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Specifications

6063 is an aluminium alloy, with magnesium and silicon as the alloying elements. The standard controlling its composition is maintained by The Aluminum Association. It has generally good mechanical properties and is heat treatable and weldable. It is similar to the British aluminium alloy HE9.

6063 is mostly used in extruded shapes for architecture, particularly window frames, door frames, roofs, and sign frames. It is typically produced with very smooth surfaces fit for anodizing.

Chemical composition

The alloy composition of 6063 is: 

• Silicon minimum 0.2%, maximum 0.6% by weight
• Iron no minimum, maximum 0.35%
• Copper no minimum, maximum 0.10%
• Manganese no minimum, maximum 0.10%
• Magnesium minimum 0.45%, maximum 0.9%
• Chromium no minimum, maximum 0.10%
• Zinc no minimum, maximum 0.10%
• Titanium no minimum, maximum 0.10%
• Other elements no more than 0.05% each, 0.15% total
• Remainder Aluminium

Material: AL 6005,6061, 6063 

National standard: GB 5237 (referenced with EN 12020)

Chemical composition: GB/T 3190(EN 573-3)

Tolerance on dimensions and form: YS/T 436 (EN 12020-2)

Mechanical properties:GB/T 228-2002(EN 755-2)

Tensile test: EN 10-002-1

Surface finish: EN 12020-1 2001

Hardness testing: EN ISO 6506-1