• Welcome to ScubaBoard


  1. Welcome to ScubaBoard, the world's largest scuba diving community. Registration is not required to read the forums, but we encourage you to join. Joining has its benefits and enables you to participate in the discussions.

    Benefits of registering include

    • Ability to post and comment on topics and discussions.
    • A Free photo gallery to share your dive photos with the world.
    • You can make this box go away

    Joining is quick and easy. Login or Register now by clicking on the button

Is my cylinder made from the "bad" alloy aka AL6351?

Discussion in 'Tanks, Valves and Bands' started by Scared Silly, Aug 7, 2010.

  1. guruboy

    guruboy Divemaster ScubaBoard Supporter

    4,543
    708
    113
  2. Sawdust82

    Sawdust82 Angel Fish

    # of Dives: 0 - 24
    Location: Valley, N.S. Canada
    18
    2
    3
    So if the first hydro date on a cylinder is 1990 or later, youre good to go? Im looking at some used gear and have been wondering about the old alloy and how to avoid those tanks...
     
  3. Peter69_56

    Peter69_56 Divemaster

    # of Dives: 500 - 999
    Location: Warragul Australia
    1,505
    597
    113
    I found the easiest way was to buy new ones rather than old ones. And where possible i am going to steel. Resolves all the arguments and the resale value is much higher too.
     
    Sawdust82 likes this.
  4. guruboy

    guruboy Divemaster ScubaBoard Supporter

    4,543
    708
    113
    If it is a Luxfer tank, then 1990 is a safe cutoff date. Catalina never used 6351 alloy.

    However, I would also check the following-

    1) Any local dive shop limitations
    2) Any hydro test facility limitations
    3) Any dive park fill station limitations
     
    Sawdust82 likes this.
  5. DENFSEA

    DENFSEA Angel Fish

    # of Dives: I just don't log dives
    Location: mich
    30
    5
    8
    see attach
     

    Attached Files:

    Sawdust82 likes this.

Share This Page