On Dec 17, 2007 10:42 AM, Bob Nogueira <nogera@worldnet.att.net> wrote:
> I've been using C02 with my MIG as I have only welded steel. My next
> project will be in aluminum so I figure I will need to switch to argon.
> Questions
> Are the fittings for argon and CO2 the same?
> Are the Argon and CO2 bottles the same?
No. If you're using straight CO2, you likely have a bottle that holds
(relatively) low pressure C02 gas, and liquid C02. It'll have a CGA
320 fitting on it. Argon is stored as a high-pressure gas, in a
bottle with with CGA 580 fitting. If you're using a combination of
C02 and Ar, it's in a high pressure bottle with CGA 580 fittings.
Some regulators can be used on both types of equipment, with an
appropriate thread adapter. Your gas supplier can advise you on what
you need to buy.
> My supplier does a bottle exchange for refills, will they generally allow
> you to switch from one type of gas to another on a bottle exchange?
> And, What is the price difference between Argon and C02?
>
Again, your gas supplier can advise. I don't think they'll take a C02
bottle in exchange for an ARgon one, though.
The price difference on the gas is large, but much of what you're
paying for are fixed costs of handling a cylinder, so what they charge
you might not vary as much.
--
David Scheidt
dmscheidt@gmail.com
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