finished for now!!!
- Thread starter tbcmorris
- Start date
IJ.;1201141 said:
That's exactly what I was thinking. It's not the temperature that it melts at that matters...
...once the molecules spread out, it loses most of the strength.
P.S. I absolutely love your car. What are the offsets on the wheels, by the way? I'm looking into purchasing new wheels soon and like the fitment of them.
alloyguitar;1204660 said:
Have to laugh at the guys that "should" know better saying "yeah it'll be fine blah blah blah"
As I said before it's just a personal preference based on what I know of metallurgy.
IJ.;1204681 said:Have to laugh at the guys that "should" know better saying "yeah it'll be fine blah blah blah"
As I said before it's just a personal preference based on what I know of metallurgy.
Yeah, I'm no expert at it. I mean, I took a metal working class when I was in middle school, and do a lot of welding/fabrication (exhausts and such), but as far as something like a frame is concerned, just knowing that it could be damaged would worry me...
...I'm weird like that.
In my opinion, unless the fire burned for a sustained period of time, the frame is fine, especially if no warping of the steel occurred. Plus, the typical locations a fire will impinge the car body are not strengthening members anyhow.
The kinetics of steel annealing are such that it takes several hours at 700C+ temperatures to fully anneal a cold worked steel. Unless there is a thick iron oxide scale on the steel, formed by prolonged exposure to high temperatures (i.e. no sign of burned paint), it is unlikely that it is has been significantly damaged.
It also has nothing to do with "molecules spreading out". (puts on science hat) The initial loss of strength of fire damaged steel is associated with the recovery of dislocations, spherodization of the cementite phase, and the segregation of alloying elements. As any of the higher-strength steel panels are likely low carbon microalloyed steel, the loss of strength begins to be dominated by the movement and segregation of the alloying elements (not the cementite spherodization), which, if I remember correctly, is not a rapid process by any means.
The kinetics of steel annealing are such that it takes several hours at 700C+ temperatures to fully anneal a cold worked steel. Unless there is a thick iron oxide scale on the steel, formed by prolonged exposure to high temperatures (i.e. no sign of burned paint), it is unlikely that it is has been significantly damaged.
It also has nothing to do with "molecules spreading out". (puts on science hat) The initial loss of strength of fire damaged steel is associated with the recovery of dislocations, spherodization of the cementite phase, and the segregation of alloying elements. As any of the higher-strength steel panels are likely low carbon microalloyed steel, the loss of strength begins to be dominated by the movement and segregation of the alloying elements (not the cementite spherodization), which, if I remember correctly, is not a rapid process by any means.
I know the science and still wouldn't reuse a burnt shell
(not quite to the degree of Adam's post but I suspect a cutNpaste from a text book)
(not quite to the degree of Adam's post but I suspect a cutNpaste from a text book)