"Ed Huntress" wrote in message
...
snip-------

They did not crack until I had them smashed about dead flat, and then the
cracks started on the surface and did not penetrate. The parent tubing was
beginning to crack at the same stage of smashing. So much for all of the
controversy, as far as I'm concerned.

--
Ed Huntress


I agree----but *only* with 4130. The higher carbon content of 4140 and
greater changes all of that. That was my original point.

Harold