Quote:
Originally Posted by Bicycle Bob
Lately, I've been hearing about "high-strength steel" being used to reduce weight. The A-pillar is a frequent subject, as it should be kept slim for better vision. Strength in steel comes at the expense of toughness, and those things are just adequate for an accident, but they are considered impossible to repair. A minor-looking ding from a tree recently totalled a newish car near here.
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Using what as a base Cold Roll 1018? The stuff in cars is as cheap and thin as possible. The pinto became a fireball because they shaved a couple bucks per car.
Double the thickness you possibly double the strength, but quadruple the power required to form it. Ditto for the so called high strength stuff except you start at higher forming power requirements. Whack it a bunch of times and it work hardens into much higher strength properties but becomes brittle and fracture prone