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Steel Tank VS Aluminum

Discussion in 'Basic Scuba Discussions' started by ScubaTodd77, Jul 13, 2009.

  1. ScubaTodd77

    ScubaTodd77 Solo Diver

    # of Dives:
    Location:
    101
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    Pros/Cons of each? I seem to notice more experienced divers with steel so I thought I'd ask. I've never dove with a steel tank, but I was thinking about buying a second tank, and was wondering if I should get another Aluminum or try a steel tank, since they appear to hold more air.
     
  2. diverdown78

    diverdown78 Angel Fish

    # of Dives: 25 - 49
    Location: ohio
    36
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    i have alum 80s...but i prefer steel...i think its personal pref
     
  3. H2Andy

    H2Andy Blue Whale

    # of Dives: 200 - 499
    Location: NE Florida
    29,646
    370
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    well, steel tanks tend to be negatively bouyant at the end of the dive, so you need less weight

    also they tend to be larger than 80cf ...

    also, unlike many AL tanks, they don't tend to push your head down and your feet up towards the end of the dive

    they are heavier, generally speaking; that's a possibly drawback
     
  4. diverdown78

    diverdown78 Angel Fish

    # of Dives: 25 - 49
    Location: ohio
    36
    0
    0
    i have 5lbs staped to my alum 80s..it seems to do yhe trick
     
  5. RMDiver

    RMDiver Solo Diver

    # of Dives: 50 - 99
    Location: Idaho
    80
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    I like steel. You don't end up being "too bouyant" at the end of your dive.
     
  6. ptyx

    ptyx Solo Diver

    # of Dives: 200 - 499
    Location: CA
    527
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    Assuming we're talking about a single tank, and AL80 vs HP100:

    AL80 pros:
    • cheap
    • available everywhere
    • what you'll find for rental, so no need to adjust your gear when you travel
    • flat bottom, so can be used without boot if you object to boots

    AL80 cons:
    • buoyant at the end of the dive, that means you need extra ballast (I'm at 19 with AL80, 12 with HP100)
    • relatively light even at the beginning of the dive, which makes sitting in the water less comfortable with a back inflation BC or BP/W.
    • actually 77cft, a lot less than a HP100
    • doesn't live as long as a steel tank
    • a bit too long physically for the average diver

    HP100 pros:
    • always negative, so you need to carry less ballast (that's a cons if you dive tropical and don't need ballast at all with steel)
    • more air for approximately the same total tank weight
    • HP100 as a lot more gas than a AL80
    • diver weight distribution is balanced further back, which makes sitting in the water more comfortable
    • lasts forever (if cared for appropriately)
    • more compact than an AL80
    • failure modes are supposed to be less dangerous in steel than AL

    HP100 cons:
    • expensive
    • round bottom - get a boot or be prepared to hold to it often
    • not what you'll rent - so you need to be prepared to adjust your gear when you travel

    Tell me if I forgot anything, I'll add it to the list.
     
  7. MaxBottomtime

    MaxBottomtime Solo Diver

    # of Dives:
    Location: Torrance, CA
    5,971
    3,419
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  8. sohnje

    sohnje Dive Con

    # of Dives: 1,000 - 2,499
    Location: NE PA
    126
    74
    28
    Get a steel 100, you will be very happy.
     
  9. imwright1985

    imwright1985 Manta Ray

    # of Dives: 25 - 49
    Location: West Palm Beach, FLorida
    567
    9
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    i would just buy another AL 80, its better to have similar tanks to keep your weighting the same so you dont have to keep messing with it. Only way i would go steel is if i was looking to get more into tech type diving or making a switch to steel and would buy a 2nd steel in the near future and get rid of the al 80 or use it as a spare for when your getting a hydro done, have company, or may be doing 3 dives in a day
     
  10. H2Andy

    H2Andy Blue Whale

    # of Dives: 200 - 499
    Location: NE Florida
    29,646
    370
    0

    that's cool ... that's not a heck of a lot of weight

    i don't use any weight with a steel 108; bouyancy is extremely steady at the end of a dive
     

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