some comments from purchasers and users of
various wood stoves and from people in the
metal and welding industry.
Stainless steel is not corrosion proof but it
is corrosion resistant. In some cases, against
some chemicals, stainless steel is no better
than plain steel. It is also true that some
chemicals can reportedly leach the chrome out of
stainless steel (if there is any - in that grade
Ted Mooney, P.E.
Inc. - Brick, NJ
We own a stainless model and after 5 years
the 10 year warranty was a joke just try to
collect. its a discarded junk heap is it the
stainless I have been welding lots of steel
stoves for pitting but never seen one crack .
- Kenora, Ontario, Canada
nickel stainless expands and contracts
Carbon steel will transfer the heat
better than stainless though.
Hope this helps
Southern Comforts - Dinwiddie, VA, USA
to set the record straight on stainless steel,
it doesn't work in an outdoor use. It
can't account for the rapid temperature changes.
I am only starting to get into the heating
business and I already know that stainless steel
is a nice concept but when you have a cracked
water jacket and there is know way to fix it,
don't come crying to me. Also I love reading
about all these companies with there lifetime
warranties who have only been in the business
for 3-5 years, give me a break. As soon as one
claim comes in they go bankrupt and your on your
own once again. Mild steel is a metal that works
and if you have half a brain to take proper care
and daily maintenance of your furnace it will
last you. Thanks for your time.
Heat Innovations - Winkler, MB, Canada
Definitely go with the mild steel when
you buy an outdoor wood furnace. I've seen both
in use and the mild steel will not have the
corrosion problems that the stainless steel has.
I currently own a (wood furnace) with mild steel
and I can give my testimony that it has worked
perfectly and has needed no maintenance or
upkeep for any type of problems. I don't speak
from a "metallurgy" knowledge, but
from practical experience that has done me well.
- Fort Wayne, IN, United States
I HAVE SEEN MILD STEEL UNITS, SIXTEEN
YEARS OLD. UNDERSTANDING THE PHYSICS OF WHAT
CAUSES CORROSION IN THESE TYPES OF METAL IS KEY.
WATER ABOVE 175 DEGREES DOES NOT HAVE AVAILABLE
OX. FOR CORROSION. MOST OF THESE UNITS RUN AT
180 - 185 DEGREES. 304 STAINLESS IS EXTREMELY
PRONE TO STRESS CORROSION CRACKING - WHICH
RESULTS FROM CHLORIDES IN THE WATER REACTING
WITH THE NICKEL CONTENT OF THE STEEL. THIS IS
NON-REPAIRABLE BY WELDING. 409 STAINLESS WILL
GIVE YOU THE HEAT TRANSFER ABILITIES AND
EXPANSION PROPERTIES OF MILD STEEL, IT IS A
FERRITIC STAINLESS, SO THE SURFACE WILL TARNISH.
THE CORROSION RESISTANCE IS STILL GREATER THAN
MILD STEEL. ... KEEP IT SIMPLE.
- MEMPHIS, MI, USA
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