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  1. SZ9

    20CrMnTi vs AISI 4320/8620

    Thanks in advance for any help. So, the company I work for uses big gears PD ~20" Face 8" Thick. Material we current use is AISI 4320 / 8620. I started searching for vendors in China and the usual response I get is they want to replace the material with 20CrMnTi. What is the difference? I...

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