QIDAMT
Product Overview
Aluminum Tube 6061 is a precipitation-hardened aluminum-magnesium-silicon (Al-Mg-Si) alloy tube, one of the most versatile and widely used aluminum alloys for structural applications. It combines medium-to-high strength, excellent weldability, good corrosion resistance, and superior machinability. Our 6061 aluminum tubes are available as seamless tubes and extruded tubes, in T4, T5, T6 and T6511 tempers, produced per ASTM B210, ASTM B221, GB/T 4437, EN 755 and JIS H4080 standards, with custom outer diameters, wall thicknesses, and lengths.
Chemical Composition (%), ASTM B221 / GB/T 3190
Al (Aluminum): 95.8 – 98.6 (balance)
Mg (Magnesium): 0.8 – 1.2
Si (Silicon): 0.4 – 0.8
Cu (Copper): 0.15 – 0.40
Cr (Chromium): 0.04 – 0.35
Fe (Iron): 0.70 max
Zn (Zinc): 0.25 max
Mn (Manganese): 0.15 max
Ti (Titanium): 0.15 max
Others Each: 0.05 max, Others Total: 0.15 max
Mechanical Properties (Typical Values, Tube)
Temper T4 (Solution Heat Treated & Naturally Aged): Tensile Strength 180-240 MPa, Yield Strength 110-170 MPa, Elongation 14-18%
Temper T5 (Cooled & Artificially Aged): Tensile Strength 230-270 MPa, Yield Strength 180-230 MPa, Elongation 8-12%
Temper T6 (Solution Treated & Artificially Aged): Tensile Strength 260-310 MPa, Yield Strength 240-290 MPa, Elongation 8-12%
Temper T6511 (T6 + Stress Relieved): Tensile Strength 260-310 MPa, Yield Strength 240-290 MPa, Elongation 8-12%
Hardness: 95 HB (T6)
Shear Strength: 200 MPa (T6)
Fatigue Strength: 95 MPa (T6, at 5×10⁸ cycles)
Physical Properties
Density: 2.70 g/cm³ (0.0975 lb/in³)
Melting Point: 582-652°C (1080-1205°F)
Thermal Conductivity: 167 W/(m·K) at 25°C (T6)
Electrical Conductivity: 43% IACS (T6)
Electrical Resistivity: 4.0 × 10⁻⁸ Ω·m
Thermal Expansion Coefficient: 23.6 × 10⁻⁶/K (20-100°C)
Modulus of Elasticity: 68.9 GPa (10,000 ksi)
Poisson Ratio: 0.33
Specifications
Standards: ASTM B210 (seamless), ASTM B221 (extruded), GB/T 4437.1, EN 755-2 / 755-5, JIS H4080, ASME SB210
Outer Diameter: 3 mm – 500 mm (0.12″ – 19.7″)
Wall Thickness: 0.4 mm – 40 mm (0.016″ – 1.57″)
Length: 1 m – 12 m (custom cutting available)
Temper: T4, T5, T6, T6511, T6 drawn
Type: Seamless tube, extruded tube, drawn tube
Surface Finish: Mill finish, Bright, Anodized (silver, black, bronze), Powder coated, Polished
Tolerance: OD: ±0.1mm (drawn) to ±1.0mm (extruded), Wall: ±5-10%, Length: ±5mm
Special Shapes: Round, square, rectangular, oval, hexagonal, and custom profiles
Key Features & Advantages
- Medium-to-high strength with excellent strength-to-weight ratio
- Excellent weldability – fully weldable with 4043 or 5356 filler wire
- Good corrosion resistance – suitable for outdoor and marine-adjacent environments
- Outstanding machinability – ideal for precision-machined components
- Good formability – can be bent, flared, flanged, and formed
- Heat treatable – T6 condition delivers maximum mechanical properties
- Excellent anodizing response – attractive and durable finishes
- Available seamless or extruded to suit different applications
- Consistent dimensional accuracy with tight tolerances
- Lightweight – reduces structural weight and handling costs
Applications
- Structural frameworks – railings, handrails, ladders, scaffolding, support frames
- Automotive – drive shafts, air brake lines, trim, frames, heat exchanger tubes
- Aerospace – hydraulic and pneumatic tubing, fuel lines, structural ducts
- Bicycle and motorcycle – frames, handlebars, racks, suspension parts
- Hydraulic and pneumatic systems – cylinders, piping, pressure lines
- Heat exchangers – condenser and evaporator tubing, cooling coils
- Construction – curtain wall mullions, canopies, gates, fencing
- Marine – masts, rigging, handrails, boat structures
- Machinery – conveyor rollers, guide tubes, shafts, machine guards
- Electronics – LED heat sink housings, antenna masts, enclosures frames
- General engineering – bus bars, brackets, spacers, standoffs, fittings
Quality Control & Testing
Every batch of our 6061 aluminum tubes undergoes strict quality control:
Chemical Analysis: Spectrometer verification of Mg, Si, Cu, Cr content
Mechanical Testing: Tensile test, yield strength test, elongation test, hardness test (per temper)
Heat Treatment Verification: Hardness and conductivity testing to verify T6 treatment
Dimensional Inspection: OD, wall thickness, roundness, straightness, and length checks
Surface Inspection: Visual inspection for scratches, die lines, pits, and stains
Pressure Testing: Hydrostatic or eddy current testing for seamless tubes (on request)
Documentation: Mill Test Certificate (MTC), material traceability, conformity certificate
Packaging & Shipping
Packaging: Standard export packaging – tubes bundled with plastic caps on both ends, wrapped in waterproof kraft paper and plastic film, wooden pallets or crates, steel strapping; protective paper interleaving for anodized surfaces
Marking: Alloy, temper, size, heat number, standard, manufacturer logo
Trade Terms: FOB, CIF, CFR, EXW, DDP
Payment: T/T (30% deposit, 70% before shipment), L/C at sight, Western Union, PayPal (sample orders)
Lead Time: Standard sizes in stock – 3-7 days; Custom sizes – 15-30 days
MOQ: 300 kg for standard sizes; custom orders negotiable
Loading Port: Qingdao, Shanghai, Tianjin, Ningbo, or as requested
Why Choose Us
With over 15 years of experience in aluminum manufacturing and export, we are a trusted supplier of 6061 aluminum tubes to automotive, construction, and machinery companies in more than 50 countries. Our factory is equipped with modern extrusion, drawing, heat treatment, and testing lines, ensuring consistent quality and dimensional accuracy. We maintain large inventory of standard sizes and tempers for immediate delivery, and our experienced team can provide technical consultation and customized solutions for your specific applications. Contact us today for a competitive quote!
