Xi'an Dongmeng Group Co., Ltd. is one of the most reliable manufacturers and suppliers of aluminum alloy 5083 in China, also supports customized service. With abundant experience, we warmly welcome you to wholesale cheap products in stock here and get free sample from our factory. For price consultation, contact us.
5083 Aluminum Alloy Supplier – High-Strength Plate, Sheet & Custom Processing
Marine-Resistant Aluminum | EN AW-5083 | ASTM B209 / B928 | H111, H116 & H321
5083 Aluminum Alloy for Marine, Transportation & Industrial Fabrication
Xi'an Dongmeng Group Co., Ltd. is a China-based supplier and exporter of 5083 aluminum alloy products for international manufacturers, shipyards, engineering contractors, and industrial material distributors.
We supply 5083 aluminum sheet, plate, and cut-to-size blanks for applications requiring a combination of high strength, excellent weldability, low weight, and resistance to marine and industrial corrosion.
Also known as AA 5083, EN AW-5083, and AlMg4.5Mn0.7, this aluminum-magnesium alloy is commonly specified for shipbuilding, offshore structures, transportation equipment, welded tanks, and cryogenic applications.
Our supply services include material selection, custom sizing, plate cutting, inspection coordination, mill test documentation, and export packaging.
For marine applications, 5083-H116 and 5083-H321 products can be sourced against applicable ASTM B928/B928M requirements, subject to the ordered size and project specification.
Request a quotation for 5083 aluminum alloy with your required temper, dimensions, quantity, and material standard.
What Is 5083 Aluminum Alloy?
5083 is a high-magnesium, non-heat-treatable aluminum alloy in the 5xxx series. It contains approximately 4.0–4.9% magnesium, with manganese and chromium additions contributing to its strength and metallurgical characteristics.
Unlike heat-treatable aluminum alloys such as 6061 and 6082, 5083 does not achieve its strength through solution heat treatment and artificial aging. Its mechanical properties depend on alloy chemistry, strain hardening, stabilization, product form, and thickness.
5083 is particularly valuable for welded structural applications because it combines good fabrication characteristics with relatively high strength and strong resistance to seawater corrosion.
Key Material Advantages
High strength-to-weight ratio: Suitable for structural fabrication where reducing dead weight is important.
Excellent weldability: Compatible with commonly used MIG and TIG welding processes when appropriate procedures and filler metals are selected.
Marine corrosion resistance: Well suited to seawater and coastal environments when the proper temper and corrosion requirements are specified.
Low-temperature toughness: Suitable for engineering applications involving cryogenic service, subject to the governing design code.
Good fabrication flexibility: Available in conditions suited to forming, cutting, welding, and machining.
Industrial supply flexibility: Custom dimensions, processing, inspection documentation, and international shipment support.
Available 5083 Aluminum Product Forms & Supply Specifications
We focus on supplying flat-rolled 5083 aluminum products and processed blanks. Other product forms can be evaluated against manufacturing availability and applicable standards.
| Product Form | Indicative Dimensions | Relevant Tempers | Supply / Processing |
|---|---|---|---|
| Aluminum Sheet | Thickness and widths according to order | O, H111, H116, H321 where applicable | Standard sheets, cut sheets |
| Aluminum Plate | 3–200 mm thickness, subject to availability | O, H111, H112, H116, H321 within applicable limits | Full plates, cut plates |
| Precision-Cut Blanks | Drawing-dependent | According to original plate | Saw cutting, CNC profiling |
| Bar / Rod | Diameter and length on request | Product-specific temper | Subject to mill verification |
| Extruded Profiles | Custom section on request | Product-specific temper | Feasibility and tooling review |
Current advertised flat-product supply capability:
Thickness: 3–200 mm
Width: up to 2000 mm
Length: standard or cut to project requirements
Surface: mill finish
Additional processing: custom cutting, edge preparation, and other services subject to specification
These are indicative procurement ranges, not a guarantee that every temper is available at every thickness. Final dimensions, tolerances, and material properties must be confirmed against the ordered standard.
