I very nice neighboor of mine let me tank her husbands old tank off her hands. The manafacturing date was April 1973 by Alcan, and sold as a US Diver's tank. I thought it might have been made from a forbidden alloy given its age. Upon further inspection I found that it says SP6498 on the collar, doing a little research I found that the 6498 is a type of alloy, not the dreaded 6531 alloy which many shop refuse to fill.
Upon seeing a few threads about tank material I saw that some said the 6498 alloy was good, and some saying it was flagged as hazardess by the DOT. So which is it, I still need to get it VIP'ed and Hydro tested of course, and get ride of this damn J-valve.
Here is whats written on the tank collar.
Line 1: 3AL
Line 2: DOT-SP6498-3000
Line 3: P13210 USD 4(Alcan symbol)73
Upon seeing a few threads about tank material I saw that some said the 6498 alloy was good, and some saying it was flagged as hazardess by the DOT. So which is it, I still need to get it VIP'ed and Hydro tested of course, and get ride of this damn J-valve.
Here is whats written on the tank collar.
Line 1: 3AL
Line 2: DOT-SP6498-3000
Line 3: P13210 USD 4(Alcan symbol)73
Or, depending on how much aluminum goes for per pound, perhaps the local metal disposal place could take it off your hands.
