When purchasing aluminum profiles for your project, 6063 aluminum angle is one of the most common and reliable choices. It is an architectural alloy known for its excellent corrosion resistance, smooth surface finish, and lightweight structure. This makes it a top choice for coastal regions, such as the UAE and other Middle East markets, where fighting rust is important.
However, many buyers get confused when they see different temper options, mainly 6063 T5 and 6063 T52. Choosing the wrong temper can lead to material deformation during processing or unnecessary extra costs.
What is 6063 Aluminum Angle?
6063 aluminum angle is an L-shaped structural profile extruded from an Al-Mg-Si (Aluminum-Magnesium-Silicon) alloy mix.
Here are its three core advantages:
1. Excellent Corrosion Resistance
The magnesium and silicon in the 6063 alloy allow the metal to naturally form a strong, invisible oxide layer when exposed to air. This layer stops further rusting.
For buyers in coastal or high-humidity regions like Dubai, Abu Dhabi, and other Middle East areas, salt in the air easily destroys standard steel structures. 6063 aluminum angle resists this saltwater corrosion perfectly. Whether used for outdoor solar brackets or exterior building trims, it remains virtually maintenance-free for years, saving huge replacement costs.
2. Perfect for Anodizing & Powder Coating
Compared to other alloys like 6061 or 7075, 6063 has the best extrusion properties. When the hot aluminum is pushed through the die, it comes out very clean, flat, and smooth without deep or rough extrusion lines.
Because the surface is so smooth, it acts as the perfect base for surface treatments. When you apply anodizing (which adds a protective and colored layer) or powder coating, the coating sticks evenly and firmly. This is why 6063 aluminum angles are always chosen for visible applications, such as glass curtain wall borders, display cabinets, and decorative door frames.
3. Lightweight Yet Structurally Reliable
The density of 6063 aluminum is only 2.7 g/cm³, which is about one-third the weight of carbon steel. However, its strength-to-weight ratio is impressive.
6063 aluminum angle provides reliable load-bearing support for framework corners, guide rails, and indoor partition walls, making transportation and on-site installation much faster and cheaper.
6063 T5 vs 6063 T52 Aluminum Angle
After the 6063 aluminum is extruded into an angle shape, it is soft. It must undergo heat treatment (cooling and aging) to gain its final mechanical strength. This treatment process is called a "temper."
Among all the tempers, T5 and T52 are the most commonly specified for aluminum angles. They are produced differently to meet specific industry and load requirements:
- 6063 T5: It provides medium strength and is highly cost-effective. It is designed for static loads, general construction, and decorative architectural framing.
- 6063 T52: It undergoes an extra stress-relief process. It provides higher dimensional stability and is designed for dynamic loads, heavy industrial equipment frames, and parts that require precision CNC machining without warping.
Mechanical Properties Comparison
| Mechanical Property | 6063-T5 | 6063-T52 |
| Tensile Strength (MPa) | ≥ 145 MPa | ≥ 160 MPa |
| Yield Strength (MPa) | ≥ 110 MPa | ≥ 130 MPa |
| Elongation (%) | ≥ 8% | ≥ 10% |
| Hardness (Webster) | ≥ 8 HW | ≥ 9 HW |
Chemical composition of 6063 aluminum angle
| Element | Composition (%) |
| Aluminum (Al) | 97.5% – 99.35% |
| Magnesium (Mg) | 0.45% – 0.90% |
| Silicon (Si) | 0.20% – 0.60% |
| Iron (Fe) | 0 – 0.35% |
| Chromium (Cr) | 0 – 0.10% |
| Copper (Cu) | 0 – 0.10% |
| Manganese (Mn) | 0 – 0.10% |
| Titanium (Ti) | 0 – 0.10% |
| Zinc (Zn) | 0 – 0.10% |
| Others(each) | 0-0.05% |
| Others(total) | 0 – 0.15% |
Industry Applications of 6063 T5 and 6063 T52 Aluminum Angle
1. Construction and Architectural Decoration
Recommended: 6063-T5
For general building uses, structural strength and surface finish are the main concerns. 6063-T5 accepts anodizing and powder coating perfectly. It is highly cost-effective and widely used in curtain walls, indoor partition frames, window and door frames, and edge protection trims.
Common sizes ordered for this sector: 20×20×2 mm, 40×40×3 mm, 50×50×5 mm.
2. Industrial Equipment & Automation Frames
Recommended: 6063-T52
When building frames for factory automation machines, conveyor belts, or heavy support brackets, straightness is highly required. 6063-T52 offers better stability, ensuring that your equipment frame remains perfectly straight and holds the heavy load evenly.
Common sizes ordered for this sector: 50×50×5 mm, 80×80×6 mm, 100×50×6 mm.
3. CNC Machining & Precision Parts
Recommended: 6063-T52
If you buy aluminum angles to manufacture precision brackets or mechanical parts using CNC machines, you must choose T52. When you remove material from a T5 angle, the hidden internal stress is released, which can cause the part to warp or twist unexpectedly. T52 has its stress relieved in the factory, so it stays flat and dimensionally accurate after CNC machining.
Send your technical drawings or usage details to our engineering team. We will provide a professional recommendation and a quick price quote within 24 hours.