Common Purchase Configurations
5083 aluminum can be quoted for sheet and plate dimensions such as 3 mm, 5 mm, 6 mm, 8 mm, 10 mm, 12 mm, 15 mm, 20 mm, 25 mm, 30 mm, and 50 mm, depending on temper and availability.
Common width and length requests include 1000 × 2000 mm, 1250 × 2500 mm, 1500 × 3000 mm, and 2000 × 6000 mm.
These dimensions are examples of buyer specifications, not a live inventory list.
5083 Aluminum Temper Selection Guide
Selecting the correct temper is essential because identical alloy chemistry does not guarantee identical mechanical properties, fabrication behavior, or marine corrosion certification.
| Temper | Material Condition | Selection Priority | Common Applications |
|---|---|---|---|
| 5083-O | Annealed | Formability and ductility | Formed components, tanks |
| 5083-H111 | Slightly strain-hardened after annealing | Forming and welded fabrication | Tank bodies, structural panels |
| 5083-H112 | Strain-hardened during production | General industrial plate requirements | Heavy plate, industrial structures |
| 5083-H116 | Special strain-hardened condition with marine corrosion requirements | Marine hull and seawater exposure | Hull plating, decks, offshore structures |
| 5083-H321 | Strain-hardened and stabilized marine condition | Certified marine fabrication | Hulls, bulkheads, marine structures |
5083-H111
5083-H111 is frequently chosen when forming and fabrication flexibility are important. It is a practical option for transportation components, formed plate assemblies, and selected tank applications.
5083-H116
5083-H116 is commonly specified for marine sheet and plate requiring controlled resistance to exfoliation and intergranular corrosion. It is particularly relevant where structural components may experience frequent or continuous seawater exposure.
5083-H321
5083-H321 is a strain-hardened and stabilized temper used in marine fabrication. Like H116, it can be supplied under marine service requirements when the correct standard, product form, and applicable corrosion testing are specified.
Engineering Selection Note: H116 and H321 should not be treated as interchangeable solely because they share the same alloy number. Confirm the project specification, classification requirements, mechanical properties, thickness, and inspection documentation before substituting one temper for another.
Chemical Composition of Aluminum Alloy 5083
The following table summarizes the nominal chemical composition limits commonly associated with 5083 aluminum.
| Element | Chemical Composition (wt. %) |
|---|---|
| Magnesium (Mg) | 4.00–4.90 |
| Manganese (Mn) | 0.40–1.00 |
| Chromium (Cr) | 0.05–0.25 |
| Silicon (Si) | ≤ 0.40 |
| Iron (Fe) | ≤ 0.40 |
| Copper (Cu) | ≤ 0.10 |
| Zinc (Zn) | ≤ 0.25 |
| Titanium (Ti) | ≤ 0.15 |
| Other Elements | Subject to specified standard |
| Aluminum (Al) | Balance |
The final acceptance limits must follow the applicable material standard and the chemical analysis shown on the mill certificate.
Mechanical Properties of 5083 Aluminum
Mechanical properties vary with product form, temper, thickness, and the applicable standard.
The values below are reference minimums for selected flat-rolled 5083 products. They must not be applied outside their stated thickness ranges.
| Temper | Reference Thickness | Tensile Strength, Min. | 0.2% Yield Strength, Min. |
|---|---|---|---|
| 5083-O | 1.2–40 mm | 275 MPa | 125 MPa |
| 5083-H116 | 4–40 mm | 305 MPa | 215 MPa |
| 5083-H321 | 4–40 mm | 305 MPa | 215 MPa |
| 5083-H116 | Over 40–80 mm | 285 MPa | 200 MPa |
| 5083-H321 | Over 40–80 mm | 285 MPa | 200 MPa |
Important: These are illustrative reference values for the listed thickness ranges, not a complete ASTM B209 or ASTM B928 compliance table. Required minimum and maximum tensile values, elongation, test orientation, and test methods must be checked against the exact standard edition and ordered dimensions.
