Sorry i had to ask here in regards to a previous question (9-11 conspiracy)...?

Melting points.


Cast iron—iron alloyed with greater than 1.7% carbon—melts at around 1370 °C


Steel often melts at around 1370 degrees C (2500°F).


(for those that will say "its not cast iron, its steel" or visa versa)





Jet Fuel - Open air burning temperatures: 260–315 °C (500–599 °F)


Maximum burning temperature: 980 °C (1796 °F)





Jet fuel doesnt even burn hot enough to melt steel.





so if that is the case how can you say that jets caused the steel to melt...?





how come u guys in here make stupid claims and never even do any research to back them up?

Sorry i had to ask here in regards to a previous question (9-11 conspiracy)...?
It's done quite often here.
Reply:Like a parade, everyone loves a conspiracy.
Reply:Why is this in the Religion section?
Reply:Steel loses structural integrity when it get hot. It doesn't need to melt, or even be near melting temperature to fail. Just heating it up will cause it to lose tensile strength.





Now I will ask, how come u guys in here make stupid claims and never do any research to back them up?





Why do you think they put fire retardant on steel if no fire could ever melt it? And the initial impact was more then enough to knock off the fire retardant.
Reply:It didn't melt but temper and weaken.





The strength modulus will change under heat.





You also have other things being ignited, like plastics which are oil (petroleum) based.





Oxidized steels can cut rail roads tracks or burn through the hood and engine block when place on a vehicle.





EDIT: Listen to aviator





Edit2x: Maybe Thermodynamics or Metallurgy next semester instead of Conspiracy 101
Reply:one combustible ignites another and another - it was a chain reaction --





but your original profering doesn't hold either - or a fire in a jet engine wouldn't be dangerous to an aircraft [made of steel components]





it was not merely the burning of aircraft fuel - it was an explosion of jetfuel which sparked other fires -- i suggest you look at the damaging effects of an explosion upon all substances - including steel %26amp; cast iron...
Reply:Every one of these claims ignores all of the research done by those how actually do know what they are doing. Probably no one here on yahoo answers knows the science so what we say here is just lame guessing and based on wrong assumptions. No one said the steel had to melt for the building to fall. there is no way it could have gone that far. just a simple weakening of the steel would be all that is required.





we dont make claims, we just repeat the research done by those who know.








your updates to your question shows how little you understand. glass itself has a very high melting point but yet it gets weaker and weaker as you heat it up. in fact, even at room temperature it is already weak enough to flow. so much that over about 100 years, you can see squiggles in the glass. so your statement about x and y and the melting point a irrelevant. it is an absolutely false claim to say that if the melting point is not met, then complete solidness continues.





hmmm, plastic seams to get weaker too when heated, even way before melting point. wow, bush's secret army must be in my kitchen controlling my plastic knives too.
Reply:I'm with you on that!





I think 9/11 was a conspiracy too as well as the war on IRAQ.
Reply:The steel frames of the buildings didn't melt. They collapsed because their structural strength was compromised by being heated. They were carrying several tons of weight.





Steel loses 50% of its strength at 1100°F
Reply:for one, there's no need to call people stupid for their beliefs and two, i dont think this belongs in the religion section....





there's no need to be rude...
Reply:Could it be that the heat simply weakened the metal enough to cause a collapse. Sounds pretty plausible.
Reply:Now that you've given us the melting point, can you also be so kind as to provide the temperature at which steel begins to weaken? because that's what happened. Nobody says the steel melted, causing the collapse (Just like nobody says we came from monkeys. But anyway...). The crash and explosion destroyed the fireproofing, the fires then weakened the steel supports, which caused the upper floors to collapse onto the lower floors, bringing the buildings down.
Reply:They are in denial. Some people are content with believing the lies of the government.





The truth is not for everybody.
Reply:looks like mr bush didn't plan this too good.