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I don't know if those made of different metal. Do you know if they're made out of a different metal?

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  • For the same number of speed (different age by about 20 years) or the same age (different number of speeds)?
    – Chris H
    Apr 11, 2022 at 15:31

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To quote https://road.cc/content/buyers-guide/head-head-shimano-tiagra-v-shimano-105-r7000-210617 on Tiagra 4700 vs. 105 7000:

The Tiagra and 105 cassettes both feature nickel plated steel sprockets although the 105 version has an a spider arm and a lockring made from anodised aluminium and it’s considerably lighter. The biggest difference, though, is that a 105 cassette is 11-speed while a Tiagra one is 10-speed.

So in principle same material and probably similar wear characteristics.

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  • There are also 10-speed 105 cassettes. There may be less in stock now since 105 switched to 11-speed. SRAM could be an alternative as they are fully compatible and fit the same hub.
    – Carel
    Apr 13, 2022 at 7:22

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