5083 Aluminum Bar

5083 aluminum bar is a non-heat-treatable alloy, part of the 5000 series (Al-Mg alloy). It is renowned for its exceptional strength, weldability, and corrosion resistance, especially in marine and industrial environments.

With excellent corrosion resistance and weldability, 5083 aluminum bar is the preferred material for harsh environments such as marine engineering and chemical industries. It is suitable for structural components requiring both strength and durability. Selection should consider strength, workability, and cost based on specific applications.

5083 is widely used in marine, cryogenic, and structural applications, mainly provided in plate and bar forms. It comes in various "H" cold-worked tempers (H111, H112, H116, H321), each optimized for specific strength and formability requirements.

5083 aluminum bar is a high-quality Al-Mg alloy, praised for having the highest strength among non-heat-treatable alloys, excellent weldability, and unmatched corrosion resistance in marine and industrial environments. Available in various "H" temper cold-worked states, it is extensively applied in shipbuilding, pressure vessels, transportation, and structural applications. All products comply with strict ASTM/EN/UNS standards.

5083 aluminum is a wrought alloy characterized by high magnesium content (4.0–4.9% Mg) and trace additions of manganese/chromium. It offers the highest strength among all non-heat-treatable aluminum alloys, while maintaining superior weldability and excellent resistance to seawater and industrial chemicals.

5083 gains its strength through cold working rather than heat treatment, making it the strongest alloy in its series. Its high strength, weldability, and corrosion resistance make it the ideal choice for extreme environments, especially marine applications.

Haomei Aluminum specializes in the production of 5083 aluminum bars, using Al-Mg alloy formulations with excellent corrosion resistance, weldability, and medium strength. Widely used in shipbuilding, automotive, aerospace, and rail transportation sectors. Available in multiple tempers such as H112 and O, supporting custom machining with outer diameters from Φ15mm to 450mm. Ample stock and fast delivery. Capable of meeting complex part machining requirements. Direct supply from manufacturer, competitive pricing, contact us now!

5083 Aluminum Bar Available Shapes and Dimensions

Product Forms and Standards

Form: Typically available in extruded or forged round and square bars, with various diameter ranges.

5083 Aluminum Bar Standards and Certifications

• ASTM: B209 (plate), B221 (bar)
• Military Standards: AMS 4057, MIL-A-45225
• Marine Certifications: ABS, DNV, LR

5083 Aluminum Bar Tempers and Heat Treatment

5083 is not heat-treatable; strength is achieved via "H" cold-work tempers:

• H111: Slightly cold-worked for improved formability.
• H112: As-rolled, minimal cold work .
• H116: Stabilized for marine use—improved stress-corrosion resistance.
• H321: Strain-hardened and stabilized by low-temperature anneal .

No solution or precipitation heat treatments apply.

5083 Aluminum Bar Stock

5083 Aluminum Flat Bar Stock

5083 Aluminum Square Bar Stock

5083 Aluminum Round Bar Stock

Core Characteristics of 5083 Aluminum Bar

• Corrosion Resistance: 5083 performs exceptionally well in marine and chloride-containing environments, with excellent resistance to stress corrosion cracking.
• Medium to High Strength: Achieved through solid solution strengthening and cold working, offering higher strength than pure aluminum.
• Weldability: Easy to weld with high weld seam strength, suitable for structural parts requiring welding.
• Workability: Can be cold formed; however, its machinability is slightly inferior to heat-treatable alloys (such as 6061).
• Non-Heat-Treatable: Strength cannot be significantly improved through heat treatment; relies on cold working for strengthening.

Composition of 5083 Aluminum Bar

• Magnesium (4.0–4.9%): Enhances strength and corrosion resistance
• Manganese (0.4–1.0%): Improves work hardening and structural stability
• Trace elements include Chromium (0.05–0.25%), Silicon (≤0.4%), and Iron (≤0.4%)

Mechanical Properties of 5083 Aluminum Bar

Tensile Strength:

H111 (extruded): 275–350 MPa

H116/H321 (plate): 317 MPa (46, 000 psi)

Yield Strength: 125–228 MPa, depending on temper

Elongation: 12–16%

Hardness: 70–96 HB (Brinell Hardness)

Physical Properties of 5083 Aluminum Bar

• Density: 2.66–2.70 g/cm³
• Melting Point: 570–638°C
• Thermal Conductivity: 117–121 W/m·K

Corrosion and High-Temperature Resistance of 5083 Aluminum Bar

• Excellent resistance to seawater, industrial chemicals, and atmospheric corrosion
• Suitable for low-temperature applications down to -195°C (strength increases at low temperatures)
• Avoid prolonged use above 65°C to prevent strength degradation

5083 alloy can form an Al₂O₃ protective layer, offering outstanding corrosion resistance in seawater, industrial chemicals, and water environments with pH values between 4 and 9. It is more resistant to stress corrosion cracking than other 5xxx alloys, especially in H116/H321 temper conditions.

Marine Applications of 5083 Aluminum Bar

• Marine: Shipbuilding, offshore platforms, and hulls.
• Ship Manufacturing: Hulls, decks, bulkheads, and other seawater-contact components in yachts, cruise ships, and offshore drilling platforms, including superstructures, decks, and accessories.
• Ship Structures and Marine Equipment Components (e.g., pipelines, hull sheet metal), adapted to seawater corrosion environments.

Other Industries Where 5083 Aluminum Bar is Used

Key Performance Application Scenarios

Corrosion-Resistant Environments

Chemical containers, marine equipment, refrigeration industrial equipment, and other rust-prevention required applications

Welded Structural Components

Aircraft fuel tanks, armored protection structures, subway carriages, and other components requiring excellent weldability

Medium Strength and Cold Working Applications

Electrical housings, deep-drawn parts (such as fuel tanks), hydraulic system pipelines, and other structural parts requiring good formability

Its high strength-to-weight ratio and excellent corrosion resistance in harsh environments make it an indispensable material in applications where lightweight and durability are critical.

5083 Aluminum Bar Manufacturing and Welding

• Weldability: Excellent when using recommended fillers such as 5183, 5356, or 5556
• Machinability: Due to high ductility, machinability is limited; requires specialized tools
• Cold Workability: Responds well to strain hardening (e.g., H32 temper)

Advantages of 5083 Aluminum Bar Over Other Alloys

• Compared to 5052 Aluminum: 5083 offers higher strength, better suited for high-load environments.
• Compared to 6061 Aluminum: 5083 provides superior corrosion resistance, while 6061 can be heat-treated for better mechanical properties.

Limitations of 5083 Aluminum Bar

• Not heat-treatable; relies on cold working for strengthening
• Limited machinability; careful tool selection is necessary

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