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Tube burn out

 
Posts: 33
Location: South coast MA, Zone 6b
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If I use a thick carbon steel tube for my burn tube and riser, will they eventually breakdown/melt?

I would uses a perlite mix as the surrounding insulation. Would I eventually have to rely on that as my riser?

From what I have read to both questions is “yes”. Right?
 
pollinator
Posts: 2409
Location: Massachusetts, Zone:6/7, AHS:4, Rainfall:48in even Soil:SandyLoam pH6 Flat
151
forest garden solar
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The temperate in the burn chamber get up to 3,000F.
So anything that has a melting point lower than that will burnout sooner or later.
Then there is also oxidation/rust, from the water/air/organic moleclues/high temperature involved.
So sooner or later it will need to be refurbished.

However if we know that it will last 10yrs+ then we can just replace it in the summer (or when we have extra money) before it fails and we really need it in the winter.
 
Posts: 100
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the kindling temp for mild steel is 1600F; just a scoche under glowing red. Mild steel will start to oxidize around there. you could go with a thick wall like 3/4 inch
 
Gerry Power
Posts: 33
Location: South coast MA, Zone 6b
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I was looking at 1/2" carbon steel. I think carbon steel has a melt point around 2500F.

Once the tubing goes is the perlite mix going to suffice?
 
S Bengi
pollinator
Posts: 2409
Location: Massachusetts, Zone:6/7, AHS:4, Rainfall:48in even Soil:SandyLoam pH6 Flat
151
forest garden solar
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Its worth a try
 
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