6063 Aluminum Alloy Introduction

Introduction to 6063 Aluminum Alloy

6063 aluminum alloy is a versatile material that uses silicon and magnesium as its main alloying elements. This alloy is well-known for its ability to be formed into complex shapes with smooth surfaces, making it ideal for architectural applications such as window frames, door frames, corner pieces, moldings, and other visible components of building interiors and exteriors. It is also widely used in the production of pipes, tubes, and furniture due to its excellent formability and surface finish.

The mechanical properties of 6063 aluminum vary depending on the temper or heat treatment applied. Common tempers include T5, T6, T1, T4, and others. These different states provide varying levels of strength, hardness, and durability, making the alloy suitable for a wide range of applications.

Common Designations: UNS A96063, ISO AlMg0.5Si, Aluminum 6063-T6, AA 6063-T6, 6063-O, 6063-T1, 6063-T4, 6063-T5, 6063-T6, 6063-T52, 6063-T53, 6063-T54, 6063-T55, 6063-T832

Chemical Composition: The primary alloying elements are magnesium (Mg) and silicon (Si). Other elements like iron, copper, manganese, chromium, zinc, titanium, and others are present in trace amounts, but their levels are strictly controlled to maintain the desired properties of the alloy.

Mechanical Properties: 6063 aluminum is a medium-strength alloy that belongs to the AL-Mg-Si system. It offers good workability, weldability, extrudability, and corrosion resistance, which makes it a popular choice for extrusion processes. However, for applications requiring higher strength, alloys like 6061 or 6082 are often preferred.

The mechanical performance of 6063 aluminum largely depends on its heat treatment. For example:

  • T5 state: Cooled from high temperature and then artificially aged.
  • T6 state: Solution heat-treated followed by artificial aging.

Chemical Composition of 6063 Aluminum Alloy

Chemical Composition Limits
Weight% Al Si Fe Cu Mn Mg Cr Zn Ti Other Each Others Total
6063 Balance 0.2–0.6 ≤0.35 ≤0.10 ≤0.10 0.45–0.9 ≤0.10 ≤0.10 ≤0.10 ≤0.05 ≤0.15

Mechanical Properties of 6063 Aluminum Alloy

Material Diameter or wall thickness (") Tensile Strength (ksi) min Yield Strength (ksi) min Elongation % in 2"
Alloy 6063 <0.125 30 25 8
Alloy 6063 0.125 – 1.00 30 25 10

Overall, 6063 aluminum alloy is a highly adaptable and widely used material in construction, architecture, and industrial design due to its favorable combination of strength, formability, and aesthetic qualities. Whether used for structural elements or decorative features, this alloy remains a top choice in many industries worldwide.

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