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Originally posted by reallynobody
~~> Molten steel !
Building 7 would ofcourse not been hit directly by a full plane but could still have been hit by flying pieces of it, and remember that molten metal got reported as being rare and sporadic.
Two structural steel samples from the WTC site were observed to have unusual erosion patterns. One
sample is believed to be from WTC 7 and the other from either WTC 1 or WTC 2.
8.2.8.1 Observations and Findings
a. The thinning of the steel occurred by high temperature corrosion due to a combination of oxidation
and sulfidation.
b. Heating of the steel into a hot corrosive environment approaching 1,000 °C (1,800 °F) results in the
formation of a eutectic mixture of iron, oxygen, and sulfur that liquefied the steel.
Ordinary structural steel has a melting point of 1,430 degrees C (2,606 degrees F).
Federal Building and Fire Safety Investigation
of the World Trade Center Disaster
Project #3: Analysis of Structural Steel
Interestingly, one witness (Mark Loizeaux, president of Controlled Demolition) reports that the molten metal was found at the "bottoms of the elevator shafts of the main towers, down seven [basement] levels". This is relevant as elevators often contain aluminum to keep the weight down.
Originally posted by grimreaper797
Ok vushta then how the hell do we do it if not by camera? CIf not by picture then what evidence is reliable?
Originally posted by grimreaper797
The point is the color in which the molten metal was. It was a lemon color, indicating a temperature hotter then what the jet fuel fire can reach.
Originally posted by thepresidentsbrain
couple of points - Alumininium is a poor emitter, even when molten it emits only enough light to be barely glowing in the DARK
Originally posted by grimreaper797
to the author:
thats not the point. The point is the color in which the molten metal was. It was a lemon color, indicating a temperature hotter then what the jet fuel fire can reach.
It is true that its not confirmed to be aluminum or steel, but what difference does it make right now? The color determines what area of heat it is at. The color of pictures like This One show the color is created by temperatures of 1000 degrees celsuis.
now check this out:
www.house.gov...
Two structural steel samples from the WTC site were observed to have unusual erosion patterns. One
sample is believed to be from WTC 7 and the other from either WTC 1 or WTC 2.
8.2.8.1 Observations and Findings
a. The thinning of the steel occurred by high temperature corrosion due to a combination of oxidation
and sulfidation.
b. Heating of the steel into a hot corrosive environment approaching 1,000 °C (1,800 °F) results in the
formation of a eutectic mixture of iron, oxygen, and sulfur that liquefied the steel.
www.eh.doe.gov...
Ordinary structural steel has a melting point of 1,430 degrees C (2,606 degrees F).
Interesting. One government page says the WTC structural steel liquifies (melts) at 1800 degrees, yet this government page says it melts at 2,600 degrees. something sounds off doesn't it?
Originally posted by bsbray11
Yep. And to the posting of the definition of eutectic, that has absolutely nothing to do with the glowing. Melting and glowing are two different things, and don't necessarily correlate. Glowing occurs when a material begins emitting its own photons because of extreme heating. You can melt aluminum at 660 C and this won't occur; the aluminum will stay silvery.
Also, there is video of molten metal pouring out of the corner of WTC2 before it collapsed. This is in broad daylight, and guess what color it still was?
An article in the Journal of Metallurgy discussed microstructural changes that resulted in the erosion of a piece of a steel beam collected from 7 WTC:
Rapid deterioration of the steel was a result of heating with oxidation in combination with intergranular melting due to the presence of sulfur. The formation of the eutectic mixture of iron oxide and iron sulfide lowers the temperature at which liquid can form in this steel. This strongly suggests that the temperatures in this region of the steel beam approached ~1000°C by a process similar to making a 'blacksmith's weld' in a hand forge.
Originally posted by grimreaper797
to the author:
thats not the point. The point is the color in which the molten metal was. It was a lemon color, indicating a temperature hotter then what the jet fuel fire can reach. It is true that its not confirmed to be aluminum or steel, but what difference does it make right now?