6063 aluminum angle tolerance
| Thickness (in.) | Thickness tolerance (in.) | Leg Length (in.) | Leg tolerance (±in.) |
| ≤ 0.124" | ±0.006" | 0.250 - 0.624" | ±0.010" |
| 0.625 - 1.249" | ±0.012" | ||
| 1.250 - 2.499" | ±0.012" | ||
| 0.125 - 0.249" | ±0.007" | 0.250 - 0.624" | ±0.012" |
| 0.625 - 1.249" | ±0.014" | ||
| 1.250 - 2.499" | ±0.016" | ||
| 0.250 - 0.499" | ±0.008" | 0.250 - 0.624" | ±0.014" |
| 0.625 - 1.249" | ±0.016" | ||
| 1.250 - 2.499" | ±0.018" | ||
| 2.500 - 3.999" | ±0.020" | ||
| 0.500 - 0.749" | ±0.009" | 0.250 - 0.624" | ±0.016" |
| 0.625 - 1.249" | ±0.018" | ||
| 1.250 - 2.499" | ±0.020" | ||
| 2.500 - 3.999" | ±0.022" | ||
| 0.750 - 0.999" | ±0.010" | 0.250 - 0.624" | ±0.018" |
| 0.625 - 1.249" | ±0.020" | ||
| 1.250 - 2.499" | ±0.022" | ||
| 2.500 - 3.999" | ±0.025" | ||
| 4.000 - 5.999" | ±0.030" | ||
| 1.000 - 1.499" | ±0.012" | 0.250 - 0.624" | ±0.021" |
| 0.625 - 1.249" | ±0.023" | ||
| 1.250 - 2.499" | ±0.026" | ||
| 2.500 - 3.999" | ±0.030" | ||
| 4.000 - 5.999" | ±0.035" | ||
| 1.500 - 1.999" | ±0.014" | 0.250 - 0.624" | ±0.024" |
| 0.625 - 1.249" | ±0.026" | ||
| 1.250 - 2.499" | ±0.031" | ||
| 2.500 - 3.999" | ±0.036" | ||
| 4.000 - 5.999" | ±0.042" | ||
| 6.000 - 8.000" | ±0.050" | ||
| 2.000 - 3.999" | ±0.024" | 0.250 - 0.624" | ±0.034" |
| 0.625 - 1.249" | ±0.038" | ||
| 1.250 - 2.499" | ±0.048" | ||
| 2.500 - 3.999" | ±0.057" | ||
| 4.000 - 5.999" | ±0.068" | ||
| 6.000 - 8.000" | ±0.080" | ||
| 4.000 - 5.999" | ±0.034" | 0.250 - 0.624" | ±0.044" |
| 0.625 - 1.249" | ±0.050" | ||
| 1.250 - 2.499" | ±0.064" | ||
| 2.500 - 3.999" | ±0.078" | ||
| 4.000 - 5.999" | ±0.094" | ||
| 6.000 - 8.000" | ±0.110" | ||
| 6.000 - 7.999" | ±0.044" | 0.250 - 0.624" | ±0.054" |
| 0.625 - 1.249" | ±0.062" | ||
| 1.250 - 2.499" | ±0.082" | ||
| 2.500 - 3.999" | ±0.099" | ||
| 4.000 - 5.999" | ±0.120" | ||
| 6.000 - 8.000" | ±0.140" | ||
| 8.000 - 9.999" | ±0.054" | 0.250 - 0.624" | ±0.064" |
| 0.625 - 1.249" | ±0.074" | ||
| 1.250 - 2.499" | ±0.100" | ||
| 2.500 - 3.999" | ±0.120" | ||
| 4.000 - 5.999" | ±0.145" | ||
| 6.000 - 8.000" | ±0.170" |
Strict Quality Control System
GNEE follow international standards like ASTM B221 and EN 573 / EN 755. Our quality control system includes four main steps:
- Raw Material Inspection: We check the chemical composition of the aluminum billets before extrusion to ensure magnesium and silicon levels are standard.
- Production Control: Workers use calipers and angle gauges online to check straightness and thickness.
- Mechanical Testing: We test the tensile strength and hardness of the finished angles in our lab.
- Third-Party Inspection: We fully support independent inspections. Buyers can arrange SGS, BV, or TUV inspectors to our factory to check the dimension, weight, surface, and quantity before container loading.
Contact us today to request a free sample, or ask our sales team to send you our latest Mill Test Certificate (MTC) and past third-party inspection reports.
Packaging and Delivery
GNEE uses a standardized export packing method:
- Each aluminum angle is covered with a clear protective plastic film.
- The bundles are wrapped tightly with waterproof kraft paper.
- The goods are placed on strong wooden pallets for safe forklift handling.
- Steel or heavy-duty plastic straps are used to fix the cargo, preventing movement inside the shipping container.
- We offer fast delivery. Standard orders take 7 to 15 days, and urgent orders can be finished within 7 days. We ship from major Chinese ports like Tianjin, Shanghai, or Qingdao.
Aluminum Price Reference
At GNEE, we do not use fixed, hidden prices. Our aluminum angle price is linked to the real-time SMM (Shanghai Metal Market) aluminum ingot price.
Our Price Formula:
Final Price = SMM Aluminum Ingot Price + Processing Fee + Freight
- T5 Processing Fee: Standard and lower.
- T52 Processing Fee: Usually 5% to 10% higher than T5 due to the extra stress-relief processing and stretching time.
Frequently Asked Questions (FAQs)
Stop worrying about quality and delayed shipments. Send your inquiry to GNEE now to get our latest SMM-based quotation and an updated stock list!
