Engineered for architectural aesthetics and structural reliability, 6063 aluminum square tube delivers the industry's best combination of smooth finish, corrosion resistance, and weldability—perfect for frames, storefronts, railings, and lightweight machinery.
With ISO-certified aluminum stock in a full range of sizes—and custom lengths or tempers available on short lead times—Chalco is ready to supply your project.Request a Quick Quote
Specifications for 6063 aluminum square tube
- ASTM B221 — Extruded Aluminum Alloy Tubes
- AMS QQ-A-200/9 — 6063 Extruded Bar, Rod & Tube
- EN 755-9 — Mechanical Properties for Extruded Profiles
- EN 12020-2 — Precision Extruded Profiles Tolerances
- ISO 6362-2 — Wrought Aluminium Extruded Tubes
- ISO 9001:2015 — Quality Management System Certified
- ISO 14001:2015 — Environmental Management System Certified
- PED 2014/68/EU — CE Compliance for Pressure Equipment
ISO-certified quality assurance with full material traceability, low-MOQ customization, and rapid turnaround—contact us now for a quote!
Popular 6063 aluminum square tube sizes
Our 6063-T52 square tubes (0.50″–8.00″, 0.062″–0.375″ wall) deliver lightweight strength and precision for any build.
| Size | Size (mm) | Wall (in) | Weight (lb/ft) | Finish |
| 0.50 × 0.50" | 12.7 × 12.7 mm | 0.062 | 0.20 | Mill finish |
| 0.75 × 0.75" | 19.05 × 19.05 mm | 0.055 | 0.30 | Mill finish |
| 0.75 × 0.75" | 19.05 × 19.05 mm | 0.062 | 0.30 | Mill finish |
| 0.75 × 0.75" | 19.05 × 19.05 mm | 0.093 | 0.37 | Mill finish |
| 0.75 × 0.75" | 19.05 × 19.05 mm | 0.125 | 0.37 | Mill finish |
| 1.00 × 1.00" | 25.4 × 25.4 mm | 0.040 | 0.30 | Mill finish |
| 1.00 × 1.00" | 25.4 × 25.4 mm | 0.062 | 0.30 | Mill finish |
| 1.00 × 1.00" | 25.4 × 25.4 mm | 0.093 | 0.52 | Mill finish |
| 1.00 × 1.00" | 25.4 × 25.4 mm | 0.100 | 0.52 | Mill finish |
| 1.00 × 1.00" | 25.4 × 25.4 mm | 0.125 | 0.52 | Mill finish |
| 1.25 × 1.25" | 31.75 × 31.75 mm | 0.062 | 0.35 | Mill finish |
| 1.25 × 1.25" | 31.75 × 31.75 mm | 0.093 | 0.68 | Mill finish |
| 1.25 × 1.25" | 31.75 × 31.75 mm | 0.125 | 0.68 | Mill finish |
| 1.50 × 1.50" | 38.1 × 38.1 mm | 0.062 | 0.50 | Mill finish |
| 1.50 × 1.50" | 38.1 × 38.1 mm | 0.093 | 0.81 | Mill finish |
| 1.50 × 1.50" | 38.1 × 38.1 mm | 0.125 | 0.81 | Mill finish |
| 1.50 × 1.50" | 38.1 × 38.1 mm | 0.188 | 1.20 | Mill finish |
| 1.75 × 1.75" | 44.45 × 44.45 mm | 0.125 | 1.00 | Mill finish |
| 2.00 × 2.00" | 50.8 × 50.8 mm | 0.125 | 1.11 | Mill finish |
| 2.00 × 2.00" | 50.8 × 50.8 mm | 0.188 | 1.60 | Mill finish |
| 2.00 × 2.00" | 50.8 × 50.8 mm | 0.250 | 2.06 | Mill finish |
| 2.25 × 2.25" | 57.15 × 57.15 mm | 0.095 | — | Mill finish |
| 2.50 × 2.50" | 63.5 × 63.5 mm | 0.125 | 1.40 | Mill finish |
| 2.50 × 2.50" | 63.5 × 63.5 mm | 0.250 | 2.65 | Mill finish |
| 3.00 × 3.00" | 76.2 × 76.2 mm | 0.093 | 1.70 | Mill finish |
| 3.00 × 3.00" | 76.2 × 76.2 mm | 0.125 | 1.70 | Mill finish |
| 3.00 × 3.00" | 76.2 × 76.2 mm | 0.188 | 2.50 | Mill finish |
| 3.00 × 3.00" | 76.2 × 76.2 mm | 0.250 | 3.25 | Mill finish |
| 3.50 × 3.50" | 88.9 × 88.9 mm | 0.125 | 2.00 | Mill finish |
| 4.00 × 4.00" | 101.6 × 101.6 mm | 0.125 | 2.28 | Mill finish |
| 4.00 × 4.00" | 101.6 × 101.6 mm | 0.250 | 4.50 | Mill finish |
| 4.00 × 4.00" | 101.6 × 101.6 mm | 0.375 | 6.40 | Mill finish |
| 5.00 × 5.00" | 127 × 127 mm | 0.125 | 2.84 | Mill finish |
| 6.00 × 6.00" | 152.4 × 152.4 mm | 0.125 | 3.42 | Mill finish |
| 8.00 × 8.00" | 203.2 × 203.2 mm | 0.188 | 6.84 | Mill finish |
Jump to our stock sizes at the bottom of this page for full specifications.
