The Simple Truth believes Aluminum can't cut through steel - has this been scientifically proven ?

Yes its been proven.
No aluminum armor piercing ammunition, EVER
No aluminum saw blades. EVER

If they could have, they would have.

World Trade Center Office Tower piercing projectiles though...exist.

Simple Truth guy, aka Matt Marriot, has shit for brains.

Well what do you mean by cut?

Lead is very soft, but when launched at a high enough velocity, it can go through steel. You could never "cut" that steel with lead though.

just google for an example...

No.
2" think tempered steel box beams are impervious to 10mm of T6 aluminum even at 400 mph..
It's not even close.
Light metal simply shatters to dust upon impact with tempered steel and that's the facts.

hm

Not so.
lead liquifies upon contact and does no cutting at firearm speeds.
What cuts metal in bullets which are hyperspeed compared to aircraft speeds is the harder metal jackets.

Dont forget the size of the beams and thwere encased in several inches of concrete..

And there is no way around this ?

I think this has merit, people! As so long as it's an aluminum knife or blade sharpened and is used to cut into a sheet of steel... that's a nano layer thick. lol Of course aluminum doesn't have the strength to do much else. The best thing aluminum can do is hold my soft drink of my choice!

So in effect it's dust in a ball of kerosine fire

Maybe it was "bad Steel" inside the Building?

Al is very powerful, just use a Can if Coke, put her in to a Bag
and you have a very powerful Weapon!

(which Movie? Sean Penn?)

Pretty sure I could fire a normal lead ball .45acp round through a steel car door.

Of course, there are many factors at play, the car door is obviously very thin.

there is kinda, but it requires mass and hypervelocity in ranges of perhaps 5 to 10 miles per second, not something as slow as an aircraft.
Mass and velocity can compensate somewhat for weakness of crystal structure. That's why shaped charges work the way they do.
You are never going to cut down a larger thicker steel pole with an aluminum bat under normal velocity ranges.

Dunno...that's the equivalent of the plane being filled with concrete

I wonder what happened to the Pentagon then

that's not cutting, thats overwhelming the distributed mass of a thin sheet of steel with the concentrated mass of lead.
If you watch it in slow motion, the metal is stretched until it fails while the lead bullet melts at the friction interface.

If you think because you can punch through toilet paper you can punch through a pine log, please, can I watch?

I have no idea, since the engines had the strongest metal of the aircraft in them, the fact that there were no engine impacts evident on the bldg walls the only logical assumption is that they disappeared into the 8th dimension by time/space warp and not seen again, probably like the black boxes that were never found either, though apparently passports survived.

if you can cut steel with water, i have no doubts it can be done with aluminum.

I never said it cut it, I said it went through. Which it would. You said lead would liquify and the metal jacket punches through, now you say the concentrated mass of the lead overwhelms the steel. Your semantics don't have a point to this part of the submission.

A softer material can break through a harder material given the right conditions, fact. I don't think that was the case with the WTC, mind you.

Can some of you people please just read this and try to comprehend it...??

I have a masters degree in mechanical engineering, specifically materials science and heat transfer.

When you have any material of a specific mass, travelling at a specific velocity and then impacting another material, you have to conserve several quantities:

Energy

Momentum

At 500mph, a 160 ton object (a plane) has tremendous amounts of kinetic energy.

When the plane impacts the steel building, the force from this impact only affects the local areas of the columns which were impacted.

The force put onto these columns is MUCH more than enough to cause them to buckle, and it doesn't depend on what material is impacting...

The plane could have been made out of potatoes, or plastic, and the force put onto the structure would still be very large.

Of course the plane was shredded upon impact, as it was like cheese hitting a cheese grater at 100mph lol....

But the momentum and kinetic energy would easily cause the handful of columns to fail.

You can read reports of tornados, about how a 2x4 was thrown at 200mph and went through a steel door, or concrete...

Or watch the videos on youtube of people launching pumpkins at 300mph through steel plates....

Anybody who thinks there were 'no planes' because 'aluminum can't break steel' would seriously be laughed at by any person who successfully passed 8th grade physics.....

Where did i imply that there were no planes involved

What none of you know is that the two engines running at many thousands of RPM around a thick long superstrong metal axis SHOULD HAVE EACH, INDIVIDUALLY DRILLED THROUGH THE BLDGS WALLS MUCH MORE EFFECTIVELY THAN THE THIN METAL BALLOON THAT WAS THE AIRFRAME AND WINGS, YET THERE WAS NO MARK.
The turbine shafts were spin stabilized, gyroscopically stable and the ONLY things that could have penetrated all those walls, yet, nothing.
In effect the spinning rotors were spin stabilized armor piercing rounds exactly like those APFSDS penetraters fired by the Abrams tanks

You dont cut metal with water, you put abrasive in the water, that's what cuts, the water is the medium its in.

Do you know anything the whole way through or are you always half assed?

The only quantities which matter when determining if those columns would fail would be their thickness and cross sectional area, the carbon content, and the length of the column.

Then you could calculate the failure load, of a force put on the center of the column (for simplicity of calculation).

The columns would fail, but upon failing would also utilize a lot of the kinetic energy of the plane.

Another example would be if you took a steel bar, and an aluminum bar and hit them together very very hard.

Both would be affected, but the damage would be proportional to each materials coefficient of elasticity and the overall bulk strength.

But just because a material isn't as strong as another, doesn't mean the stronger material will not be affected by kinetic energy or forces put onto it....

Any force put onto any material gives an internal stress, if this stress exceeds the plastic limit of the material, then it will fail....

Steel is good at structures, because it can absorb a lot of energy and flex elastically before it deforms permanently (plastically).

The only thing that would make sense i believe is that the planes were full of explosives

I think they use water mixed with an abrasive to cut steel. I don't think they cut it with water alone.

Aluminium is a really soft material.

and yet despite every theoretical advantage, nobody makes aluminum bullets.

Why not try to explain moduli, like shear or elasticity, etc?