For H111, H112, heavy plates, extrusions, and other product forms, mechanical property limits must be verified separately.
General Physical Properties
| Property | Typical Value |
|---|---|
| Density | Approximately 2.66 g/cm³ |
| Elastic Modulus | Approximately 70–72 GPa |
| Alloy Family | 5xxx Aluminum-Magnesium |
| Heat Treatment Response | Non-heat-treatable |
| Weldability | Excellent with suitable procedures |
| Seawater Corrosion Resistance | Excellent when correctly specified |
| Electrical Conductivity | Lower than commercially pure aluminum |
Physical values are indicative and should not replace project engineering design data.
Applicable Material Standards
5083 aluminum may be supplied under different standards depending on its product form and intended service.
| Standard | Scope / Application |
|---|---|
| ASTM B209/B209M | Aluminum alloy flat sheet and plate |
| ASTM B928/B928M | High-magnesium aluminum alloy products for marine and similar environments |
| EN 573-3 | Chemical composition and alloy designations |
| EN 485-1 | Technical conditions for inspection and delivery of flat products |
| EN 485-2 | Mechanical properties of flat products |
| EN 485-3 / EN 485-4 | Dimensional and shape tolerances for applicable flat products |
| EN 515 | Aluminum temper designations |
| ASTM B221/B221M | Extruded products, where applicable |
| EN 10204 3.1 | Inspection certificate type for agreed material supply |
ASTM B209 vs. ASTM B928: What Buyers Need to Know
ASTM B209/B209M is a general specification for aluminum sheet and plate.
ASTM B928/B928M addresses selected high-magnesium aluminum alloy products for marine service and similar environments. Depending on the specified alloy, temper, and product form, it adds marine corrosion resistance requirements beyond general dimensional and mechanical acceptance.
For 5083-H116 or 5083-H321 used in seawater-exposed hull construction, specify ASTM B928/B928M where required by the project.
Corrosion test requirements and records should be confirmed before production, including applicable ASTM G66 and ASTM G67 testing.
Marine classification approval is a separate project requirement. Do not assume that a mill certificate alone establishes approval by ABS, DNV, BV, LR, or another classification society.
5083 Aluminum Alloy Applications
Marine & Shipbuilding
5083 aluminum is widely used in hull plating, bulkheads, decks, superstructures, shipbuilding components, and selected marine equipment.
For seawater-contact applications, H116 or H321 is typically evaluated together with relevant corrosion testing and class requirements.
Offshore & Coastal Engineering
5083 is suitable for fabricated structures exposed to salt-laden atmospheres, including coastal industrial equipment, offshore access structures, and corrosion-resistant structural components.
Final material selection must consider loading, temperature, joining methods, and environmental exposure.
Transportation & Tanker Manufacturing
5083 sheet and plate are commonly used for truck bodies, trailers, tanker components, and transportation structures requiring good weldability and lower structural weight.
Cryogenic Tanks & LNG Equipment
5083 aluminum maintains favorable toughness at low temperatures and is used in selected cryogenic storage and transportation systems.
For pressure-containing or LNG applications, the relevant vessel design code, material approval, welding procedure, and inspection requirements take precedence over general product specifications.
Industrial Equipment & Welded Structures
Other applications include industrial tanks, welded frames, heavy-duty machinery components, fabrication blanks, and corrosion-resistant structural assemblies.
Welding, Forming & Machining Recommendations
Welding
5083 has excellent weldability and is commonly welded using GTAW/TIG or GMAW/MIG processes.
Depending on the design and applicable welding code, filler alloys such as ER5183 and ER5356 may be considered.
For strength-critical marine welds, ER5183 is often evaluated because its weld-metal properties can be suitable for 5083 structural applications. The final filler selection must follow an approved welding procedure.