6063 aluminum square tube — typical properties (T52 temper)
| Property | Metric | Imperial |
| Density | 2.70 g/cm³ | 0.0975 lb/in³ |
| Ultimate Tensile Strength | 186 MPa | 27 ksi |
| Yield Strength (0.2 % offset) | 145 MPa | 21 ksi |
| Shear Strength | 110 MPa | 16 ksi |
| Modulus of Elasticity | 69 GPa | 10, 000 ksi |
| Fatigue Strength (5 × 108 cycles) | 69 MPa | 10 ksi |
| Elongation @ Break (2") | 12 % | |
| Brinell Hardness (HB) | 60 | |
| Rockwell Hardness (HRB) | 17 | |
| Thermal Conductivity | 200 W/m·K | 116 BTU·in/hr·ft²·°F |
| Electrical Conductivity | 58 % IACS | 35 MS/m |
| Coeff. of Thermal Expansion | 23.4 µm/m·K | 13.0 µin/in·°F |
| Melting Range | 615 – 650 °C | 1, 140 – 1, 202 °F |
Values shown are typical for extruded 6063-T52 tube and may vary with profile geometry or additional heat-treat steps. If you need tighter tolerances or certified test reports, please Request a Quick Quote
we provide ISO-certified QC, full material traceability, and mill test certificates on request.
Chemical composition — alloy 6063
| Element | Weight % |
| Aluminum (Al) | Balance ≈ 98.9 % |
| Magnesium (Mg) | 0.45 – 0.90 % |
| Silicon (Si) | 0.20 – 0.60 % |
| Iron (Fe) | < 0.35 % |
| Copper (Cu) | < 0.10 % |
| Manganese (Mn) | < 0.10 % |
| Chromium (Cr) | < 0.10 % |
| Titanium (Ti) | < 0.10 % |
| Zinc (Zn) | < 0.10 % |
Composition ranges follow ASTM B221 / EN 573-3 limits for 6063 alloy. Trace impurities ≤ 0.05 % each, ≤ 0.15 % total. Certification with mill test report (MTR) available on request.
6063 aluminum square tube inventory video showcase
Typical applications of 6063 aluminum square tube
- Architectural Framing — window & door frames, curtain-wall mullions, storefront systems
- Ornamental Railings & Fences — handrails, safety guards, decorative gates, balcony balusters
- Structural Supports — lightweight columns, roof trusses, awning arms, solar panel racks
- Display & Signage — sign frames, LED housing, exhibit booths, retail shelving
- Transportation Fabrication — trailer beds, camper frames, bike racks, marine rails
- General Fabrication — machine guards, equipment enclosures, work tables, storage racks
Thanks to its low weight, seamless 90° corners, and excellent corrosion resistance, 6063 square tube is the go-to choice whenever strength, aesthetics, and easy fabrication must align.
Value-added services for 6063 aluminum square tube
- Precision Cut-to-Length — ±0.5 mm tolerance, deburring & 45-/60-degree chamfering included
- Tube Laser Cutting — high-speed CO₂ / fiber lasers for slots, holes, miters & complex patterns
- CNC Fabrication — drilling, tapping, countersinking, TIG/MIG welding, fixture kitting
- Surface Finishing — clear & coloured anodizing, powder coating, sand-blast matte
- Kitting & Assembly — end caps, hinges, T-slot connectors packed per project line-item
- Protective Packaging — PE wrap + cardboard sleeve or export-grade plywood crate
- Logistics Options — EXW, FOB, CIF, and DDP door-to-door to North America, EU, MEA & APAC
- Rapid Turnaround — 2-5 days on stock sizes; 7-15 days on custom runs
- Bulk Discount Pricing — tiered rates starting at 300 kg; blanket orders welcome
- Will-Call Pick-Up — same-day collection from our Ningbo warehouse
Need an all-inclusive quote with freight? Send your cut list and delivery postcode to sale@chalcoaluminum.com—we'll respond within hours.
