All this discussion got me curious about the relative strength of copper
vs. black steel pipe. As I suspected, the black pipe is stronger. 1/2"
black schedule 40 is rated at 10,380 psi bursting pressure, while 1/2"
Type L copper (hard) is rated for 4,600 psi bursting pressure.

--
Jedd Haas - Artist - New Orleans, LA
http://www.gallerytungsten.com