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plated brass at high temp

plated brass at high temp

plated brass at high temp

I have an application for a 36000 brass part that is going to be heated to 300°C (572°F).
The part needs a hard coat to protect it from abrasions and also for aesthetics and also has fairly tight tolerances, some dimensions are +/- 0.0005".
I believe hard chrome would survive but may need post machining. What other plating would survive this temperature and how would the appearance change? I have some parts I can heat up to 'suck it and see' but would like to pre-empt the outcome if possible.
Would nickel chrome or even nickel plating survive? How would the appearance change over this temp range?

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