6063 aluminum square tube price guide
- LME 3-Month Benchmark: ~US $2, 570 / t (04 Aug 2025):contentReference[oaicite:0]{index=0}
- China Mega-Mill Advantage: Captive power plant slashes energy costs by 20 %+, keeping extrusion fees among the world's lowest.
- Direct-from-Press Supply: Integrated cast-to-extrude line—no trading middlemen, no hidden margins.
- Lean MOQ Policy: Custom runs from 300 kg; tiered discounts for ≥ 10 t production programs.
- Rapid Lead Time: 7–12 days ex-press (mill finish); +5 days for anodized or powder-coated parts.
- Flexible Incoterms: EXW / FOB Ningbo / CIF / DDP to North America, EU, MEA, and APAC.
Get factory-direct pricing—email your cut list now for a same-day quote!
6063 aluminum square tube fittings & accessories
- 90° Corner Connector (QS-90): Fits 25 × 25 mm tubes; shear load 1.5 kN.
- Adjustable 45° Joint (QS-45): ±60° lockable; moment 1.2 kN·m.
- T-Slot Nut M8 (TN-8080): Tensile 8 kN; 8020-series compatible.
- End Cap w/ Insert (EC-25): Seals tube ends; accepts M10 leveling feet.
- Quick-Release Gusset (QR-G30): Torque capacity 28 N·m; tool-less removal.
- Heavy-Duty Hinge (HDH-50): Rated for 40 kg doors; 20, 000+ cycles.
Bundle tubes and connectors for consolidated freight and extra savings—request our fittings catalog today!
Popular related 6063 square tube products
6063-bus-pipe
6063-busbar
6063-oil-tanker-tube
6063 Digital Shell Sheet
6063-aluminum-flat-bar
6063-aluminum-tube
6063-aluminum-sheet
6063-aluminum-rod
6063-aerospace-flat-bar
Frequently asked questions
What is the difference between 6061 and 6063 aluminum square tube?
6061 aluminum offers higher tensile strength (up to 310 MPa) and better machinability, making it ideal for structural applications, while 6063 aluminum provides superior surface finish and extrudability with a tensile strength around 190 MPa, perfect for architectural profiles and decorative trim.
What is 6063 aluminum used for?
6063 aluminum is commonly used in window frames, door frames, curtain walls, furniture, handrails, and other architectural applications where a smooth surface finish and precise extruded shapes are required.
What is the equivalent of 6063 aluminum?
International equivalents include EN AW-6063 (AlMg0.7Si), UNS A96063, and JIS A6063. It is also referred to as Alloy 6063 in ASTM specifications.
Is 6063 aluminum pipe bendable?
Yes, 6063 aluminum in O-temper can be bent easily with a minimum bend radius of about 3× the tube diameter. When heat-treated to T5 or T6 temper, care must be taken to avoid cracking—pre-bending in the O-state followed by re-aging is recommended for tight bends.
Feel free to leave your requirements below, and we will respond to you as quickly as possible.Quick Quote
6063 aluminum square tube stock sizes
6063 aluminum square tube is an extruded tubing widely used in various manufacturing projects, with its notable advantages being lightweight and corrosion resistance.
