Forum Discussion
valhalla360
Aug 21, 2021Navigator
jimh425 wrote:valhalla360 wrote:
Aluminum is malleable but not ductile.
Steel is both malleable and ductile.
Of course, “aluminum” wheels are usually alloys of different metals and some are cast and some are not.
Steel can also vary.
Both can vary in hardness and construction method and amount of impurities.
Steel by definition is an alloy. Pure iron is not steel.
Aluminum also is always an alloy.
While there is some variability in how ductile or malleable they are, as a rule, they follow a pattern, so a crack doesn't imply an alloy or production method. Most likely it was how the force was applied.
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