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Product Overview
Aluminum Tube 6063 is an aluminum-magnesium-silicon (Al-Mg-Si) alloy tube renowned for its excellent extrudability, outstanding surface finish quality, and superior anodizing response. It is the first choice for architectural, decorative, and consumer applications where appearance and formability matter most. Our 6063 aluminum tubes are available in T4, T5 and T6 tempers, produced per ASTM B221, EN 755, GB/T 5237 and JIS H4100 standards, with custom outer diameters, wall thicknesses, lengths, and anodized or powder-coated finishes.
Chemical Composition (%), ASTM B221 / GB/T 3190
Al (Aluminum): 97.5 – 99.35 (balance)
Mg (Magnesium): 0.45 – 0.9
Si (Silicon): 0.20 – 0.6
Fe (Iron): 0.35 max
Cu (Copper): 0.10 max
Mn (Manganese): 0.10 max
Zn (Zinc): 0.10 max
Cr (Chromium): 0.10 max
Ti (Titanium): 0.10 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 130-180 MPa, Yield Strength 70-120 MPa, Elongation 14-18%
Temper T5 (Cooled & Artificially Aged): Tensile Strength 160-205 MPa, Yield Strength 110-175 MPa, Elongation 8-12%
Temper T6 (Solution Treated & Artificially Aged): Tensile Strength 205-245 MPa, Yield Strength 170-215 MPa, Elongation 8-12%
Hardness: 73 HB (T6)
Shear Strength: 140 MPa (T6)
Fatigue Strength: 70 MPa (T6, at 5×10⁸ cycles)
Physical Properties
Density: 2.70 g/cm³ (0.0975 lb/in³)
Melting Point: 615-655°C (1140-1210°F)
Thermal Conductivity: 201 W/(m·K) at 25°C (T5)
Electrical Conductivity: 50% IACS (T5)
Electrical Resistivity: 3.4 × 10⁻⁸ Ω·m
Thermal Expansion Coefficient: 23.4 × 10⁻⁶/K (20-100°C)
Modulus of Elasticity: 68.3 GPa (9,900 ksi)
Poisson Ratio: 0.33
Specifications
Standards: ASTM B221 (extruded), EN 755-2 / 755-5, GB/T 5237 (architectural), JIS H4100, ISO 6362
Outer Diameter: 10 mm – 400 mm (0.4″ – 15.7″)
Wall Thickness: 0.8 mm – 30 mm (0.03″ – 1.18″)
Length: 1 m – 12 m (custom cutting available)
Temper: T4, T5, T6
Type: Extruded round, square, rectangular, oval, and custom profile tubes
Surface Finish: Mill finish, Bright, Anodized (silver, black, champagne, bronze, gold), Powder coated (any RAL color), Wood grain transfer, Brushed, Polished
Tolerance: OD: ±0.3mm to ±1.0mm, Wall: ±8-10%, Length: ±5mm
Special: Anodizing thickness 8-25 microns per GB/T 5237.2; Powder coating 60-120 microns
Key Features & Advantages
- Excellent extrudability – complex cross-sections and thin walls achievable
- Superior surface finish quality – smooth, uniform, and defect-free surfaces
- Outstanding anodizing response – consistent, bright, and durable anodic films
- Good corrosion resistance – ideal for exterior architectural applications
- Medium strength with adequate structural performance for building applications
- Excellent formability – easy to bend, cut, and fabricate
- Lightweight – reduces building dead load and installation cost
- Excellent weldability – suitable for frames and assemblies
- Wide range of decorative finishes – anodized, powder coated, wood grain
- Recyclable and sustainable – 100% recyclable with low carbon footprint
Applications
- Architectural – window and door frames, curtain wall mullions, handrails, railings
- Construction – scaffolding, awnings, canopies, gates, fencing, staircases
- Furniture – table and chair frames, shelving, display stands, wardrobe rails
- Lighting – LED profile housings, light fixtures, channel tracks
- Solar energy – photovoltaic mounting frames, support structures, brackets
- Automotive – trim, roof racks, seat frames, luggage racks
- Electronics – heat sinks, equipment enclosures, chassis frames
- Machinery guards – safety guards, enclosures, covers
- Sports and fitness – exercise equipment frames, goal posts, hurdles
- Decoration – ceiling grids, partition frames, picture frames, showcases
Quality Control & Testing
Every batch of our 6063 aluminum tubes undergoes strict quality control:
Chemical Analysis: Spectrometer verification of Mg and Si content
Mechanical Testing: Tensile test, yield strength test, elongation test, hardness test (per temper)
Surface Quality Inspection: Visual and dye-penetrant inspection for die lines, scratches, blisters, and stains
Anodizing Quality Test: Anodic film thickness, seal quality, and color consistency tests (per GB/T 5237.2)
Dimensional Inspection: OD, wall thickness, straightness, twist, and length checks
Documentation: Mill Test Certificate (MTC), material traceability, conformity certificate
Packaging & Shipping
Packaging: Standard export packaging – tubes bundled with plastic caps on both ends, protective paper interleaving between tubes, wrapped in waterproof kraft paper and plastic film, wooden pallets or crates, steel strapping; surface protection film for anodized and coated tubes
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 and finishes – 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 6063 aluminum tubes to curtain wall contractors, furniture manufacturers, and LED lighting companies in more than 50 countries. Our factory is equipped with modern extrusion lines, anodizing lines, and powder coating lines, providing one-stop solutions from raw tube to finished surface treatment. We maintain large inventory of standard sizes, tempers, and finishes 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!
