new carrier track pins

[Perry Kitson]

A number of years ago I had one of my new pins tested for composition, with the results posted here (can't find the post). I will look through my notes to see if I can find it. One option for worn track is to use 12mm dia. material (.472") to replace the 7/16 dia. (.437") of the original pins, giving new life to old, worn track. As Bruce says, the hole wear into an oval shape, so you would have to make sure that the holes were large enough to accept .035" larger pins. The pins were case hardened to 55-56 RC.(that's 560 to 575 Brinell for you non colonial types).
Just found my post!
This may help. I found some info from when I was researching reproducing track pins. The following is the result from composition testing on the Canadian track pins.

Ni 2.31%
Mn 1.53%
Cr .31%
Fe 95.06%
Perry

[Michael R.]

Prior analysis by Marc v.A. and Stephen D.