•The 5xxx Series alloys are high purity aluminum with magnesium added. Alloys of this series are work-hardened (non-heat-treatable) and have good formability. Alloys 5252, 5457, and 5657 are low in iron and have good luster for chemically brightened finishes. These alloys are used largely in automotive and appliance trim applications. Alloy 5052, while higher in iron, chrome, and magnesium, is a high-strength alloy and is used in structural applications such as truck panels. Alloy 5005 is higher in iron and silicon than 5052. It is a good general-purpose architectural sheet and plate alloy. Alloy 5052 anodizes yellowish in thicker coatings, while 5005 anodizes clear silver, gray, or brownish.