6082-T6 Aluminum Round Bar

With manganese added above the 6061 level, 6082 carries higher yield while keeping good weldability and corrosion resistance, which is why it is widely used for load-bearing structural parts, transport bodies, marine frames, and CNC-machined components. GNEE stocks and cuts it in diameters typically from 6 mm to 500 mm, in lengths of 1–6 m or cut-to-length, as mill finish or with anodizing / coating on request.

 

Chemical Composition of 6082 Aluminum Round Bar

The composition below applies to AA 6082 / EN AW-6082 (AlSi1MgMn) and is controlled to ASTM B221, EN 573-3, and GB/T 3190. Values are in weight percent.

Element	Min %	Max %	Role
Silicon (Si)	0.70	1.30	Forms Mg₂Si with Mg; drives precipitation hardening in T6.
Iron (Fe)	-	0.50	Minor constituent; controlled to protect surface and anodizing.
Copper (Cu)	-	0.10	Kept low to preserve weldability and corrosion resistance.
Manganese (Mn)	0.40	1.00	Grain refiner; lifts strength above 6061.
Magnesium (Mg)	0.60	1.20	Primary strengthening element via Mg₂Si.
Chromium (Cr)	-	0.25	Controls recrystallization and grain structure.
Zinc (Zn)	-	0.20	Limited to avoid stress-corrosion sensitivity.
Titanium (Ti)	-	0.10	Grain refiner.
Others each / total	-	0.05 / 0.15	Residual control per AA 6082.
Aluminum (Al)	Remainder	Remainder	Base metal.

Equivalent designations: EN AW-6082, UNS A96082, WNr 3.2315, GB/T 6082, ISO AlSi1MgMn, JIS A6082.

 

Mechanical Properties of 6082-T6 Aluminum Round Bar

Per EN 755-2, the minimum mechanical properties of 6082-T6 round bar depend on diameter. The table uses diameter as the controlling dimension for round bar.

Diameter (mm)	Tensile strength (UTS) min	Yield strength (Rp0.2) min	Elongation min
≤ 20	295 MPa	250 MPa	8%
> 20 – 150	310 MPa	260 MPa	8%
> 150 – 200	280 MPa	240 MPa	6%

ASTM B221 material in T6 is commonly supplied at tensile strength ≥ 310 MPa and yield ≥ 276 MPa. Physical properties: density 2.70 g/cm³, melting range ≈ 555 °C, modulus of elasticity ≈ 70 GPa, thermal conductivity ≈ 180 W/m·K, hardness ≈ 95 HB. These are reference values; confirm exact figures against the mill certificate for the delivered lot.

 

 

Characteristics of 6082 Aluminum Round Bar

Strength: Medium-to-high among 6xxx alloys; T6 gives the highest strength of the common structural tempers.

Corrosion resistance: Good in atmospheric and many industrial/marine environments. For long-term seawater exposure, specify the right temper and consider coating or anodizing.

Weldability: Good with MIG/TIG. Use 5356 or 5183 filler for 5xxx/6xxx joints; post-weld heat treatment can recover some strength lost in the heat-affected zone.

Machinability: Good in T6 - produces consistent chips and a clean finish in CNC turning and milling.

Surface treatment: Anodizes and powder-coats well; bright-drawn (h9/h11) bar gives a smooth starting surface.

 

Specifications and Tolerances of 6082 Aluminum Round Bar

Available supply: diameter typically 6–500 mm (common stock 6–300 mm), length 1–6 m or cut-to-length, tempers T6 and stress-relieved T6511 as standard, with T4, T5, and O available for forming or post-form heat treatment. Surface: mill finish, anodized, or coated on request.

Diameter tolerance - cold-drawn (EN 754-3, ISO h9 / h11)

Diameter (mm)	h9 (0 / −)	h11 (0 / −)
up to 3	0 / −0.025	0 / −0.060
over 3 to 6	0 / −0.030	0 / −0.075
over 6 to 10	0 / −0.036	0 / −0.090
over 10 to 18	0 / −0.043	0 / −0.110
over 18 to 30	0 / −0.052	0 / −0.130
over 30 to 50	0 / −0.062	0 / −0.160
over 50 to 80	0 / −0.074	0 / −0.190
over 80 to 100	0 / −0.087	0 / −0.220

 

Diameter tolerance - extruded (EN 755-3, alloy group: 6082)

Diameter (mm)	Tolerance ±
8 – 18	0.22
18 – 25	0.25
25 – 40	0.30
40 – 50	0.35
50 – 65	0.40
65 – 80	0.45
80 – 100	0.55
100 – 120	0.65
120 – 150	0.80
150 – 180	1.00
180 – 220	1.15
220 – 270	1.30
270 – 320	1.60

 

Straightness and length

Straightness: extruded typically ≤ 2.0 mm per metre; cold-drawn (precision) typically ≤ 1.0 mm per metre. Tighter straightness available on request.

