I've watched all of those videos and I can categorically tell you that Jon Cole doesn't know what he is talking about. There is no such thing as "eutectic steel".
The
iron-carbon phase equilibrium diagram has a eutectic at 4.3wt% C and 1147°C but no alloy let alone steel is used at this composition - very brittle. But of course you have no clue about that diagram, you have no clue about metallurgy and you certainly don't understand what a eutectic system is.
So bearing in mind that you didn't know this what do you say to that?
Jon Cole has not subjected his steel that he has done his poor experiments on to any metallurgical analysis. Therefore he has no conclusion yet you continue to trumpet him. It's worthless.
I've linked dozens of times to
the report that explains heavily corroded steel, but you refuse to acknowledge its findings even though it was written by professionals. This says everything about you; you would rather believe someone who is wrong and has no experience over people who are right and have huge experience.
Your complete lack of any qualifications means you don't have the knowledge or ability to assess anything to do with 9/11. You are gullible and easily persuaded.