General

Mubea disc springs are capable of withstanding severe loads and very high stress levels. Therefore, suitable measures must be taken to protect the disc spring surfaces from damage through chemical or electrochemical corrosion. There are a variety of corrosion-prevention processes available.

Table 5.5 lists some of the corrosion resistant surface coatings and processes available as well as their relative corrosion resistance when subjected to a salt spray test per the requirements of DIN 50 021.

The values for the coating thickness listed for galvanising and nickel-plating are examples of the protection values attainable. It is also possible in some cases to use a greater coating thickness. In the case of mechanical galvanisingand chemical nickel-plating It is possible to obtain a coating thickness up to 50 µm.

For disc springs stacked in parallel, there may be problems with the coatings especially on the lateral surfaces of the spring where there is relative motion between the springs. In such cases Mubea should be consulte.

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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