steel vs alloy chain rings

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cyberknight

As long as I breathe, I attack.
Aside from weight, its for the winter commuter so an extra few grams is not an issue on something clocking 18 kg or so loaded.
The chainring on my subway looks toast and as the crankset is 175 mm and i prefer 170s i have seen steel triples , tourney spec cheap enough .
What is the durability like ?
To be ridden in winter conditions
https://www.ebay.co.uk/itm/Shimano-...hash=item36284b6c5e:m:mhLCw-nWWKNNYgfrK49CbhQ
 
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