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To Powder Coat or Not To Powder Coat?
Nearly any metal part or object can be powder coated. However, in order for parts
to be powder coated, they must be able to withstand the curing temperatures of approximately
350-450F for 15-30 minutes. Because of this, parts such as cylinder heads, that
are made out of plastic substrates or other materials that might warp cannot be
powder coated unless low cure powders are used. Unfortunately, many paint shops
are not skilled in this application. In addition, the parts must be able to also endure the powder coating's additional
thickness, as they are thicker and heavier than liquid paint. Parts such as cylinders
and cylinder heads should not be powder coated. These parts are designed to dissipate
heat by powder coating these parts it can inhibit their performance. Other items such as aluminum wheel spindles, wheel billets, scuba tanks, etc. should
not be powder coated either unless they are powder coated using cooler curing powders.
The reason is that the higher temperatures required to cure standard powder coatings
can causes the ductile aluminum to become brittle.
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