delivery and quality.
If you need to confirm the diameter, thickness, or specific processing requirements for your project, please feel free to contact us for technical support and a quote.
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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