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Posted by BobH on July 18, 2008, 11:46 pm
Please log in for more thread options Ernie Leimkuhler wrote:
>
>> I have some 300 series stainless to weld and was wondering if C25 would
>> be OK to use for the back side purge? I used to have a spare argon
>> cylinder that I put a regulator and flow meter on for back side purge,
>> but that is now a C25 cyclinder.
>>
>> Thanks,
>> BobH
>
> C25 would be very bad.
> The CO2 gas in C25 is not inert.
>
> Nitrogen is a lower cost replacement for Argon, if welding Stainless,
> but not if welding titanium.
Thanks, I was afraid you would say that...
I was hoping that I could squeak by with it as a back side purge, but I
want this to be right.
Regards,
BobH
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> be OK to use for the back side purge? I used to have a spare argon
> cylinder that I put a regulator and flow meter on for back side purge,
> but that is now a C25 cyclinder.
>
> Thanks,
> BobH