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Cylinder End Bushing
Posted by Brett from Randolph, MN, US on March 19, 2009
I need to make replacement bushings for my customers cyl. rod. He gave me a worn out one for a sample. I had it analyzed and was told it has: C - 1.10, Mn - 13.0, Si - 0.55, P - 0.030, S - 0.010.
None of my regular suppliers seem to know what grade of material this is.
Can you help me?
Brett
The following answer was supplied by David Havel, Chief Metallurgist at Columbia Steel:
The material in question is a grade of Hadfields Manganese Steel. ASTM classifies this material as A128 grade A or grade B-2, both would provide for the measured chemistry. This type of material is used for bushings due to its anti-friction and work hardening properties. Columbia Steel makes bushings in this alloy as well as a few other suppliers. Most bushings of this material are castings, but a few suppliers sell forged bushings in this type of material.