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Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ

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Adverse effects of zinc plating on CRS

2003

Hello,

I would like to know if zinc plating could adversely affect the performance or life of ASTM 1144, A108 CRS shafting. I'm concerned about the temperature, heating and cooling rates.

Thank you kindly.

Jiri Krupka
Menova Engineering Inc. - Ottawa, Ontario, Canada

2003

Well, zinc is obviously a different material than steel, so the performance will be different in some ways. The melting point of zinc is lower than steel, so you may have to be concerned about temperature. While zinc plating retards corrosion in most atmospheres, it is of no value in an acidic environment such as in a plating shop. So your questions are hard to answer without full context.

I think the biggest issue is that most shafting is polished and tight tolerance. You would not be able to slide a gear or sprocket or coupling along a zinc plated shaft.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey

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