Aluminum Rectangular Tubing

Specifications

Item	Aluminum Rectangular Tubing
Alias	Aluminium Rectangular Hollow Section
Alloy Grade	6061-T6, 6063-T5, 5052-H32
Available Temper	T5, T6, T4, O
Execution Standards	ASTM B221, EN 755-9, GB/T 4437.1
Cross Section Size	Long side 10~200mm × Short side 5~150mm
Wall Thickness	0.8mm–15mm
Standard Length	1–12m
Surface Finishing	Mill finish extrusion, anodizing, powder coating, wood grain transfer, polishing, brushing
MOQ	10 MT
Export Packaging	Standard export moisture-proof protective packing

Explanation of rounded corners (R-angle) for aluminum rectangular tubes: The four corners of extruded aluminum rectangular tubes are naturally rounded, and the R-angle size is typically 1.0 to 2.0 times the wall thickness.

Surface Finishing for Our Aluminum Rectangular Tubing

1. Brushed aluminium tube: Features a uniform linear texture on the surface with strong metallic texture and fingerprint resistance for a premium look.
2. Polished aluminum tube: Mirror-like bright surface, widely applied in automotive trims, exhibition decorations, and high-end public spaces.
3. Powder-coated aluminum tubing: Colored via physical polymer coating. Coating thickness ranges from 60 to 120μm. Full RAL color options are provided with outstanding weather resistance.
4. Anodized aluminum tube: Anodized aluminum tube: chemically converted and colored, with an oxide ceramic film on the surface, 5~25μm thick, commonly dyed silver-white, bronze, gold, and black.
5. Wood grain aluminum tube: Simulates natural wood texture, waterproof, anti-corrosion, and crack-free. Custom patterns are supported.

Core Advantages

• Lightweight: A key reason to choose aluminum over steel for many applications is its density, which is only 33.3% that of steel.
• Easy Machinability: Aluminum is widely used for door & window frames, mechanical frames and HVAC systems thanks to convenient transportation and superior formability.
• Aesthetic Appearance: Steel tubes need galvanization to get a silvery-white finish, while aluminum is naturally silvery-white and compatible with diversified surface treatments.
• Excellent Corrosion Resistance: No anti-rust paint or anti-rust oil is required. The native oxide film protects the tube against acid, alkali and salt erosion.

Mechanical Property Comparison of Common Grades

Performance Parameter	6061-T6	6063-T5	6063-T6	5052-H32
Tensile Strength (MPa)	≥310	≥240	≥240	≥230
Yield Strength (MPa)	≥276	≥215	≥215	≥195
Elongation (%)	≥10	≥8	≥8	≥12
Hardness (HB)	95	73	73	60
Density (g/cm³)	2.70	2.70	2.70	2.68
Modulus of Elasticity (GPa)	68.9	68.9	68.9	70.3

Application Fields

• Construction: Mainly used for door and window frames, railings, supporting structures for large sunshades, canopies and venue roofs.
• Transportation & Aerospace: Lightweight components for automobiles, high-speed trains, ships and aircraft, such as interior brackets.
• Industrial Machinery: Frames for light or heavy machinery and guide rails for conveyor lines.
• Electronics & Furniture: Heat dissipation tubes, furniture legs, baffles, ceiling panels, display racks, columns for high-end furniture and home appliances.

Chemical Composition

Element	6061-T6 (%)	6063-T5/T6 (%)	5052-H32 (%)
Al (Aluminum)	Remainder	Remainder	Remainder
Mg (Magnesium)	0.80 ~ 1.20	0.45 ~ 0.90	2.20 ~ 2.80
Si (Silicon)	0.40 ~ 0.80	0.20 ~ 0.60	≤ 0.25
Cu (Copper)	0.15 ~ 0.40	≤ 0.10	≤ 0.10
Cr (Chromium)	0.04 ~ 0.35	≤ 0.10	0.15 ~ 0.35
Fe (Iron)	≤ 0.70	≤ 0.35	≤ 0.40

Other elements (Mn, Zn, Ti, etc.): Single element ≤0.15%, total content ≤0.15% for all three grades.

Sizes & Weight Chart

Weight Calculation Formula: W (kg/m) = [2 × (A + B) – 4t] × t × 0.00271.

A = Long side, B = Short side, t = Wall thickness, unit: mm.

Long side × Short side (mm)	Wall Thickness Range (mm)	Theoretical Weight Range (kg/m)
20×40	1.0 ~ 2.0	0.21 ~ 0.41
25×50	1.0 ~ 2.5	0.27 ~ 0.65
30×60	1.5 ~ 3.0	0.47 ~ 0.91
40×60	1.5 ~ 3.0	0.57 ~ 1.11
40×80	1.5 ~ 4.0	0.65 ~ 1.69
50×80	2.0 ~ 4.0	0.88 ~ 1.72
50×100	2.0 ~ 4.0	0.98 ~ 1.91
60×100	2.0 ~ 5.0	1.05 ~ 2.56

Imperial weight conversion: If you need imperial units, you can convert as follows: 1 kg/m ≈ 0.672 lb/ft.

Equivalent Imperial Sizes (ASTM B221)

Inch Size	Metric Dimension	Wall Thickness (inch / mm)
1/2″ × 1″	12.7×25.4mm	1/16″ (1.65mm)
1″ × 2″	25.4×50.8mm	1/8″ (3.18mm)
1.5″ × 3″	38.1×76.2mm	1/8″ (3.18mm)
2″ × 3″	50.8×76.2mm	1/8″ (3.18mm) or 3/16″ (4.78mm)
2″ × 4″	50.8×101.6mm	1/8″ (3.18mm) or 3/16″ (4.78mm)
3″ × 4″	76.2×101.6mm	3/16″ (4.78mm) or 1/4″ (6.35mm)
3″ × 6″	76.2×152.4mm	3/16″ (4.78mm) or 1/4″ (6.35mm)
4″ × 6″	101.6×152.4mm	3/16″ (4.78mm) or 1/4″ (6.35mm)

Processing Services

Fixed-length cutting, punching, tube bending, welding & assembly, anodizing, powder coating, CNC machining, custom extrusion mold development.

FAQ

How to select between 6061 and 6063 aluminum rectangular tubing?

Choose 6061 for load-bearing and structural strength requirements. Choose 6063 for complex profiles, premium surface finish and decorative applications.

Can aluminum rectangular tubing be welded?

Yes. TIG / MIG welding is applicable. Filler wire 4043 or 5356 is recommended for sound fusion between weld and base metal.

Are non-standard sizes available?

Yes. We support custom extrusion mold opening for non-standard sizes, special cross-sections and dimensions as per customer drawings.