Alloy 6063, one of the most popular alloys in the 6000 series, provides good extrudability and a high quality surface finish. In the heat-treated condition, alloy 6063 provides good resistance to general corrosion, including resistance to stress corrosion cracking. It is easily welded or brazed by various commercial methods (caution: direct contact by dissimilar metals can cause galvanic corrosion). Since 6063 is a heat-treatable alloy, strength in its -T6 condition can be reduced in the weld region. Selection of an appropriate filler alloy will depend on the desired weld characteristics. Consult the Material Safety Data Sheet (MSDS) for proper safety and handling precautions when using alloy 6063. Alloy 6063 offers excellent response for anodizing in its -T5, -T52 , -T53 (“matte finish”), -T54, -T6 (“lustrous” finish) tempers. The most common methods are clear, clear and color dying, and bright dipping and hard coat. Bright dipping provides an economical alternative to mechanical polished finishes while offering improved surface durability.