Aluminum/magnesium Alloys Options

[Bill Duke]

Hello...First time posting on this forum. Following, you will find a post from 7/6/08's CD article about WTC 7 and the new NIST report. Since I am not a metalurgist or a chemical engineer of any sort, I yield to anyone on this site who may have an eplanation. The contention is that the 747's body parts are composed of an aluminum/magnesium alloy that under conditions of proper combustion as in the crashes at the WTC, become highly flammable and reach temps of 4000 degrees. Here's the post....any feedback will be greatly appreciated...



Hi ~GDE~. I was an aircraft crash investigaor and worked directly for the SAC IG for five years. Crash investigations are always conducted when the cause of an aircraft crash is “not known”. There were very few pieces of aircraft left to investigate at the crash site of the WTC. Just a few scraps.

In addition, video evidence of exactly how the crashes occurred was readily available and there was no doubt as to the cause of the crashes.

Another person asked about melting steel, as burning jet fuel will not melt steel. That is true\, it will cause stteel to warp or bend out of shape after an hour of fire. What is also true is, aircraft aluminum is a mixture of aluminum and MAGNESIUM and it will burn at temps approaching 4,000 degrees, which is more than hot enough to melt steel beams.

The two aircraft were almost fully loaded with tons of fuel, which exploded on impact and the resulting fires were not accessable to firemen and auto sprinkers on those floors were wiped out by the crashes and they wouldn’t have helped with a fuel and magnesium fire anyway. No firemen ever got onto the floors where the aircraft entered.

There were tons of “smushed”, into a compacted mass of burning aircraft, wedged right up into the buildings central cores. The heat would have been near 4,000 degrees at those locations. That is where the building floors were attached, and the heat went right up the center of the buildings, like giant chimneys.

There are also some other aircraft parts, such as the large landing gear wheels, which are solid magnesium, and once magnesium, or magnesium aluminum alloys are afire, they cannot be put out, except by burying them in sand or smothering with foam. Water on magnesium fires will cause it to explode.

Military aircraft generally have more magnesium than commercial airliners, but there was tons of magnesium in those 767s which struck the two towers. Later mdels ahve less magnesium. A fact which has been ignored in all of the official reports about the 9-11 disaster. It should not have been ignored.

[tnemelckram]

HI Bill Duke and thanks dMole!

Mr. "Aircraft crash investigaor and worked directly for the SAC IG for five years" says that magnesium burns at 4000F.

What is also true is, aircraft aluminum is a mixture of aluminum and MAGNESIUM and it will burn at temps approaching 4,000 degrees, which is more than hot enough to melt steel beams.

. . . . . . . . . .

There were tons of “smushed”, into a compacted mass of burning aircraft, wedged right up into the buildings central cores. The heat would have been near 4,000 degrees at those locations. That is where the building floors were attached, and the heat went right up the center of the buildings, like giant chimneys.

According to dMole's link to the DOE regarding magnesium and its alloys, the burning temp is 2500F:

Flame temperatures of magnesium and magnesium alloys can reach 1,371 degrees C (2,500 degrees F), although flame height above the burning metal is usually less than 300 mm (12 in.).

So the guy is grabbing an extra 1500F right off the top.

In addition, the flame height is only 12 inches. That would seem to limit the updraft effect that he makes much of - "The heat went right up the center of the buildings, like giant chimneys".

Finally you would think that NIST would have seized upon this to bolster their conclusions, but this is not in their report.

[dMz]

Mr. "Aircraft crash investigaor and worked directly for the SAC IG for five years" says that magnesium burns at 4000F.

Thank you TN,

I glossed over those acronymns (I've seen too many in my life). I'll assume this is the USAF Strategic Air Command Inspector General as my first guess.

That's pretty damn "brassy" high-up, DoD "official government" theory if you ask me. (IMG:http://pilotsfor911truth.org/forum/style_emoticons/default/yes1.gif)