What Is 6063 Aluminum Square Tube?
6063 aluminum square tube is an extruded Al-Mg-Si alloy product known for its excellent surface finish, superior corrosion resistance, and high formability. While buyers often use 6063 aluminum sheet for flat surface cladding, the square tube is specifically extruded for architectural framework, decorative trim, and light structural support. It is the global standard for applications requiring flawless anodizing.
Technical Specifications of 6063 Extruded Aluminum Tube
Engineers need precise data to calculate structural loads and fitment. Below are the standard technical specifications for our 6063 square tube supply.
6063 Aluminum Square Tube Specifications
| Parameter | Value |
|---|---|
| Alloy | 6063 (Al-Mg-Si) |
| Temper | T5 / T6 |
| Standards | ASTM B221 / EN 755 / GB/T 5237 |
| Size Range (Side Length) | 10×10 mm – 300×300 mm |
| Wall Thickness | 0.5-50 mm (custom available) |
| Length | 3 m / 5.8 m / 6 m (cut-to-length available) |
| Surface Finish | Mill / anodized (clear or color) / powder coated |
Need a non-standard dimension or specific wall thickness?
We cut custom extrusion dies to match your exact CAD drawings. Send your profile specifications to our engineering team, and we will provide a comprehensive die cost and unit price quote within 24 hours.
How We Manufacture 6063 Aluminum Profile and Plate
Producing a straight, dimensionally accurate square tube requires strict temperature control. Here is the actual production process inside our extrusion workshop.
1. Billet Heating (Homogenization): Raw 6063 aluminum billets are heated in a homogenizing furnace. This ensures the magnesium and silicon are evenly distributed, preventing the metal from tearing when pushed through the die.
2. High-Tonnage Extrusion: The heated billet is forced through a precision steel die using hydraulic presses. The metal flows around a mandrel to create the hollow square shape.
3. Stretching and Straightening: This is a critical step many buyers overlook. As the metal cools, it naturally warps. We use hydraulic stretchers to pull the tube from both ends, removing internal stress and ensuring the profile is perfectly straight.
4. Artificial Aging: The tubes are placed in large aging ovens to achieve the specific temper. Holding the metal at exact temperatures hardens it to the T5 or T6 state.
5. Surface Treatment: Depending on the order, the tubes proceed to the anodizing bath, acid cleaning station, or powder-coating line.
GNEE Factory Equipment for 6063 Aluminum Flat Bar and Square Tube
To guarantee stable production capacity and consistent mechanical properties, a factory must have the right hardware.
GNEE's extrusion workshop is fully equipped to handle both micro-profiles and massive architectural beams. Our facility includes:
- Advanced aluminum billet homogenizing furnaces.
- Multiple extrusion press lines ranging from 600 tons to 1800 tons. (This allows us to extrude thin-walled tubes and thick solid 6063 aluminum flat bar simultaneously).
- Automated stretching and straightening machines to guarantee tight dimensional tolerances.
- Calibrated aging furnaces for precise T5 and T6 heat treatments.
- In-house anodizing lines (up to 25 microns) and electrostatic powder coating production lines.
Export Packaging Standard for 6063 Aluminum Checker Plate & Tubes
In international trade, manufacturing a good product is only 50% of the job. The other 50% is ensuring it survives sea freight. Aluminum is relatively soft; vibrations inside a shipping container will cause severe scratches if not packed correctly.
Whether you order standard tubes or decorative 6063 aluminum checker plate, our export packaging protocol is strict:
- Surface Protection: A protective PE film is applied directly to the metal surface (optional, based on your request).
- Interleaving: Each tube is separated by EPE (pearl cotton) or tightly wrapped in plastic shrink film to prevent metal-to-metal friction and stop ocean moisture from causing white rust.
- Crating: The bundles are strapped securely into fumigated wooden export cases or onto wooden pallets tailored for forklift handling.
Tip: We strongly recommend specifying a length of 5.8 meters per tube. This perfectly fits inside a standard 20-foot shipping container (FCL), maximizing your freight efficiency.
Core Applications of 6063 Aluminum Square Profile
Because 6063 strikes a perfect balance between moderate strength and an exceptional cosmetic finish, it is the primary choice for the following sectors:
- Architectural Framework: Commercial window and door frames, glass partition channels, and curtain wall structures. Its natural corrosion resistance handles rain and UV exposure easily.
- Industrial & Automation: Equipment frames, safety enclosures, conveyor supports, and lightweight structural systems.
- Furniture & Interior Decoration: High-end aluminum furniture framing, retail display racks, shower enclosures, and modern lighting fixtures.
Real Industrial Use Cases: 6063 Aluminum Sheet
To understand material selection, look at how other engineers use it on the job site.
Case 1: Commercial Glass Curtain Wall Project
Material Selected: 6063 T5 Square Tube (100x100mm, 3mm wall thickness).
The Requirement: The client needed a framework that was lightweight to reduce the building's dead load, but required a flawless 15-micron clear anodized finish to match the architectural design.
The Result: 6063 T5 provided the perfect grain structure for uniform anodizing. The air-cooling process prevented the tubes from warping, ensuring the glass panels fit perfectly without installation delays.
Case 2: Robotic Automation Equipment Frame
Material Selected: 6063 T6 Square Tube (50x50mm, 4mm wall thickness).
The Requirement: The factory floor required a rigid machine base. Cosmetic appearance was secondary to yield strength and load-bearing capacity.
The Result: By switching to the water-quenched T6 temper, the yield strength increased to over 160 MPa. The frame provided the necessary stability for the robotic arms while keeping the overall equipment weight low.
6063 T5 vs T6 Extrusion
| Alloy & Temper | Thickness (mm) | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HBW) |
|---|---|---|---|---|---|
| 6063-T5 | ≤3.0 | ≥175 | ≥130 | - | ≥65 |
| 6063-T5 | 3.0–25.0 | ≥160 | ≥110 | ≥7 | ≥65 |
| 6063-T6 | ≤3.0 | ≥215 | ≥170 | - | ≥75 |
| 6063-T6 | 3.0–25.0 | ≥195 | ≥160 | ≥8 | ≥75 |
GNEE Supply Capability for 6063 Custom Aluminum Tube
GNEE is a direct-from-factory supplier designed to serve B2B buyers, fabrication shops, and construction firms globally. We do not just sell stock material; we act as your outsourced manufacturing partner.
What we provide:
- Custom Dimensions: Custom Outer Diameter (OD), wall thicknesses, and exact cut-to-length services to reduce your scrap rate.
- Multiple Tempers: We precisely control aging ovens to supply guaranteed T5 and T6 mechanical properties.
- OEM Extrusion Dies: We open new custom extrusion molds based on your CAD drawings within 10 to 15 days.
- Flexible Volume: Small Minimum Order Quantities (MOQ) available for prototype trial orders, along with steady bulk production for large-scale construction projects.
Partner with GNEE for reliable, factory-direct aluminum supply. Send us your required sizes, temper, surface finish, and quantity today to receive our latest wholesale extruded aluminum tubing price list.