scuba_jenny once bubbled...
I switched it out for a used Catalina, keeping the stem I had for $80. I thought I got a good deal since I don't ahve to look for another tank and would never buy new.
I bought brand new Catalina AL 80 for $99.00, at Sport Chalet including the new valve which I think is a better deal.
The following tanks are made from the now banned AL alloy and suspect for rapid stress fractures:
All DOT-3AL tanks manufactured under one of the following exemptions or special permits: 6498, 7042, 8107, 8364, 8422
All composite cylinders manufactured under one of the following exemptions: 7235, 8023, 8115
All Walter Kidde DOT-3AL scuba tanks.
All Cliff Impact DOT-3AL scuba tanks made before July 1990.
All Luxfer 80.8 cu. ft. scuba tanks (S80.8) made before May 1987.
All Luxfer 72 and 100 cu. ft. scuba tanks (S72, S100) made before August 1987.
All Luxfer 80 cu. ft. scuba tanks (S80) made before January 1988.
All Luxfer 50 and 92 cu. ft. scuba tanks (S50, S92) made before April 1988.
All Luxfer 30 and 63 cu. ft scuba tanks (S30, S63) made before May 1988.
All Luxfer 40 cu. ft. scuba tanks (S40) made before June 1988.
All other scuba tanks made in the US before February 1990 (except Catalina).
All scuba tanks not made in the US.
Note Catalina never used the AL alloy in question. I know in some places dive shops refuse to deal with any tanks on the above list. Since they are the ones who get injured if it blows during a fill, I can't say I blame them.