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What is NH35, its now being used on thixomolded magnesium
before powder coating. Also why is it required.
Dave Burrows
- Colorado Springs, CO, USA
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NH35 is a type of chromate conversion coating used for
magnesium die castings. It was developed by Norsk Hydro as a
pretreatment for subsequent painting. It provides for better
adhesion, as well as enhanced corrosion resistance. None of
the chrome-free pretreatments (Alodine 5200, etc.) have been
able to meet the same corrosion performance that NH35
provides.
Toby Padfield
Automotive module supplier - MI, USA
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