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What’s the natural appearance of Hardcoat Anodize and can it be dyed? Overall thickness build-up on the surface is about. The Type III anodize coating process forms a thick oxide coating with 1/2 penetration into the substrate and 1/2 build up on the surface. How much does anodizing add to thickness? These added characteristics make hardcoat/PTFE applications popular in the aerospace, firearms, electronics, military, and marine industries. This makes the surface more suitable for aluminum molds as the lubricity translates into superior release characteristics and the coating remains stable at relatively high temperatures as well. A Teflon hardcoat will also lower the coefficient of friction, up to 50% lower than that of hard anodizing, making it more slippery. Type III anodize can be performed using polytetrafluoroethylene (PTFE) based formulas, the best-known brand name being Teflon, and is a very durable anodize solution. 003” thick and sometimes more depending on the specific alloy of aluminum being anodized. 0005” but Type III hardcoat anodize can be up to. Type II anodize results in a thickness of around. Type III is much more abrasive resistant due to the increased density and can have a thicker build-up than type II too. Though the acid and aluminum concentrations are virtually the same, the differences only become apparent when considering the end-use of the anodized aluminum. This is a similar process as compared to Type II anodizing, just the acid bath is much cooler at around 32 degrees Fahrenheit whereas Type II, for example, has an acid bath temperature of about 70 degrees Fahrenheit. Type III Anodizeīasically how the Type III anodizing process works is a uniform oxide layer is formed in a sulfuric bath which penetrates the material ½ into the aluminum and ½ build up on the surface. Type III hardcoat anodize is also non-conductive, can repair a worn aluminum surface, and is non-contaminating which is perfect for medical instruments. Engineered anodizing generally makes the aluminum easier to clean/maintain, improves lubrication, improves flame resistance, and is overall more resistant to peeling and chipping. Type III hard anodize is commonly performed clear or with a black dye finish as this creates the most uniform finish. Since this process provides more durability than other anodizing types and also has a much smoother finish, Type III hardcoat anodizing has become extremely popular in a variety of applications.Īluminum is already a very lightweight and versatile material hard anodizing not only improves aesthetics but furthers the strength and corrosion-resistant properties aluminum already possesses. Sometimes referred to as an “engineering hardcoat,” the Type III hardcoat anodizing process will form an extremely hard, abrasion resistant outside coating on aluminum.
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Provides greater durability with a smoother finish.Contains a very high lubricity and resistance to flame.Extremely resistant to marine and atmospheric corrosion.