A disc spring made of carbon tool steel SK5, but rusts in a moist environment…

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keyword: SK5; carbontoolsteel; springsrust

Question Spring Newbie 2017/9/6(Wed) 9:43

If a disc spring is made of carbon tool steel SK5, is it likely to rust in a humid environment?

Answer Tokai Spring 2017/9/6(Wed) 9:49

SK5 (SK85) is easy to rust when used with normal iron products.
With disc springs, there is a risk that the contact part will peel off even if the coating is applied and the rust will come from there, so I think that it is necessary to use a lubricant such as a grease too to prevent the rust.

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