Both 6061 and 6063 are standard used aluminum alloy for extruded profiles. These two kinds of aluminum alloys belong to the Al-Mg-Si system but have different main alloy elements, and the content of Mg, Si, and Cr of 6061 is higher than that of 6063. They are shown below.
| ALUMINIUM ALLOY | Si | Fe | Cu | Mn | Mg | Cr | Zn | Ti | Zr | Others | AL | |
| 6063 | 0.2-0.6 | 0.35 | 0.1 | 0.1 | 0.45-0.9 | 0.1 | 0.10 | 0.10 | —— | each | total | |
| 0.05 | 0.15 | REST | ||||||||||
| ALUMINIUM ALLOY | Si | Fe | Cu | Mn | Mg | Cr | Zn | Ti | Zr | Others | AL | |
| 6061 | 0.4-0.8 | 0.7 | 0.15-0.4 | 0.15 | 0.8-1.2 | 0.04-0.35 | 0.2 | 0.15 | —— | each | total | |
| 0.05 | 0.15 | REST | ||||||||||
The main alloy elements of 6063 aluminum alloy are magnesium and silicon. Desirable processing properties, excellent weldability, extrudability and electroplating, good corrosion resistance, and toughness. It is easy to polish, has an upper coating, and has a unique anodizing effect. It is a typically extruded alloy. 6063 is a very comprehensive aluminum alloy material with high strength, wear resistance, corrosion resistance, and high-temperature resistance. It can be used in both architectural and industrial profiles. Commonly used in the construction of aluminum alloy doors and windows, curtain walls, various industrial frame structures, rail transit, aerospace, military equipment, automated conveyor equipment, and other fields.
6061 is a high-quality aluminum alloy material with high toughness, good weldability, and corrosion resistance. 6061 requires industrial structural parts with specific strength, weldability, and high corrosion resistance. It can be used in trucks, ships, aerospace installations, trucks, trams, molds, electronics, furniture, corrosion-resistant structures.
The 6061-grade aluminum profile performs better than 6063 in strength and machinability and also has excellent oxidation resistance. However, in terms of plasticity, the 6063 aluminum profile is superior, it can make the material achieve higher precision; 6063 has higher tensile strength and yield strength, showing better fracture toughness.
Mechanical properties are as follows. From the performance point of view, the mechanical properties of 6061 are slightly better.
| Aluminium Alloy & Temper | Thickness
mm |
Tensile Strength Rm/Mpa |
Yield Strength Rp0.2/Mpa |
Elongation /%
A |
HBW |
| 6063-T5 | ≤3.00 | 175 | 130 | – | 65 |
| >3.00-25.00 | 160 | 110 | 7 | 65 | |
| 6063-T6 | ≤10.00 | 215 | 170 | – | 75 |
| >10.00-25.00 | 195 | 160 | 8 | 75 |
| Aluminium Alloy & Temper | Thickness
mm |
Tensile Strength Rm/Mpa |
Yield Strength Rp0.2/Mpa |
Elongation /%
A |
HBW |
| 6061-T6 | ≤5.00 | 260 | 240 | – | 95 |
| >5.00-25.00 | 260 | 240 | 10 | 95 |
FONNOV ALUMINIUM provides users with quality extruded aluminum profiles for both building construction and general industry. Contact us at [email protected]