Creative Speculation

No the key word is temperature less than 1000C, thus no melted steel. The key to intergranular melting is the eutectic, which you might not understand, it is chemical engineering. Did you take chemical engineering. If you understand eutectic, you would know there was no melted steel. But most 911 truth followers see "melting", ignore the 1000C and less temperatures, and they are convinced the lie of melted steel made up by failed experts in 911 truth is the truth. Failing to check or gain understanding of chemical engineering, they fall for the fantasy due to lack of knowledge, lack of comprehension of what the paper means.

Again you have essentially debunked the lie of melted steel, but you failed to the woo side, and repeat melted steel lie, having no idea you read the rebuttal, and are quote mining a source which debunks melted steel as you declare victory with "intergranular melting" due to a new material formed in fires 1000C and below, forming a eutectic which melts below 1000C. You really did debunk 911 truth's melted steel, but you don't know it, and unknowingly due to lack of understanding of what you read, remain stuck with what is now a delusional fantasy based on your own failure to comprehend the paper.

You will need a chemical engineer to explain this to you, or a layperson with comprehension skills. The paper you quote-mine clearly debunks melted steel if you understood eutectic. You don't understand what eutectic is. I cheated, in college I took Chemical Engineering 101 as an elective for my engineering degree. My college roommate was/is a Chemical Engineer. It is too easy for me to see 911 truth is spreading lies of melted steel, and they use the same quote mining technique you used. Just find the term melted, or molten and repeat the quote mine.

Better go tell 60 Minutes you got the proof - a paper you don't understand debunks your claim of melted steel.

Why can't you find a photo of the solid melted river of steel? Where are you photos?

The key is corrosion, 911 truth fails to understand corroded steel, and calls it melted, and people fall for the lie.
https://www.metabunk.org/threads/fema-appendix-c.3803/ You proved you are wrong with the term "intergranular melting", and don't know it, and will not seek help from a real expert. I have a masters in engineering, what did the expert who lied to you in the video have? A masters in woo, or BS Artistry.