Iron has two different crystal structures at atmospheric pressure: the body centered cubic (bcc) and the face centered cubic (fcc). In the ground state the bbc α-phase is stable, and at the temperature T=1671 F (A3 point), α-Fe transforms into fcc α-Fe, which is stable up to 2537 F K(A4 point).
The Body-Centered Cubic (BCC) unit cell can be imagined as a cube with an atom on each corner, and an atom in the cube’s center. It is one of the most common structures for metals. BCC has 2 atoms per unit cell
The Face-Centered Cubic (FCC) unit cell can be imagined as a cube with an atom on each corner, and an atom on each face. It is one of the most common structures for metals. FCC has 4 atoms per unit cell
This means, that as the jet fuel burns at 1, 517 F, and heat is contained (such as in a building), as the iron/steel beams are heated, they at first expand - due to thermal heating. But, when the temperature of the iron/steel beams exceeds 1,671 F; the iron SHRINKS BY HALF
This PULLS the building down, melting is unnecessary.
What you are missing is the fact that the jet fuel was merely an accelerant. There were thousands of tons of petrochemicals and wood in those buildings in the form of carpet, vinyl, adhesives, furniture, paper, etc. Plenty of stored chemical energy to soften steel to the point where it can no longer bear the thousands of tons on top of it.
Then explain why the Grenfell Tower did not collapse? 24 story tower, fire breaks out on 4th floor, burns for 60 hours....60 HOURS. Let me guess....no jet fuel. Your soften steel argument is BS kiddo.
Iron has two different crystal structures at atmospheric pressure: the body centered cubic (bcc) and the face centered cubic (fcc). In the ground state the bbc α-phase is stable, and at the temperature T=1671 F (A3 point), α-Fe transforms into fcc α-Fe, which is stable up to 2537 F K(A4 point).
The Body-Centered Cubic (BCC) unit cell can be imagined as a cube with an atom on each corner, and an atom in the cube’s center. It is one of the most common structures for metals. BCC has 2 atoms per unit cell
The Face-Centered Cubic (FCC) unit cell can be imagined as a cube with an atom on each corner, and an atom on each face. It is one of the most common structures for metals. FCC has 4 atoms per unit cell
This means, that as the jet fuel burns at 1, 517 F, and heat is contained (such as in a building), as the iron/steel beams are heated, they at first expand - due to thermal heating. But, when the temperature of the iron/steel beams exceeds 1,671 F; the iron SHRINKS BY HALF
This PULLS the building down, melting is unnecessary.
What you are missing is the fact that the jet fuel was merely an accelerant. There were thousands of tons of petrochemicals and wood in those buildings in the form of carpet, vinyl, adhesives, furniture, paper, etc. Plenty of stored chemical energy to soften steel to the point where it can no longer bear the thousands of tons on top of it.
Then explain why the Grenfell Tower did not collapse? 24 story tower, fire breaks out on 4th floor, burns for 60 hours....60 HOURS. Let me guess....no jet fuel. Your soften steel argument is BS kiddo.
Couldn't tell ya. I'm just applying some common sense here.