Nitrocarburising would work. I was more just curious to the chemistry/physics of trying to case harden a thin part. Materials science is not a strong facet of my expertise.
The washer is 0.010" thick, OD is 0.225". The reason I thought of case hardening is because there is a pin that contacts...
What were to happen if you tried to case harden a thin (0.010") 1018 steel washer? That depth is obviously obtainable with case hardening however a low carbon steel cannot be through hardened. I'm not sure what extra stresses would occur or whether it is doable.
Thank you,
George