Welding Consideration: Welding can reduce strength in strain-hardened material within the heat-affected zone. Design calculations must use allowable welded properties rather than assuming that H116 or H321 parent-metal strength is fully retained after welding.
Forming
O and H111 conditions may be preferred when forming and bending are priorities.
The permitted bend radius depends on thickness, temper, rolling direction, and the applicable specification.
Machining
5083 can be saw-cut, milled, drilled, and machined into industrial components. Appropriate tooling, chip control, lubrication, and workholding improve machining consistency.
Where tight flatness tolerances are required after machining, buyers should communicate the intended machining allowance and dimensional requirements before ordering.
Service Temperature Considerations
5083 is not intended as a universal high-temperature structural alloy.
Prolonged exposure to elevated temperatures may increase the risk of sensitization and corrosion-related degradation in high-magnesium aluminum alloys. Elevated-temperature marine applications require a specific engineering review.
5083 vs. Other Aluminum Alloys – Material Selection
| Alloy | Relative Characteristics | Typical Selection |
|---|---|---|
| 5052 | Lower strength, good corrosion resistance and formability | Light fabrication and sheet metal |
| 5083 | High strength, excellent weldability and marine resistance | Shipbuilding and welded structures |
| 5086 | Good marine resistance and weldability, generally lower strength than 5083 | Marine panels and welded fabrication |
| 5754 | Good formability, moderate strength, good corrosion resistance | Transportation and general fabrication |
| 6061 | Heat-treatable, versatile for machining and extrusions | Frames, machined parts, structural components |
Selection guidance: Choose 5083 when the project prioritizes welded structural strength together with marine corrosion resistance. Choose the final alloy only after considering strength, fabrication, environment, dimensions, and governing material standards.
Custom Processing & OEM Supply Services
Xi'an Dongmeng Group Co., Ltd. supports industrial buyers with material supply and value-added processing services selected according to project requirements.
Available Processing Options
Cut-to-length aluminum sheet and plate
Precision sawing and size preparation
CNC profiling, subject to drawing review
Edge preparation and deburring
Surface protection and handling requirements
Customized export bundles and project-specific packing
Dimensional and material inspection coordination
Processing feasibility and achievable tolerances are confirmed at quotation stage.
What to Provide for Custom Orders
For machined or cut aluminum components, please send technical drawings showing dimensions, tolerances, thickness, quantity, edge requirements, and the required temper.
For welding projects, include the application environment and material specification.
Material Inspection & Quality Documentation
Consistent documentation and traceability are essential for industrial aluminum procurement.
Inspection and documentation requirements can be agreed before production.
| Inspection Item | Verification |
|---|---|
| Chemical Composition | Mill analysis or agreed laboratory results |
| Mechanical Properties | Tensile, yield, and elongation data as applicable |
| Dimensional Accuracy | Thickness, width, length, and agreed tolerance |
| Surface Condition | Visual inspection against agreed acceptance criteria |
| Material Identification | Alloy, temper, batch or heat identification |
| Marine Corrosion Testing | Applicable test evidence for the specified product |
| Documentation | MTC / EN 10204 3.1 when agreed |
| Third-Party Inspection | Independent inspection can be arranged on request |
For marine and other critical applications, buyers should specify required corrosion testing, classification approval, inspection witnessing, and document content before order confirmation.
Export Packaging & International Supply
5083 aluminum sheets and plates can be packed according to size, weight, surface sensitivity, and transportation method.
Typical options include moisture-resistant wrapping, protective interleaving, wooden pallets, reinforced bundles, and edge protection.
For heavy or large-format plates, lifting arrangements and secure packing methods are selected according to shipment requirements.
Export quotations may be prepared on applicable Incoterms, such as FOB, CFR, or CIF, depending on the destination and commercial agreement.
Why Choose Dongmeng Group for 5083 Aluminum Supply?
Material-Oriented Supply Support
We help buyers identify appropriate alloy grades, temper conditions, product specifications, and relevant inspection requirements.
