6063 aluminum alloy is strong and looks nice. Both T5 and T6 have almost the same chemical parts.
| Component | 6063-T5 | 6063-T6 |
| Silicon (Si) | 0.20-0.6% | 0.2-0.6% |
| Iron (Fe) | ≤0.35% | ≤0.35% |
| Copper (Cu) | ≤0.10% | ≤0.10% |
| Manganese (Mn) | ≤0.10% | ≤0.10% |
| Magnesium (Mg) | 0.45-0.9% | 0.35-0.6% |
| Chromium (Cr) | ≤0.10% | ≤0.10% |
| Zinc (Zn) | ≤0.10% | ≤0.10% |
| Titanium (Ti) | ≤0.10% | ≤0.10% |
| Aluminum (Al) | Rest | Rest |
What is 6063 aluminum square bar used for?
Appearance-critical components and light structural applications: decorative and architectural aluminum square bars for curtain wall frameworks, doors and windows, display systems, signage supports, enclosures, and parts requiring an anodize-ready surface finish.
6063 aluminum square bar is widely selected where surface quality, corrosion resistance, and dimensional stability are more important than extreme strength.
6063-T5 vs 6063-T6 vs 6063-T651 - what's the difference?
T5: Artificially aged after forming; offers better bendability and formability, commonly used for decorative aluminum square bars.
T6: Solution heat-treated and artificially aged; provides higher strength for load-bearing aluminum square bar applications.
T651: T6 plus stress-relieving by stretching; preferred for thicker 6063 aluminum square bars requiring improved flatness and machining stability.
Do you stock 4×8 and cut-to-size?
Yes. GNEE stocks common sizes of 6063 aluminum square bar and offers cut-to-length services based on customer drawings or specifications. Custom sizes and tolerances are available on request.
How is price calculated? What's the price per pound?
Pricing of 6063 aluminum square bar depends on LME aluminum prices plus regional premiums, cross-section size, length, temper (T5, T6, T651), surface finish (such as anodizing), and cutting requirements.
Use GNEE's aluminum pricing tools or request an Instant Quote for an accurate offer.
Can you match anodizing color with aluminum square bars and other components?
Yes. GNEE can anodize 6063 aluminum square bars in the same batch as matching aluminum plates or profiles to minimize color variation (ΔE). Both decorative anodizing and hard anodizing options are available.
Do you ship worldwide?
Yes. GNEE ships 6063 aluminum square bars globally and supports EXW, FOB, CIF, DAP, and DDP terms for selected markets. All shipments use export-grade packaging and include complete shipping and customs documentation.
