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Message: [QUOTE="silverpsd_06, post: 840153, member: 1011"] The more and more I learn about the new mill we have at work the more I am tempted to make my own connecting rods. The mill itself is capable of holding +/-.0001" of tolerance I have no doubt in the equipment or the ability of the programmer. My question is this, most rods are built with 4130/4340 chromoly steel, what if a guy was to use an abrasion resistant steel such as AR4/500? From what I have found on the properties of the steel 4340 beats out AR400 in ultimate tensile strength by 9000lbs, but in yield strength AR400 has 4340 beat by 20000lbs. Has anyone ever attempted this? I only ask cause the steel is free, the programmer requires payment in beer and running the program is up to me after work. Damn near free set of connecting rods! [/QUOTE]

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