Custom Dimensions & Processing
Instead of limiting procurement to standard plate sizes, we assist with cutting and customized supply to support downstream manufacturing.
Quality Documentation Coordination
Material traceability, mill test documentation, and third-party inspection requirements can be discussed and confirmed before purchase.
Multi-Material Procurement Capability
In addition to aluminum products, Dongmeng Group supplies other industrial metal materials for customers managing multiple material categories and engineering projects.
Export-Oriented Service
Our team supports international quotation, export documentation, protective packaging, and shipment coordination.
Frequently Asked Questions About 5083 Aluminum
Q1. What is aluminum alloy 5083 mainly used for?
5083 is widely used for marine structures, shipbuilding, welded tanks, transportation equipment, offshore fabrication, and selected cryogenic applications.
Q2. What is the difference between 5083-H116 and 5083-H321?
Both are marine-oriented strain-hardened conditions. H116 is specifically controlled for marine corrosion performance, while H321 includes stabilization. They have comparable strength requirements in many standard thickness ranges, but substitution must follow project specifications.
Q3. Is 5083 aluminum stronger than 5052?
5083 generally provides higher strength than 5052 in commonly compared product conditions, making it attractive for demanding welded structural applications. Actual strength depends on temper and thickness.
Q4. Is 5083 aluminum heat treatable?
No. It is a non-heat-treatable Al-Mg alloy. T6 and T651 are not applicable tempers for 5083.
Q5. Can 5083 aluminum be welded?
Yes. It is readily welded using suitable TIG and MIG procedures. Welded strength must be evaluated separately because heat-affected regions of strain-hardened material may soften.
Q6. Is 5083 suitable for continuous seawater exposure?
5083 can be suitable for seawater service when supplied in an appropriate temper and under the required marine material specification. Corrosion qualification and design requirements must be established for the intended application.
Q7. What is the difference between ASTM B209 and ASTM B928?
ASTM B209 is a general sheet and plate specification. ASTM B928 covers selected high-magnesium products intended for marine environments and includes applicable additional corrosion resistance requirements.
Q8. Can you supply 5083 aluminum plate in custom sizes?
Custom cutting and sizing services are available subject to stock, mill production capability, temper, and thickness. Provide the exact dimensions and quantities for confirmation.
Q9. Can 5083 aluminum be used for LNG tanks?
5083 is a recognized material option for selected cryogenic applications. Final suitability depends on the governing pressure vessel or tank design code, operating conditions, welding requirements, and material qualification.
Q10. Are mill test certificates available?
Mill test certificates and EN 10204 3.1 inspection documentation can be specified as part of the purchase requirements. Confirm the required inspection certificate before ordering.
Q11. Is 5083-H116 always better than H321?
No. Both can meet demanding marine requirements. The selection should be based on the project standard, corrosion testing, thickness, formability, and classification requirements rather than a general assumption that one temper is universally superior.
Q12. How do I request a quotation for 5083 aluminum?
Send the required alloy, temper, product form, thickness, width, length, quantity, applicable standard, documentation requirements, and delivery destination. Technical drawings are recommended for custom components.
Request a Quote – 5083 Aluminum Alloy Supplier
Looking for dependable 5083 aluminum plate, sheet, or custom-cut blanks for your next industrial project?
Xi'an Dongmeng Group Co., Ltd. supports international B2B procurement with technical specification review, custom processing coordination, material documentation, and export services.
For a more accurate quotation, please provide:
Alloy and temper: 5083-H111 / H116 / H321 / other
Material form and dimensions
Required material standard
Order quantity
Application and inspection requirements
Delivery country, destination port, and target date
Contact Dongmeng Group today to request a technical quotation for your 5083 aluminum requirements.
Office Information
Company: Xi'an Dongmeng Group Co., Ltd.
Phone: +86 15769214734
Email: office@dongmjd.com
WhatsApp: +86 15769214734
Office Address: Room 4107, Runfeng Building, Sanqiao New Street, Weiyang District, Xi'an City, Shaanxi Province, China.
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