How hard should a washer for a spring house be?

[Verkstad]

Hi

I am looking at a tool spring from special spring with very high compression force 20000 N diameter 32 length 50. I have got a advice from a reseller that i should have a hard washer so the spring do not dig in to the material. The spring only have a stroke length on 5 mm.

How hard should the washer be? Any suitable materials?

Kindly

Paul

 

[TugboatEng]

With steel on steel wear surfaces you'll typically want the hardness of the two surfaces to be the same.

 

[EdStainless]

Yes, at least as hard as the spring.
Which is usually very hard.
And thick enough to assure no distortion even at full compression of the spring.

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P.E. Metallurgy, consulting work welcomed