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Corrosion Resistance

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engiNERD77

Agricultural
Jan 8, 2014
15
I have a hex shaped fixture that is plugged into an adaptor. The fixture is made of 4140 ph. I originally had no coating and became concerned with rusting. The second design had a black oxide coating but is quickly wearing off. Could I get some ideas of the cost difference with maybe a chrome plating and dimensional changes I could expect? Or possibly some other application that would help resist the tendency to rust. Thanks.
 
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