Physical Properties of 6063 T6 Aluminum Alloy
6063 aluminum alloy is one of the most commonly used materials in construction and manufacturing industries, especially for extrusion-based applications. Supplied by GNEE, a professional aluminum alloy manufacturer, 6063 aluminum is valued for its excellent formability, corrosion resistance, weldability, and heat-treatable characteristics. These balanced properties make it an ideal solution for projects that require complex cross-sectional profiles combined with a high-quality surface finish.
6063 aluminum is particularly well suited for extrusion processes, where the material is forced through a die to create consistent and intricate shapes. This capability makes it indispensable in architectural, decorative, and lightweight structural applications.
6063 Aluminum vs 6061 Aluminum Alloy
Within the 6xxx series, 6063 aluminum is often compared with 6061 aluminum alloy. Although both alloys share similar base elements and performance characteristics, their applications differ.
6061 aluminum provides higher mechanical strength and is commonly selected for load-bearing or high-stress structural components. In contrast, 6063 aluminum offers superior extrudability and surface finish, making it easier to form into complex profiles. Because of this, 6063 aluminum is widely preferred for architectural and decorative uses where appearance, precision, and corrosion resistance are more important than maximum strength.
Chemical Composition of 6063 Aluminum Alloy
The typical chemical composition of 6063 aluminum alloy is
Magnesium (Mg): 0.7%
Silicon (Si): 0.4%
Aluminum (Al): Approximately 98.9% (balance)
Minor variations may occur due to manufacturing tolerances or trace impurities. The combination of magnesium and silicon allows the formation of Mg₂Si during heat treatment, which enhances both strength and heat treatability.
Density and Formability of 6063 Aluminum
The density of 6063 aluminum is approximately 2.7 g/cm³ (0.0975 lb/in³), which is nearly identical to pure aluminum. While its strength is slightly lower than that of 6061 aluminum, 6063 aluminum excels in ease of forming, making it especially valuable for detailed extruded components with tight dimensional requirements.
Corrosion Resistance of 6063 Aluminum Alloy
Like all aluminum alloys, 6063 aluminum naturally forms a protective oxide layer when exposed to air or moisture. Instead of corroding, this oxide film acts as a barrier that prevents further oxidation and protects the underlying metal.
Among 6xxx series alloys, 6063 aluminum demonstrates excellent corrosion resistance, particularly due to its lower copper content compared to 6061 aluminum. Since copper can increase susceptibility to corrosion, 6063 aluminum performs better in aggressive environments. It shows good resistance to substances such as nitric acid, ammonia, ammonium hydroxide, and various soil conditions.
For even greater durability, 6063 aluminum products from GNEE can be anodized, coated, or clad, further enhancing resistance to atmospheric and chemical exposure. This makes the alloy ideal for long-term use in architectural, structural, and marine environments.
Mechanical Properties of 6063 T6 Aluminum
The mechanical performance of 6063 aluminum alloy varies depending on heat treatment. For clarity, the commonly used 6063-T6 temper is referenced below.
Yield Strength of 6063 Aluminum
Yield strength indicates the maximum stress the material can withstand before permanent deformation occurs. 6063-T6 aluminum has a yield strength of approximately 214 MPa (31,000 psi). While this is lower than 6061-T6, it remains sufficient for most architectural and light structural applications.
Ultimate Tensile Strength of 6063 Aluminum
The ultimate tensile strength (UTS) represents the highest stress the alloy can endure before fracture. 6063-T6 aluminum offers a UTS of about 241 MPa (35,000 psi), providing a good balance between strength and workability during extrusion.
Shear Strength of 6063 Aluminum
Shear strength measures resistance to forces acting parallel to the material's surface. The shear strength of 6063-T6 aluminum is approximately 152 MPa (22,000 psi), which supports its suitability for machining, cutting, and forming operations.
Modulus of Elasticity and Shear Modulus of 6063 Aluminum
Modulus of Elasticity: 68.9 GPa (10,000 ksi)
Shear Modulus: 25.8 GPa (3,740 ksi)
These values indicate the stiffness and elastic behavior of 6063 aluminum and are similar to other 6xxx series alloys, including 6061, due to their comparable chemical compositions.
Applications of 6063 Aluminum Alloy
Because of its outstanding extrudability, corrosion resistance, smooth surface finish, and moderate strength, 6063 aluminum is often referred to as "architectural aluminum." Products supplied by GNEE are widely used across multiple industries.
Common Uses of 6063 Aluminum Include:
Piping: Irrigation systems, HVAC ducts, and lightweight fluid transport
Tubing: Handrails, frames, support structures, and transportation components
General Extrusions: Medical equipment, automotive parts, industrial profiles, and custom shapes
Architectural Products: Window frames, door frames, curtain walls, and decorative trims
Building & Construction: Roofing systems, aluminum framing, and reinforcement components
Recreational Equipment: Bicycle frames, sports equipment, and outdoor structures
Furniture: Aluminum chairs, tables, shelving systems, and modular office furniture
Why Choose GNEE 6063 Aluminum?
As a reliable aluminum alloy supplier, GNEE provides high-quality 6063 aluminum products with consistent performance, precise dimensions, and excellent surface quality. Whether for architectural extrusion, decorative design, or lightweight structural applications, GNEE's 6063 aluminum alloy delivers durability, aesthetics, and long-term value.
