I'll respond to this now line by line, but I'd appreciate it if you did some critical thinking and offered a response to the very long post I made previously addressing your questions as well as this one below. Your response to an argument can't always be to just ignore everything said and post someone else's argument.
For reference here is a compilation of clips of the molten steel.
I'll refer to this incandescence color chart because it gives temps in Fahrenheit:
http://www.smex.net.au/reference/SteelColours02.php
You can also refer to the one on Wikipedia which gives temps in Celsius:
The next piece of evidence they point to is the color, which is a bright yellow at the center.
If you look at the incandescence color chart you'll find that bright yellow corresponds to temperatures over 2000 F.
Right where the molten metal exits the building and before air has had a chance to cool and form a skin around it, it is almost white hot which indicates temperatures over 2300 F. We also see a white flash whenever the molten metal splatters the side of the building. This is because the air-cooled outer skin is smashed exposing the hotter inner liquid. I took a screen shot at 6 seconds on this video:
This is evidence of metal temperatures in excess of 2300 F.
Metal temperatures over 1700 F would be impossible without incendiaries. As I stated above, the absolute max air temp for office fires is 1800 F as stated by NIST. Average air temps in the flames would have been 800 F to 1500 F depending upon availability of fuel and oxygen. The color of flames indicates temperature and we see cherry red/orange flames. Actual metal temperatures would be lower than air temperatures for reasons given in my previous post.
They say aluminum is silver when melted. While this is true, at higher temperatures it can be yellow.
Sure. But the key here is "at higher temperatures" ...impossibly high temperatures above the maximum possible air/flame temp of the office fires.
As I stated above, Aluminum in the 1200 F to 1700 F temperature range will appear silver in broad daylight due to its low emissivity and high reflectivity.
The fact that we see the cooler droplets emitting bright orange and red colors is an indication that we are not looking at aluminum because there is not enough light emitted at those temperatures from aluminum to be seen in broad daylight.
Note the color of the substance as it cools and solidifies toward the end of its journey. Molten steel would turn almost black. One thing it's not, and that's black.
This looks like a mixture of yellow, orange, and red to me. As I said above, Aluminum wouldn't emit enough light in the orange and red temp range to be seen in broad daylight.
What's telling about this photo isn't that it's proof of the substance being aluminum, It's that it's a zoom and crop of the photo from Jones own paper. (Time for him to change yet another one of his photos.) Below is a screenshot from National Geographic's "Inside 911".
There's no reason for him to insinuate that Jones tampers with the evidence. It is not clear why he makes this insinuation.
The droplets on the outside of the center of the fall seem to be the color of aluminum siding to me.. As I said, the evidence points to it being aluminum.
The smaller drops are at the limits of the resolution of this image yet they still seem to be emitting light. I provided higher resolution shots above showing temps in excess of 2300 F after having fallen through the air several hundred feet. Again, at the top of the fall we see white/yellow indicating impossibly high temps. We also see as it cools some orange/red which are not seen in Aluminum in broad daylight.
First, I will address the temperature range, then the color of the flow...Metals lose about 50% of their strength at 60% of their melting temperature. ...If the approximate melting temperature of steel is 2750 F the the material would be plastic at 1650 F. Even assuming a safety factor of 3, you would expect the bolts or other structural members to deform and fail near this temperature, especially with the additional weight if a jet air liner. I would assume that the live load calculations did not include the typical office equipment and an airliner plus a factor of 3. THEREFORE I assume that the flow is not steel and that the temperature of the steel members at the time of the photo is less than 1650 F.
First of all, his assumption that metal temps did not exceeded 1650 F is contradicted by the bright yellow/white colors as discussed above.
Secondly, he assumes the office fires are the only possible heat source and precludes any possibility of incendiaries. Yes, if the office fires were hot enough to melt steel, collapse would have occurred before any steel could have melted, but no one is saying that office fires melted the steel. Yet we see temps in excess of 2300 F. We see plenty of other evidence for molten steel. Therefore, there had to be a different localized source of extreme heat. The simplest explanation is that incendiaries (thermite) melted the steel at key locations and generated molten iron as a byproduct of the reaction. Shortly after this was observed the collapse began.
He starts with his conclusion and works backwards ignoring evidence along the way. This is apologetics and not science.
Assuming that the flow would be molten aluminum from the airliner and the color of molten aluminum is silver then why is the flow orange? The color of pure molten aluminum is silver, It has an emissivity of .12. Steel has an emissivity of .4 and appears orange in the temperature range of molten aluminum. The emissivity of aluminum oxide is .44 and also appears orange in the melting temperature range of molten aluminum.
Aluminum oxide forms an extremely thin layer (about 4 nm thick) on exposed Aluminum. Aluminum being poured does not glow.
The emissivity of plate glass is .937 It begins to soften at 1000 F and flows around 1350 F. Silica has an emissivity of .8
We see a very large amount of molten metal pouring from a concentrated area. Did someone remove all the glass windows and pile them up on the fire? No... the windows would have either shattered or melted in place. They wouldn't have magically gathered together and run out one corner.
Copper oxide also has an emissivity of .8. however I will assume that their effect is negligible.
Good assumption. Copper doesn't melt until over 2000 F and you'd have to explain where the large amount of copper came from.
Aluminum oxidizes readily in the foundry under ideal melting conditions. Large surface area relative to thickness, turbulence, the presence of water or oil greatly increases the oxidation of aluminum. A jet airliner is made of thin aluminum sheet and most probably suffered considerable oxidation especially in contact with an open flame and being in contact with jet fuel. If you don't believe this, try melting a few soda cans over coals or open flame. If you are lucky you will end up with only 50% aluminum oxide. However, the cans may completely burn up.
Aluminum oxide slag floats to the top and doesn't mix with the molten aluminum so that when the aluminum is poured it still looks silver. For example:
The specific gravity of aluminum is 2.7. The specific gravity of aluminum oxide (Al2O3-3H2O) is 2.42 the specific gravity of Si = 2.40 and Glass is 2.65 these are all very similar and likely to be entrained in a molten aluminum flow. Don't believe it? lightly stir the dross into molten aluminum. The surface tension is so high is is almost impossible to separate them.
See picture above. The Aluminum oxide clearly floats and doesn't mix.
THEREFORE assuming that the flow consist of molten aluminum and considerable oxides, and assuming that the windows in the trade center were plate glass and also in a plastic state and that they were also likely entrained in the molten aluminum.
A very bad assumption as explained above.
I would expect the flow to appear to be orange in color. Especially since both the entrained materials have emissivities equal to or more than twice that of iron.
Once again we see the range from white to yellow to orange to red. The white/yellow indicates temps that are too high for the official fire explanation. The orange/red indicates the droplets were not aluminum. There is no evidence that these materials could become "entrained" in a flow of aluminum and cause the droplets to glow.
Also since dross cools to a gray color and glass with impurities also turns dark. I would expect that the flow would darken upon cooling.
We don't see the flow turn dark. It remains glowing all the way down. It cools from white hot to orange/red over several hundred feet of descent through the air... but this is just the outside of the droplets. As shown above, when the droplets impact the side of the towers they reveal 2300 F + degree temperatures inside.
Summary: The flow is not steel because the structural steel would fail well below the melting temperature.
Again he is starting with his conclusion and ignoring all contradictory evidence INCLUDING all the molten steel and evidence of melted/eroded beams found in the rubble.