Phosphate coatings

Zinc phosphate + oiling + waxing

Zinc phosphating and oiling is the standard type of corrosion protection used for disc springs according to DIN 2093 and Mubea's Factory Standards. During phosphating, fine-crystalline structures of metallic phosphate are deposited on the base metal. A more durable corrosion resistant coating is achieved if an additional protective coating like oil or wax is applied.

Due to production limitations, waxing can only be used on springs with an outside diameter of 100 mm and greater. This type of corrosion prevention is suitable for indoor applications and properly weatherproofed outdoor installations.

Manganese phosphate

On request, Mubea can also offer a manganese phosphate coating for disc springs. Manganese phosphate coatings do not offer any corrosion protection. They only serve as a lubricant. A small degree of protection against corrosion can be achieved by oiling prior to transport and storage.

The properties of the materials used by Mubea are listed in the following tables, and can be downloaded here:

» Download material properties tables as a .pdf document

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