The article contains sections titled: 1. Introduction 2. Metallurgy of Aluminum Alloys 2.1. Composition 2.2. Solidification and Cast Structure 2.2.1. Grain Size and Dendrite Arm Spacing 2.2.2. Segregation 2.2.3. Porosity 2.2.4. Nonmetallic Inclusions 2.3. Thermal and Mechanical Processes 2.3.1. Preheating 2.3.2. Non‐Heat‐Treatable Alloy Processes 2.3.3. Heat‐Treatable Alloy Processes 3. Production Methods for Aluminum Alloys 3.1. Melting and Metal Treatment 3.1.1. Impurities in the Molten Metal 3.1.2. Alloying 3.1.3. Recycling and Skim Treatment 3.1.4. Molten Metal Treatment 3.2. Casting Processes for Ingot 3.3. Shaped Casting 3.3.1. Die Casting 3.3.2. Permanent Mold Casting 3.3.3. Sand Casting 3.4. Mill Products 3.4.1. Plate, Sheet, and Foil 3.4.2. Extrusions 3.4.3. Forgings 3.4.4. Other Mill Products 3.5. Powder and Paste 4. Commercial Alloys, Products, and Uses 4.1. Aluminum Association Designations for Alloys and Tempers 4.2. Alloys for Castings 4.3. Alloys for Wrought Products 4.4. Comparison of Designation Systems 4.5. Alloys for Powder Metallurgy Products 5. Manufacture of Articles from Aluminum Products 5.1. Shaping 5.2. Joining 5.2.1. Mechanical Joining 5.2.2. Metallurgical Joining 5.2.3. Adhesive Bonding 5.3. Cleaning and Finishing 5.3.1. Mechanical Cleaning and Finishing 5.3.2. Chemical Cleaning and Finishing 5.3.3. Chemical Etching 5.3.4. Chemical and Electrolytic Brightening 5.3.5. Chemical Conversion Coating 5.3.6. Anodizing 5.3.7. Metal Coatings 5.3.8. Paints and Organic Films 5.3.9. Porcelain Enamels 6. Corrosion Resistance of Aluminum 6.1. Pitting Corrosion 6.2. Electrode Potentials 6.3. Crevice Corrosion 6.4. Intergranular Corrosion and Stress‐Corrosion Cracking 6.5. Exfoliation Corrosion 6.6. Ratings for Resistance to Corrosion 6.7. Corrosion Prevention 7. Major Markets

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