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Alternative to electrogalvanized material

Is there a pre-coated material alternative to electro-galvanized that provides corrosion protection that would not have to run through a second finish operation?

Tom Hendrickson
account manager - Clackamas, Oregon, USA
2007

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I'm not exactly sure what you are considering a second finish, and what the requirements are for the alternative you seek, but certainly it is possible to roll coat the metal with a paint rather than electrogalvanizing it.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
2007

To clarify, we use mild steel that comes to us pre-coated, electrogalvanized. There is a tendency for minor rust on sheared edge. Other than using stainless or aluminum, we wanted to know what other materials would be available with a pre-coating.

Tom Hendrickson
- Clackamas, OR, USA
2007

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First of two simultaneous responses -- 2007

Hi Tom.

If following process are stamping and shearing, you will always remove the protective coat at the sheared edge. Other option would be starting the process with a non coated still and electroplate at the end of the manufacturing process.

Saludos.

Guillermo Castorena G.
Jobshop - San Luis Potosí, México

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Second of two simultaneous responses --

As mentioned, you can get the strip roll coated with paint of just about any color. But the galvanizing is an anodic coating which, even if imperfect, protects the sheared edge to some extent. If you are going to continue to create sheared edges after finishing, there is no substitute for an anodic coating like galvanizing,galvanizing, or aluminizing. Good luck.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
2007