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Re: EvapoRust on anodizing?
[Re: burdar]
#2191479
11/07/16 02:44 PM
11/07/16 02:44 PM
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Joined: Jan 2003
Posts: 27,471 So Cal
autoxcuda
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,471
So Cal
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That trim on a dart should be stainless that the door panel goes into. Every 68 dart I've seen so far has been stainless.
I have seen them rust stained from the door steel. Ive always got it to buff off on the buffing wheel.
Last edited by autoxcuda; 11/07/16 04:28 PM.
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Re: EvapoRust on anodizing?
[Re: Stanton]
#2193711
11/10/16 03:41 AM
11/10/16 03:41 AM
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Joined: Jan 2003
Posts: 27,471 So Cal
autoxcuda
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,471
So Cal
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Stainless shouldn't rust like that ... that's why its called "stainless". My guess is its chromed steel. Check with a magnet, stainless isn't magnetic.
If its chrome then you want to avoid hitting the surface that shows with steel wool - use a good metal polish. Stainless can be magnetic. The stainless front window moldings on muscle years A/B/C body's are magnetic and all stainless. Due to metal composition and/or the working/forming of it. http://www.bssa.org.uk/faq.php?id=24Is stainless steel non-magnetic?
It is commonly stated that “stainless steel is non-magnetic”. This is not strictly true and the real situation is rather more complicated. The degree of magnetic response or magnetic permeability is derived from the microstructure of the steel. A totally non-magnetic material has a relative magnetic permeability of 1. Austenitic structures are totally non-magnetic and so a 100% austenitic stainless steel would have a permeability of 1. In practice this is not achieved. There is always a small amount of ferrite and/or martensite in the steel and so permeability values are always above 1. Typical values for standard austenitic stainless steels can be in the order of 1.05 – 1.1. See Composition effects on the magnetic permeability of austenitic stainless steels
It is possible for the magnetic permeability of austenitic steels to be changed during processing. For example, cold work and welding are liable to increase the amount of martensite and ferrite respectively in the steel. A familiar example is in a stainless steel sink where the flat drainer has little magnetic response whereas the pressed bowl has a higher response due to the formation of martensite particularly in the corners.
In practical terms, austenitic stainless steels are used for “non-magnetic” applications, for example magnetic resonance imaging (MRI). In these cases, it is often necessary to agree a maximum magnetic permeability between customer and supplier. It can be as low as 1.004.
Martensitic, ferritic, duplex and precipitation hardening steels are magnetic.
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Re: EvapoRust on anodizing?
[Re: burdar]
#2193833
11/10/16 11:49 AM
11/10/16 11:49 AM
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Joined: Oct 2006
Posts: 7,371 Iowa
burdar
OP
Owen's Dad
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OP
Owen's Dad
Joined: Oct 2006
Posts: 7,371
Iowa
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Stainless can be magnetic. The stainless front window moldings on muscle years A/B/C body's are magnetic and all stainless. Due to metal composition and/or the working/forming of it.
The moldings around the convertible top and the belt moldings are also magnetic. I read on the EvapoRust website that it's safe for stainless so I should be good to go. I'll get a section of 2" PVC and a cap so I can soak them. The car sat outside with the top down for a few years. The door panels must have stayed damp for a long time to cause that.
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