Chalco is the largest aluminum alloy manufacturer and supplier in China. We have a vast range of molds and inventory, providing customized production and cutting services.Quick Quote
| Specifications (in) | Width (in) | Height (in) | Wall (in) |
| 6063-T5 Aluminum Square Tube 0.394" × 0.394" × 0.039" wall | 0.394" | 0.394" | 0.039" |
| 6063-T5 Aluminum Square Tube 0.591" × 0.591" × 0.039" wall | 0.591" | 0.591" | 0.039" |
| 6063-T5 Aluminum Square Tube 0.591" × 0.591" × 0.059" wall | 0.591" | 0.591" | 0.059" |
| 6063-T5 Aluminum Square Tube 0.591" × 0.591" × 0.079" wall | 0.591" | 0.591" | 0.079" |
| 6063-T5 Aluminum Square Tube 0.787" × 0.787" × 0.039" wall | 0.787" | 0.787" | 0.039" |
| 6063-T5 Aluminum Square Tube 0.787" × 0.787" × 0.059" wall | 0.787" | 0.787" | 0.059" |
| 6063-T5 Aluminum Square Tube 0.787" × 0.787" × 0.079" wall | 0.787" | 0.787" | 0.079" |
| 6063-T5 Aluminum Square Tube 0.787" × 0.787" × 0.118" wall | 0.787" | 0.787" | 0.118" |
| 6063-T5 Aluminum Square Tube 0.984" × 0.984" × 0.039" wall | 0.984" | 0.984" | 0.039" |
| 6063-T5 Aluminum Square Tube 0.984" × 0.984" × 0.047" wall | 0.984" | 0.984" | 0.047" |
| 6063-T5 Aluminum Square Tube 0.984" × 0.984" × 0.059" wall | 0.984" | 0.984" | 0.059" |
| 6063-T5 Aluminum Square Tube 0.984" × 0.984" × 0.079" wall | 0.984" | 0.984" | 0.079" |
| 6063-T5 Aluminum Square Tube 0.984" × 0.984" × 0.098" wall | 0.984" | 0.984" | 0.098" |
| 6063-T5 Aluminum Square Tube 0.984" × 0.984" × 0.118" wall | 0.984" | 0.984" | 0.118" |
| 6063-T5 Aluminum Square Tube 1.181" × 1.181" × 0.039" wall | 1.181" | 1.181" | 0.039" |
| 6063-T5 Aluminum Square Tube 1.181" × 1.181" × 0.059" wall | 1.181" | 1.181" | 0.059" |
| 6063-T5 Aluminum Square Tube 1.181" × 1.181" × 0.079" wall | 1.181" | 1.181" | 0.079" |
| 6063-T5 Aluminum Square Tube 1.181" × 1.181" × 0.098" wall | 1.181" | 1.181" | 0.098" |
| 6063-T5 Aluminum Square Tube 1.181" × 1.181" × 0.118" wall | 1.181" | 1.181" | 0.118" |
| 6063-T5 Aluminum Square Tube 1.378" × 1.378" × 0.079" wall | 1.378" | 1.378" | 0.079" |
| 6063-T5 Aluminum Square Tube 1.496" × 1.496" × 0.059" wall | 1.496" | 1.496" | 0.059" |
| 6063-T5 Aluminum Square Tube 1.496" × 1.496" × 0.079" wall | 1.496" | 1.496" | 0.079" |
| 6063-T5 Aluminum Square Tube 1.575" × 1.575" × 0.039" wall | 1.575" | 1.575" | 0.039" |
| 6063-T5 Aluminum Square Tube 1.575" × 1.575" × 0.079" wall | 1.575" | 1.575" | 0.079" |
| 6063-T5 Aluminum Square Tube 1.575" × 1.575" × 0.098" wall | 1.575" | 1.575" | 0.098" |
| 6063-T5 Aluminum Square Tube 1.575" × 1.575" × 0.118" wall | 1.575" | 1.575" | 0.118" |
| 6063-T5 Aluminum Square Tube 1.575" × 1.575" × 0.157" wall | 1.575" | 1.575" | 0.157" |
| 6063-T5 Aluminum Square Tube 1.575" × 1.575" × 0.197" wall | 1.575" | 1.575" | 0.197" |
| 6063-T5 Aluminum Square Tube 1.772" × 1.772" × 0.079" wall | 1.772" | 1.772" | 0.079" |
| 6063-T5 Aluminum Square Tube 1.969" × 1.969" × 0.039" wall | 1.969" | 1.969" | 0.039" |
| 6063-T5 Aluminum Square Tube 1.969" × 1.969" × 0.079" wall | 1.969" | 1.969" | 0.079" |
| 6063-T5 Aluminum Square Tube 1.969" × 1.969" × 0.098" wall | 1.969" | 1.969" | 0.098" |
| 6063-T5 Aluminum Square Tube 1.969" × 1.969" × 0.118" wall | 1.969" | 1.969" | 0.118" |