Length: standard 3 000 – 6 000 mm; cut-to-length available. Length tolerance is typically ±5 mm, or as agreed per order.

Tolerance values above are standard reference limits (EN 754-3 / EN 755-3). GNEE stocks common h9/h11 cold-drawn and standard extruded classes; confirm the exact tolerance class and any special straightness requirement when ordering.

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Applications of 6082 Aluminum Round Bar

Structural and framework: bridges, walkways, supports, crane booms, gantries.

Transport: rail bodies, trailer and trailer-chassis parts, bus and truck structures.

Marine and offshore: frames, handrails, fittings, and lightly loaded structural members.

Machined parts: brackets, spacers, bushings, shafts, fixtures, and jigs.

General engineering: machine guards, automation components, and custom fabrications.

Inspection and Testing of 6082 Aluminum Round Bar

Check	Method / standard
Chemical composition	OES spectrometer; verified against ASTM B221 / EN 573-3.
Mechanical properties	Tensile, yield, elongation per ASTM E8 / EN ISO 6892; temper confirmed.
Dimensions & form	Diameter, ovality, straightness, length per EN 754-3 / EN 755-3.
Surface	Visual check for scratches, oxide, and coating defects.
Certificate	Mill certificate EN 10204 3.1 with each lot.

On request: EN 10204 3.2 certificate, third-party inspection by SGS / BV / TÜV, and ultrasonic or other NDT for thick bar. GNEE verifies grade, temper, and dimensions before the bar leaves the plant.

 

 

Packaging of 6082 Aluminum Round Bar

Bundle with PE wrapping and interleaving paper to protect against moisture and surface marks.

Wooden crate or reinforced wooden/pallet base with steel strapping; end caps or V-boards to prevent rolling and edge damage.

For long bars, supports placed to avoid sagging; labeling shows alloy, temper, diameter, length, lot number, standard, and gross/net weight.

Packing list included for smooth customs clearance.

 

 

About GNEE

GNEE has supplied aluminum bar, rod, and profile since 2008 and now ships to more than 100 countries. We keep common 6082 diameters and tempers in stock so standard orders can be cut and documented quickly, while less common sizes are produced to order. Small and large orders are both accepted, with lead times generally 15–30 days and mill certificates (EN 10204 3.1) supplied as standard; 3.2 certificates and third-party inspection (SGS / BV / TÜV) can be arranged. Our technical team helps match alloy, temper, and tolerance class to the actual service condition rather than quoting a generic spec.

 

 

Processing Services for 6082 Aluminum Round Bar

Cutting: saw cutting to length, plus laser or waterjet for precise or shaped cuts.

CNC machining: turning, milling, drilling, and threading to drawing.

Centerless grinding / peeling: bring bar to tight diameter tolerance (h9/h8) and improve straightness and surface.

Drilling & milling: holes, flats, keyways, and contours per specification.

Surface treatment: anodizing, powder coating, and brushing on request.

Welding & fabrication: TIG/MIG using 5356 or 5183 filler, consistent with the welding notes above.

Processing is quoted together with the base bar based on drawing and quantity; feasibility, lead time, and price are confirmed before production.

 

Ordering 6082 Aluminum Round Bar

Tell us the alloy and temper (6082-T6 or T6511), diameter and length, tolerance class (e.g. h9/h11 drawn or standard extruded), quantity, and surface requirement. MOQ is flexible and small trial orders are welcome. Typical lead time is 15–30 days; pricing is by inquiry based on size, tolerance, and quantity. We work on FOB / CIF terms with T/T or L/C payment, supply EN 10204 3.1 mill certificates, and follow ASTM B221 / EN 755 / EN 754 / GB/T 3191. Send your drawing or specification and we will respond with a quoted offer.

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FAQ

Q: What is the difference between 6082-T6 and T6511?
A: T6 is the standard solution-heat-treated and artificially aged temper. T6511 is stress-relieved by stretching after aging, which reduces residual stress and distortion in machined parts.

Q: Can 6082-T6 round bar be welded?
A: Yes. MIG and TIG welding are both suitable; 5356 or 5183 filler is commonly used for 6xxx joints.

Q: What diameter and length can I get?
A: Stock covers roughly 6–300 mm diameter with 1–6 m lengths; larger diameters and cut-to-length are available on request.

Q: Is a mill certificate provided?
A: Yes, EN 10204 3.1 with every lot; 3.2 and third-party inspection can be arranged.

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