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A hard question
Q We are looking for a replacement of E52100 spherodized annealed carbonized iron round bars. We flame harden these to 62-65 Rc and they are used as paper slitting and cutting anvils.
These bars are 35 to 55 in. in diameter by means of 75-in. long and 16 in. in diameter through 56-in. long.
Besides the riddle of occasional microcracks in the raw forgings, we want to increase the surface hardness to 80+ Rc if possible, while maintaining the same toughness as the near material. We're considering using 8620 and case hardening it to 60 to 62 Rc then nitride to 80 Rc





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