TYPE III INDUSTRIAL HARDCOAT ANODIZING Hardcoat anodizing forms a thick (.001" to .003") aluminum oxide coating. This layer becomes an integral part of the metal. For example, a .002" coating will add .001" above the surface and will penetrate .001" into the metal, resulting in an extremely hard inert coating that significantly enhances the hardness and durability of aluminum.
The precise application of the Hardcoat process provides a uniform surface, even to complex parts, while significantly improving the properties of aluminum.
- Corrosion Resistance …passes 1000 HR 5% salt spray test
- Electrical Insulation …equivalent to glass or porcelain
- Prevents Galvanic Reaction …can be used with steel, copper, brass, etc.
- Hardness …C60-C70 Rockwell
- High Operating Temperatures …up to 500°C
- Durability …10 times greater than unanodized Aluminum
- Excellent Lubricity …Hardcoated parts may run against each other without lubrication in many applications.
- Conductivity …Voltage breakdown of 2000 to 3000 Volts/mil
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Maximum Type III Thickness Per Alloy
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Alloy
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Max. thickness
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Typical Color
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2024
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2.0 mil
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Olive/Grey
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5052
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2.5 mil
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Dark Grey
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6061
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2.5 mil
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Dark Grey
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6063
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3.0 mil
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Olive/Grey
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6005
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2.5 mil
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Olive/Grey
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7075
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2.0 mil
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Olive/Grey
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