Were mainly talking about rebar steel, not exactly a boutique or specialty grade of steel. And besides, no steel in existence that I know of can withstand 2500-3000 degrees without at least loosing yield strength.
Or just dead weight from cracked concrete and melted asphalt? The steel may not have even melted to get this result. Steel rebar in bridge supports only accounts for part of the strength. Concrete also supports that weight but if it is cracked that support is lost and all weight is placed on rebar.
It's all the same. No matter how much you try to dodge it, the point is that you have two completely different items trying to be compared. So blah blah all you want. You gave bad examples. You didn't take circumstances and reality into consideration. I got your point but the examples were a little off. Next issue...