6082 Aluminum Flat Bar
As a professional aluminum manufacturer, we offer 6082 aluminum alloy flat bars that comply with ASTM B221/B211 standards. We support sea freight and offer bulk purchase discounts.
6082 Aluminum Flat Bar is a medium-strength, heat-treatable 6000 series wrought alloy. It has the highest strength among the 6000 series while maintaining excellent corrosion resistance, weldability, and machinability.
In the T6/T651 temper condition, the yield strength of 6082 Aluminum Flat Bar ranges from 255–310 MPa, the ultimate tensile strength ranges from 290–340 MPa, the elongation is 9–11%, and the density is 2.70 g/cm³. They are produced through extrusion or rolling, commonly supplied in sizes up to 150 × 12 mm or larger, and comply with standards such as ASTM B221 and BS EN 485-2.
Common applications of 6082 aluminum include structural components in bridges, cranes, trusses, marine engineering, building frames, and transportation equipment, where strength, lightweight characteristics, and corrosion resistance are critical.
6082 is known for its balanced strength and corrosion resistance. The flat bar form of this alloy is mainly manufactured through extrusion or rolling processes. With a rectangular cross-section, it is ideal for high-stress structural applications.
6082 Aluminum Flat Bar Specifications
| Item | Description |
| Common Tempers | T6: Highest strength, widely used in structural applications. |
| T4/T5: Medium tempers suitable for specific processing requirements. | |
| Typical Dimensions | Thickness: 3 mm to 50 mm |
| Width: 10 mm to 200 mm | |
| Length: Standard lengths are 3 meters or 6 meters; custom lengths available. | |
| Surface Finishes | Mill finish: As-extruded original surface. |
| Anodized: Enhances corrosion resistance and offers aesthetic options. | |
| Powder-coated: Highly durable with a variety of color options. | |
| Standards & Certifications | EN 573-3: European standard for aluminum alloy chemical composition. |
| ASTM B221: U.S. standard for extruded aluminum bars. |
6082 Aluminum Flat Bar Chemical Composition
Key alloying elements and their typical percentage ranges for 6082 (EN AW‑6082) are:
- Silicon (Si): 0.7–1.3 %
- Magnesium (Mg): 0.6–1.2 %
- Manganese (Mn): 0.4–1.0 %
- Iron (Fe): ≤ 0.5 %
- Chromium (Cr): ≤ 0.25 %
- Copper (Cu): ≤ 0.1 %
- Zinc (Zn): ≤ 0.2 %
- Titanium (Ti): ≤ 0.1 %
- Balance: Aluminum (Al)
6082 Aluminum Flat Bar Physical and Mechanical Properties
- Density: 2.70 g/cm³
- Modulus of Elasticity: ≈70 GPa
- Thermal Conductivity: 167–216 W/m·K
- Yield Strength: 255–310 MPa (T6/T651)
- Ultimate Tensile Strength: 290–340 MPa (T6/T651)
- Elongation at Break: 9–11% (A50 mm)
- Hardness: 91 HB (Brinell) / 95 HV (Vickers)
6082 Aluminum Flat Bar Material Characteristics
- Mechanical Strength: High strength, especially in T6 temper (solution heat treated and artificially aged).
- Corrosion Resistance: Excellent, particularly suitable for marine environments due to the synergistic effect of magnesium and silicon.
- Weldability: Good with TIG/MIG welding processes; 4043/5356 filler wire is recommended.
- Machinability: Moderate; carbide tools are recommended to prevent wear.
- Formability: Suitable for bending/forming, though complex shapes may require annealing.
6082 Aluminum Flat Bar Heat Treatment and Tempers
6082 flat bars are typically supplied in the following tempers:
- T6: Solution heat-treated and artificially aged to achieve peak strength.
- T651: T6 temper with stress relief by stretching to minimize post-machining deformation.
These tempering processes optimize the strength and dimensional stability for high-stress structural components.
6082 Aluminum Flat Bar Corrosion Resistance and Surface Finishes
6082 offers outstanding resistance to general and marine corrosion, superior to many other 6000 series alloys. It is well-suited for anodizing, which enhances surface hardness and aesthetics, and responds well to chromate conversion coatings or powder coatings for use in harsh environments.
| Item | Description |
| Fabrication | Machinability: Rated as good to excellent; flat bar is easy to machine with minimal tool wear, making it ideal for precision components. |
| Weldability: Easily welded using MIG, TIG, or resistance welding methods; post-weld aging treatment is recommended to restore strength in the heat-affected zone. | |
| Forming | Flat bars can be bent, stamped, or roll-formed using standard equipment; larger cross-section sizes may require preheating to avoid cracking. |
6082 Aluminum Flat Bar Applications
Marine Engineering: Due to its excellent seawater resistance, it can be used in ship superstructures, deck fittings, and offshore platforms.
Applications of 6082 Aluminum Flat Bar in the Marine Sector
| Application Category | Specific Applications | Advantageous Features |
| Structural Components | Hull frames, bulkhead stiffeners, superstructure supports | High strength-to-weight ratio, good weldability, and structural stability |
| Deck Supports and Railings | Deck frames, handrails, guardrails, ladder stringers | Excellent corrosion resistance, superior structural load capacity, suitable for commercial and recreational vessels |
| Marine Hardware | Mooring bollards, cleats, brackets, base plates | Excellent machinability, high surface finish after processing, enhances appearance and component lifespan |
| Special Applications | Gangway supports, mounting rails for marine electronics, custom brackets | Adapted to marine environments, excellent weather resistance and long lifespan, suitable for complex and variable working conditions |
6082 Aluminum Flat Bar is applied in which fields?
- Construction: Aesthetic and load-bearing window and door frames, cladding supports, and curtain walls.
- Transportation: Chassis components, panel supports, and trailer frames in the automotive and railway industries.
- Machinery and Tools: Machine bases, jigs, and fixtures requiring rigidity and dimensional precision.
- Structural Engineering: Bridge trusses, roof structures, crane booms, and high-stress truss components.
6082 Aluminum Flat Bar Standards and Specifications
6082 Aluminum Flat Bar typically complies with the following standards:
- ASTM B221: Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes.
- BS EN 485-2:2008: European Standard for Aluminum Flat-Rolled Products – Mechanical Properties.
6082 Aluminum Flat Bar Comparison with Similar Alloys
- 6061 Aluminum: Lower strength than 6082-T6; however, better machinability.
- 6082 Advantages: Higher load-bearing capacity, better stress corrosion resistance.
6082 Aluminum Flat Bar Fabrication Considerations
- Welding: For thicknesses over 6 mm, preheat to 250°C.
- Machining: Use sharp tools and coolant to prevent chip welding.
- Forming: For extensive cold working, anneal at 415°C for 2–3 hours.
6082 aluminum flat bar is highly suitable for high-stress applications requiring durability, weldability, and corrosion resistance, making it a versatile choice across industries.
Tags: Marine Aluminum 6082
