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    Honestly, chainrings and cranksets (even dirt cheap ones) last a long time, provided you change your chain when worn. I don't think there's really anything that's a real threat to road riders; mountain bikers might bend a ring in a crash but that's luck of the draw anyway. Crank failure (usually closer to the pedal) does happen but its fairly rare.
    – Batman
    Commented Dec 28, 2019 at 13:39
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    "Corrosion resistance" compared to what? Alloys designed to be immersed in salt water for 100 years? Compounds for holding HF? Commented Dec 28, 2019 at 14:49
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    If you are interested in the chainring's longevity, get yourself a steel one. Aluminum alloys do not rust, they oxidize. Stainless steel is also resistant to rust, and "non-stainless" steel, while rusting, will still be mostly fine for a long time. Unless you live near a salty ocean, that is. Commented Dec 28, 2019 at 16:20