Brian Morrison wrote:
The Natural Philosopher wrote:

A hydrocarbon fire will not reach the melting point of steel,
Odd that, since a bessemer converter is wholly carbon fuelled, and is
used to melt steel.

And in fact all steel is traditionally made using carbon fuels.


And a lot of extra oxygen, blown through the charge.

which is around1500C. Burning jet fuel will reach about 1100C.
Yeah sure, that's why they use special alloys in the exhaust of jet
engines.reheat gets up to a lot more than you might think. The
temperature is a function of the air blast I suppose, and a tall
building with a nice service area chimney can create quite a blast..

In a jet engine you're worried about loss of strength, maintaining
clearances and service life, it *really* isn't a good idea to allow the
fast spinny bits to lose strength and collide with the stationary bits.

I suppose an oxy acetylene welder isn't a hyrdocarbon fuel fire
either..sure melts steel tho.


Come on TNP, you're surely fishing here....

Not that much.

I've seen pictures of fire damaged steel frame buildings without
protection - typically warehouse or barn fires with flammable material
inside, and they may not have melted, but they sure buckle.


http://warehousenews.co.uk/wp-conten...arehouse-1.jpg

http://www.manchesterfire.gov.uk/our...ford-park.aspx

as a quick google reveals.

Now imagine a few thousand tons on top..