"Greg O" wrote in
:

The lower carbon steels all cut and thread poorly. Higher carbon, to a
point, will cut cleaner, too high and it gets hard on tooling. Most
CRS cuts better than HRS. Best yet is leaded steel. The stuff cuts and
threads like butter, compared to plain 1018 HRS. Then again, choice of
material depends on the application.
Greg

Thanks Greg. I wasn't aware that the higher carbon steels would cut
cleaner.

Rob