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zinc chromate vs zinc phosphate primer??????

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planecrazydld(at)yahoo.co
Guest

Posted: Sun Jun 03, 2007 12:47 pm Post subject: zinc chromate vs zinc phosphate primer??????

Please advise me on this: any know the hard differentiating factors that would drive someone to choose one or the other? In the old days ZCP was the only way to go. Now I keep hearing about the ZPP - and it is cheaper...



Thanks.

  Dave Downey

  Harleysville (SE) PA

  Zodiac 601XL/Corvair?

   [quote][b]

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jimandmandy(at)yahoo.com
Guest

Posted: Tue Jun 05, 2007 7:05 am Post subject: zinc chromate vs zinc phosphate primer??????

--- David Downey <planecrazydld(at)yahoo.com> wrote:



 	  Quote: 	
		   Please advise me on this: any know the hard

 differentiating factors that would drive someone to

 choose one or the other? In the old days ZCP was the

 only way to go. Now I keep hearing about the ZPP -

 and it is cheaper...

 

 Thanks.

 

 

   Dave Downey

   Harleysville (SE) PA

   Zodiac 601XL/Corvair?

 

 

  

 ---------------------------------


	




I hope this does not become a debate like red or green

Scotchbrite. Simply stated, there is no effective

substitute for hexavalent chromium for corrosion

protection of aircraft aluminum alloys. It is even

"self healing" if scratched. Phosphates may be better

for iron and steel. Having said that, 6061 is much

more corrosion resistant itself than the more commonly

used 2000-series alloys.



The main downside to zinc-chromate is that it is

toxic, both spray mist and sanding dust. Cost is

almost identical at the suppliers I use, Aircraft

spruce and a local marine supply store. 



Also, green is just yellow with a little carbon black

added. The reason for that is that back in the 1930's,

the Army wanted something eaisier on the eyes for

exposed surfaces inside the aircraft. Yellow is

generally used under paint. Green works just as well.

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planecrazydld(at)yahoo.co
Guest

Posted: Tue Jun 05, 2007 12:34 pm Post subject: zinc chromate vs zinc phosphate primer??????

thanks to everyone who has input on this.

   

  do not archive



Jimbo <jimandmandy(at)yahoo.com> wrote:

  [quote]--> Zenith-List message posted by: Jimbo 

--- David Downey wrote:



 	  Quote: 	
		   Please advise me on this: any know the hard

 differentiating factors that would drive someone to

 choose one or the other? In the old days ZCP was the

 only way to go. Now I keep hearing about the ZPP -

 and it is cheaper...

 

 Thanks.

 

 

 Dave Downey

 Harleysville (SE) PA

 Zodiac 601XL/Corvair?

 

 

 

 ---------------------------------


	




I hope this does not become a debate like red or green

Scotchbrite. Simply stated, there is no effective

substitute for       Ready for the edge of your seat?  [url=http://us.rd.yahoo.com/evt=48220/*http://tv.yahoo.com/]Check out tonight's top picks[/url] on Yahoo! TV.    [quote][b]

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amyvega2005(at)earthlink.
Guest

Posted: Tue Jun 05, 2007 2:30 pm Post subject: zinc chromate vs zinc phosphate primer??????

check the archives, 



--

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amyvega2005(at)earthlink.
Guest

Posted: Tue Jun 05, 2007 2:39 pm Post subject: zinc chromate vs zinc phosphate primer??????

on the airmap, check pilot amll .com or call the owner Neil direct.  Great customer service, one on one withthe owner and  he is good on pricing.



Pilotmall.com 



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