• Author: Jerome Fourmann
• Author's Company: Rio Tinto Aluminum
• Title: Defects Affecting Extrusion – Streaking Visible after Anodizing
• Volume: Vol. 74, No. 3
• Year: 2016
• No. Pages: 2.5
• Description: The 13th article in a series focused on extrusion defects addresses streaking visible after anodizing, which is often present on clear or color anodized extrusions of 6xxx series alloys. Unlike extrusion process streaks that were covered in the April 2016 "Defects" article (such as die lines, micro die lines, and streaks related to dies), anodized streaking is often related to variations in texture related to metalflow in the profile or die that are revealed after etching. Descriptions of the characteristics, appearance, causes, and possible remedies are provided.
Product Code: DEFK0JO181