OK, Time is up

how is the oxide formed without altering the chemical composition of the steel oh great one LOL it matters not if it is a millimeter or a micrometer the change occures and that is a fact LOL call it the catalyst whatever you might want to but heat added to steel causes a change in the chemical composition of the steel (I never mentioned under what conditions did I nor how deep that change was LOL) but you and your mentor decided it coudnt happen well it can and does happen LOL

You just cant take been wrong like your mentor )
Well lets see compared to melting point of steel then yes it is or is that too much for your poor brain to absorb LOL

Dull cherry red aprox 700 to 750c now compare that to the melting point oh great one LOL depends on the alloy of steel it can start to melt at at around 1425c with Stainless Steel at 1510c so yep I would say that was a relativly low temp for it's properties to change
The strength of structural steel begins to deteriorate at temperatures around or above above 425 C

So yeh steel is weakend even at relativly low temps care to try and disprove that?

 

1.) I never once said that oxidation was not a chemical reaction. What I did say was that it was not "caused by the heat" and that heat does not "alter the basic Chemical composition of steel". Even assuming the the heat does create "a thin flaky oxide coating on the surface", that thin layer is not the "basic chemistry of steel".

2.) Again you say "heat added to steel causes a change in the chemical composition of the steel", but I did mention specific conditions where no change occurred, LOL. Therefore, it cannot be the heat that causes the change, can it.

3.) I guess you agree with me that "nice cherry red" is not "a relativly[sic] low temprature[sic]". BTW, you added those last paragraphs while I was typing this.

 

Ah so it forms out of nothing does it LOL it forms from the steel and in doing so is no longer steel hence a change in the chemical properties has occured or do you think it is done by magic LOL
And no I dont agree with you as I said above assuming you even took the time to read it LOL this is fun

 

And the price of tea in China is........ I don't have a clue what you are talking about!

 

Told you that some time ago didnt I LOL

 

OK well that has been fun perhaps one of you two clever guy's can now give us the chemical formula for steel

 

There is not one formula for "steel" any more than there is a formula for dirt.

 

Lol

 

Don't think I have ever seen a moderator troll the very forum they are supposed to be moderating before. But considering that you are a top clown candidate, it is not surprising.

And yes you can get rust without changing the composition of the steel. What do you think happens? You think the oxidation process spits the carbon back into the metal and only takes the iron! Since you refuse to answer my question about the coin, let me give you another example. Take a swimming pool with fully disolved chlorinated water and take a bucket full of water out of the pool. Now, has the chemical composition of the pool water changed? The answer is no it has not, only the volume of water has changed. The remaining water has the same chemical composition as it did before the bucket full of water was taken away. Oxidation of metal works the same way. The mass of the metal is reduced slightly but the underlying metal is still the same composition as it was before it oxidized.

Your final paragraph actually proves my point about annealing and supports the official version of what happened on 9/11. However, I feel compelled to point out that fracture toughness of steel actually increases with temperature so saying that hot steel is more likely to break than cold steel is factually incorrect. But thanks again for proving you know virtually nothing about metallurgy. In other words, you lose, troll!

 

Fe3C

 

Most commonly, but what about high carbon steel, low carbon steel, stainless, etc.?

 

The formation of the oxide reduces the mass of the metal, it does not change the chemical composition of the metal. And btw, steel corrodes at room temperature so stop claiming that heat causes corrosion.

Again, you have just proved my point about annealing which is the stated reason for the collapse of the WTC towers. And while the full annealing temperature is 50 degrees above the austenitic temperature for the alloy (usually >750C), the recovery phase occurs before you reach that temperature. This heat treatment called process annealing improves ductility slightly by removing dislocations and internal stresses within the crystal lattice. However, the strength is not severely impacted until the austenitic temperature is eclipsed and recrystallization and grain growth occur. The purpose of process annealing is usually to prevent cracking during machining.

Pretty soon, I am going to charge you tuition.

 

Alloyed steels containing Cr, Mo, Mn, Ni, Si, V and others are not listed with a chemical formula. Typically they are listed by the composition percentage of each element.

 

Now you want to complain about my moding of this forum ok so be it you are now on official warning one more personal insult to me or any other member and you can take a holliday is that strict enough for you?

 

What happened to the "I win" talk? Look who is getting upset now!

Furthermore, when did I insult you in this thread?

 

I think we struck a nerve.

 

Not you RC but I took the name calling from Lehigh and when I responded in kind I am accused of not doing my job right on the forum, perhaps he might like to check out some of his previouse posts were he came out with the I WIN quote and the name calling
Yep I simply copied him and he cant take it
Even in this thread you check his posts you will find he began the name calling Try looking at post #19 and the sarcasm even sooner Sure I took the prevarbial out of him and his I am better than everyone else attitude and yep it was fun
Most mods would have banned him a long time ago for personal attacks upon themselfs but I have taken it. well I have now got sick and tired of it, he wants to call that a hissy fit so what LOL
He now complains that I took his comments seriously well tough LOL perhaps he should try behaving in a reasonably civalised manner rather than lashing out every time any one disagrees with him.
The bigest laugh is that he did not even realise that I was agreeing with his assesment of the twin towers event LOL

 

I did. He didn't. BTW, I am willing to bet he did "realise[sic]".

 

First, I never accused you of not doing your unpaid job. I simply made the observation that I had never seen a mod intentionally troll their own forum. I have news for you, I am a self professed troll on this forum with an avatar that is begging to get banned. You are a moderator. Part of being a moderator involves being above the juvenile behavior exhibited by the forum members, especially the trolls. Personally, I don't care how you moderate the forum. Even in this most recent post, your smug attitude about successfully needling me shines through. Yet you were the one who got upset when I needled you about your moderation. If you are going to engage in that type of activity, perhaps you should go buy some thicker skin.

Furthermore, our entire argument in this thread had absolutely nothing to do with what you believed happened to the WTC towers on 9/11. I asked Tom a question "how do you chemically alter steel" and you decided to answer with incorrect information for pages. All I did was correct you every step of the way. Re-read the entire thread and decide for yourself who was uncivilized and lashing out.

BTW, what is the chemical composition of that Morgan Dollar again?

 

Are you best buddies with anybody except Davey, or do you just enjoy pairing with such distinguished individuals?