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If any body knows the Paris Constants 'C' and 'm' for either 20MnMoNi55 or SA508 steel at room temperature and in air environment, please hep me out.
Apparently C and m will vary with composition and microstructure, and impurity levels.If any body knows the Paris Constants 'C' and 'm' for either 20MnMoNi55 or SA508 steel at room temperature and in air environment, please hep me out.