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PVDF (kynar) coating on sand cast aluminum

Can I give 10 years warranty on the PVDF coating three coats system ( primer-top coat-clear coat) if it is applied on sand cast aluminum of alloy LM6 . The paint supplier will warranty the paint if it was sprayed on extruded aluminum profiles of alloy 6013 but he said that he does not have any idea about LM6.

Riad Welly
- Dubai, UAE
2006

2nd Request --

Sand cast aluminum of LM6 alloy did not pass 48 hours machew test, the film started peeling of all the exposed edges but it showed very good result in the fully coated areas,now the question is can we give warranty on the coated area on the condition that the warranty will be void if the substrate is scratched or exposed?

Riad Welly
- Dubai, UAE
2006

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