1 Topic by EriktheAwful (edited by EriktheAwful 2010-11-18 12:28 PM)

  • From: Choctaw, Oklahoma
  • Registered: 2009-11-12
  • Posts: 2,145

Topic: How much heat will DOM take?

First, let me say this is not really car-related, other than I'm using some leftover scraps of rollcage tubing.

I'm working on building a rocket-stove for my shed and for the insulated chimney I thought I'd weld together a couple of short scraps of DOM I have left over. The temperature at the top of the chimney will probably reach 2000 degrees. How long will a piece of 1.75x.120 DOM last in this application? I know RX-7 headers are a thinner wall mild steel and regularly reach 1800 degrees, but they rust out relatively quickly. Any metallurgists out there who can give me an idea of lifespan in this use?

http://www.iwilltry.org/b/build-a-rocke … e-heating/

2 Reply by DaveH (edited by DaveH 2010-11-18 06:33 AM)

  • DaveH
  • DaveH
  • Ripened Lemon
  • Offline
  • From: Delaware
  • Registered: 2009-05-11
  • Posts: 264

Re: How much heat will DOM take?

This should give you some idea of the heat tolerance of carbon steel:

http://www.youtube.com/watch?v=m27rdKUZjS4

From a metallurgy standpoint, on a turbine, you don't let the inlet temperature get over 1450 F.  But those are thin blades under load.  For a chimney, 2000 F is probably not too much of a problem.

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