Back to Ganoksin | FAQ | Contact

Why not to use carbon steel pipe for a flask


#1

Howdy-

Thanks for the suggestions on how to improve my brass castings.

In addition to being a metalsmith I am also a licensed steamfitter
and plumber (I like to joke that my midlife crisis was to become a
construction worker). Through this other carrier I have sometimes
have access to stainless piping from which I make casting flasks.

My question is this, does anyone know of a reason not to use
carbon steel pipe for a flask. In my situation carbon steel piping is
much easier to get a hold of as stainless isn’t used on every job. If
you Google ASTM A106 carbon steel pipe you can find the specs on it,
if that helps. I haven’t tried it because I really hate going through
the entire casting process and having it fail, even though I have
done that plenty of times.

Looking forward to your responses.
Be well.
Dana


#2

Hi Dana,

No reason not to use it that I can think of. What do you think they
used before stainless got common?

They will rust out on you eventually, but I’ve seen some carbon
steel ones that I knew were at least 50 years old and still going,
so for whatever that’s worth.

Keep them clean and dry, and you’ll like them more.

FWIW,
Brian


#3
My question is this, does anyone know of a reason *not* to use
carbon steel pipe for a flask. 

I’m pretty sure that the dozens of flasks I use for casting are
carbon steel, not stainless, as they all rust to some extent.

I just knock off any loose rust and spalling flakes with a wire
brush before I use them. Haven’t had any problems with them yet, and
some of them are over 20 years old.

Kathy Johnson
Feathered Gems Jewelry
fgemz.com