| 6063-T5 Aluminum Square Tube 1.969" × 1.969" × 0.157" wall | 1.969" | 1.969" | 0.157" |
| 6063-T5 Aluminum Square Tube 1.969" × 1.969" × 0.197" wall | 1.969" | 1.969" | 0.197" |
| 6063-T5 Aluminum Square Tube 2.362" × 2.362" × 0.079" wall | 2.362" | 2.362" | 0.079" |
| 6063-T5 Aluminum Square Tube 2.362" × 2.362" × 0.118" wall | 2.362" | 2.362" | 0.118" |
| 6063-T5 Aluminum Square Tube 2.362" × 2.362" × 0.157" wall | 2.362" | 2.362" | 0.157" |
| 6063-T5 Aluminum Square Tube 2.362" × 2.362" × 0.197" wall | 2.362" | 2.362" | 0.197" |
| 6063-T5 Aluminum Square Tube 2.362" × 2.362" × 0.236" wall | 2.362" | 2.362" | 0.236" |
| 6063-T5 Aluminum Square Tube 2.756" × 2.756" × 0.118" wall | 2.756" | 2.756" | 0.118" |
| 6063-T5 Aluminum Square Tube 2.756" × 2.756" × 0.157" wall | 2.756" | 2.756" | 0.157" |
| 6063-T5 Aluminum Square Tube 2.756" × 2.756" × 0.197" wall | 2.756" | 2.756" | 0.197" |
| 6063-T5 Aluminum Square Tube 2.756" × 2.756" × 0.315" wall | 2.756" | 2.756" | 0.315" |
| 6063-T5 Aluminum Square Tube 3.15" × 3.15" × 0.059" wall | 3.15" | 3.15" | 0.059" |
| 6063-T5 Aluminum Square Tube 3.15" × 3.15" × 0.118" wall | 3.15" | 3.15" | 0.118" |
| 6063-T5 Aluminum Square Tube 3.15" × 3.15" × 0.157" wall | 3.15" | 3.15" | 0.157" |
| 6063-T5 Aluminum Square Tube 3.15" × 3.15" × 0.197" wall | 3.15" | 3.15" | 0.197" |
| 6063-T5 Aluminum Square Tube 3.15" × 3.15" × 0.315" wall | 3.15" | 3.15" | 0.315" |
| 6063-T5 Aluminum Square Tube 3.15" × 3.15" × 0.394" wall | 3.15" | 3.15" | 0.394" |
| 6063-T5 Aluminum Square Tube 3.543" × 3.543" × 0.118" wall | 3.543" | 3.543" | 0.118" |
| 6063-T5 Aluminum Square Tube 3.543" × 3.543" × 0.157" wall | 3.543" | 3.543" | 0.157" |
| 6063-T5 Aluminum Square Tube 3.543" × 3.543" × 0.197" wall | 3.543" | 3.543" | 0.197" |
| 6063-T5 Aluminum Square Tube 3.937" × 3.937" × 0.118" wall | 3.937" | 3.937" | 0.118" |
| 6063-T5 Aluminum Square Tube 3.937" × 3.937" × 0.157" wall | 3.937" | 3.937" | 0.157" |
| 6063-T5 Aluminum Square Tube 3.937" × 3.937" × 0.197" wall | 3.937" | 3.937" | 0.197" |
| 6063-T5 Aluminum Square Tube 3.937" × 3.937" × 0.236" wall | 3.937" | 3.937" | 0.236" |
| 6063-T5 Aluminum Square Tube 3.937" × 3.937" × 0.315" wall | 3.937" | 3.937" | 0.315" |
| 6063-T5 Aluminum Square Tube 3.937" × 3.937" × 0.394" wall | 3.937" | 3.937" | 0.394" |
| 6063-T5 Aluminum Square Tube 4.331" × 4.331" × 0.118" wall | 4.331" | 4.331" | 0.118" |
| 6063-T5 Aluminum Square Tube 4.724" × 4.724" × 0.118" wall | 4.724" | 4.724" | 0.118" |
| 6063-T5 Aluminum Square Tube 4.724" × 4.724" × 0.197" wall | 4.724" | 4.724" | 0.197" |
| 6063-T5 Aluminum Square Tube 4.724" × 4.724" × 0.236" wall | 4.724" | 4.724" | 0.236" |
| 6063-T5 Aluminum Square Tube 4.724" × 4.724" × 0.276" wall | 4.724" | 4.724" | 0.276" |
| 6063-T5 Aluminum Square Tube 5.276" × 5.276" × 0.236" wall | 5.276" | 5.276" | 0.236" |
| 6063-T5 Aluminum Square Tube 5.906" × 5.906" × 0.118" wall | 5.906" | 5.906" | 0.118" |
| 6063-T5 Aluminum Square Tube 5.906" × 5.906" × 0.236" wall | 5.906" | 5.906" | 0.236" |
| 6063-T5 Aluminum Square Tube 7.874" × 7.874" × 0.118" wall | 7.874" | 7.874" | 0.118" |
| 6063-T5 Aluminum Square Tube 7.874" × 7.874" × 0.138" wall | 7.874" | 7.874" | 0.138" |