6063-T5 vs 6063-T6 Aluminum Extrusion: Complete Difference Comparison Guide
6063-T5 and 6063-T6 are two types of aluminum extrusions. Both use the same base alloy, but they go through different heat treatments.
6063-T5 is cooled by air after forming. It then aged to improve its strength. This process makes the metal easier to work with and shape. People use 6063-T5 for trim, frames, and applications where bending or shaping is important.
6063-T6 is cooled quickly in water after forming. It then goes through artificial aging, which makes it much stronger and harder than T5. This extra strength is useful for heavy-duty frames and structural parts.
Key takeaways:
- 6063-T5 is easier to shape and bend.
- 6063-T6 is stronger and better for load-bearing jobs.
Choosing between them depends on whether you need flexibility or strength. Let’s look closer at how each performs in real projects.
What is 6063-T5 Aluminum?
6063-T5 aluminum is an alloy made mainly from aluminum, magnesium, and silicon. Manufacturers produce it by extruding the metal, cooling it with air, and then aging it at a lower temperature. This process gives the alloy medium strength.
6063-T5 is easy to shape and cut. It resists corrosion well, even outdoors. The surface looks smooth and takes paint or anodizing easily.
Common uses for 6063-T5 include window frames, door frames, and trim. Builders like it for its clean appearance and workability.
Key facts:
- Medium strength
- Good corrosion resistance
- Smooth surface finish
- Easy to form and weld
6063-T5 aluminum is reliable and practical. It fits many projects where looks and performance both matter.
What is 6063-T6 Aluminum Alloy?
6063-T6 aluminum is an alloy made from aluminum, magnesium, and silicon. Manufacturers shape the alloy at high temperature, cool it quickly in water, and then heat it again to age it. This process is called quenching and artificial aging.
The T6 temper gives this alloy high strength and hardness. It is stronger and harder than 6063-T5. However, it is less flexible and can be harder to bend or shape.
People use 6063-T6 for parts that need to support weight or handle stress. Common uses include heavy-duty frames and structural supports.
Key facts:
- High strength
- Hard surface
- Less flexible than T5
- Used for load-bearing and structural parts
6063-T6 aluminum is the strong choice for demanding jobs. It stands up well when strength matters most.
Properties Comparison: 6063-T5 vs 6063-T6
Heat Treatment
- 6063-T5 uses air cooling and aging. This process keeps the metal stable and limits shape changes.
- 6063-T6 uses water cooling and aging. This process increases strength and hardness but makes the metal more likely to deform.
Physical Properties
- 6063-T5 has good corrosion resistance and is easy to shape. It works well for interior parts and light structures.
- 6063-T6 is stronger and harder. It is best for structural parts that carry heavy loads, such as machine frames and car bumpers.
Weldability
- 6063-T5 welds easily. It joins well at lower temperatures, which helps with making railings and frames.
- 6063-T6 is harder to weld. Its high hardness means it needs more care during welding.
Price
- The price difference between T5 and T6 is usually small. Both use the same extrusion process.
- In the U.S., 6063-T5 often costs more because builders prefer it for its workability and finish.
6063-T5 is easier to shape and weld. 6063-T6 is stronger and better for heavy-duty work. Price depends more on demand and finish than on the specific type. Choose the one that matches your project needs.
Performance Comparison Table: 6063-T5 vs 6063-T6
| performances | 6063-T5 | 6063-T6 |
|---|---|---|
| tensile strength（MPa） | 160 | 205 |
| yield strength（MPa） | 110 | 180 |
| hardness | 8.5（about 65HB） | 11.5（about 75HB） |
| elongation（%） | 8 | 8 |
Final Thoughts
6063-T5 and 6063-T6 have different heat treatments, strengths, and uses. Choose 6063-T5 if you need easy shaping and welding. Choose 6063-T6 if you need higher strength.
Hugh Aluminum manufactures aluminum extrusions in China. We offer extrusion, powder coating, anodizing, CNC machining, and polishing. We have 15 years of experience and supply 6063 and 6061 aluminum at factory prices.
Contact us if you need help choosing the right aluminum for your project. We will help you find the best option quickly and clearly.
