try and keep up and grasp what is being talked about so you dont look like a doof out here actually its 1983 for copper my bad.
But you did try to inject some BS into the discussion when I stated that it was normal to find metals other than steel melted in a fire of this magnitude.
nope took your statements verbatim. the metals you listed run to the same temps that iron melts not my problem. - - - Updated - - - nope took your statements verbatim. the metals you listed run to the same temps that iron melts not my problem.
Who but you is talking about cast iron or wrought iron? We are concerned with STEEL, which has a melting point about 800F higher than copper. Please try to limit your remarks to the materials that we need to understand in order to assess what a fire scene should look like. In a fire the size of the WTC pile, molten copper is possible, brass is possible aluminum, magnesium and pot metal are givens. In the case of a building with the same sorts of activities housed, lead is an absolute certainty. Molten steel doesn't happen.
yeh but you guys always approach this from a laymans pov. you should be able ot look at the color and tell me the approximate temperature. you claim you are a fire man well tell us how you would do that. Here tell us what the approximate temperature range is for this color; what temperature range would you place that runny stuff at?
Seeing that they are scooping it with a thin metal spoon that is unaffected by the temperature, it's pretty low. Probably glass.
ok, I did not ask what it was, it does not matter, no one gives a (*)(*)(*)(*), I want to know the approximate temperature and no you do not need a thermometer, and no the question was not put to you. but thanks for putting up your incorrect answers anyway.
Thanks for posting that. I was under the impression that some metals would not incandesce until raised to a higher temp. So that could very well be aluminum that we saw pouring out the corner ot the WTC, or it could be copper and lead from the batteries, right? - - - Updated - - - Thanks for posting that. I was under the impression that some metals would not incandesce until raised to a higher temp. So that could very well be aluminum that we saw pouring out the corner ot the WTC, or it could be copper and lead from the batteries, right?
I do not keep those figures in my head. Now what the hell is that stuff and what has it to do with 9/11.
Could very well be lead...it melts at a bit over 620 degrees,but there's no reason it couldn't have been hot enough to incandesce
and you want to pontificate your knowledge about these matters? Look it up and let me know what temperature that stuff is. you should have known that the temperature can be determined by the color substance is irrelevant. I mean you being the expert n all, yet it seems jojo has to teach you all where the bear (*)(*)(*)(*)s in the buckwheat
My knowledge of metal working is limited to some welding, cutting and bending techniques. The only casting I have done is in solder, lead and pot metal. I don't do hammer-forging, so color as a temperature indicator is pretty much irrelevant to most of what I do. I do know that once steel becomes red-hot, its load-bearing capacity is limited.
yeh so what does not mean it will collapse, the models prove that in spades/ will your weld flow when its red? what color flows well, what color drips? yo uweld you should know.
I was not going for certification. Most of what I welded was for my own use. Most of what I was paid for involved cutting some scrap. It is not really relevant. Simple fact is that steel loses about 50% of its strength at 1000F. A Class A fire in flash over far excedes that temperature. Thus, exposure for a sufficient length of time to a Class A fire will cause structural steel to fail. That simple, really.
