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  1. Neil00001

    Inhibition of Zn-rich surfaces

    Thanks for your reply, The 7072 is used as an internal clad on 3003/5 radiator tubes.As hard as this is to believe (remember that I too think it's a crap idea) up to 10% of gauge is sacrificed for this clad. It's a japanese principal, that's based on the idea of some idiot filling his rad with...
  2. Neil00001

    Inhibition of Zn-rich surfaces

    I'm currently deep in argument with a colleague over whether it's possible to inhibit a Zinc-rich (7072) aluminium internal clad on a heat exchanger tube with conventional ethylene-glycol coolants. I've always believed this internal clad to be a waste of time, as the frankly crap mechanical...

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