Evap-o-rust on chrome tools

[x madmax diesel]

Picked up a nice old set of mac swivel sockets for 20 bucks! Wonder if evaporust is safe to use on them? They came from an outboard marine mechanic in Florida. Salt has got to them on the black swivel joint and the inside of the socket jaws


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[x madmax diesel]

I a good amount off with a kerosine parts washer


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[Mustang1167]

I've used evaporust on chrome sockets before. It didn't harm the chrome that was in good condition and left an "unfinished or flat" metal finish where the chrome was rusted. The black swivel joint I could see turning a flat black color. You should be good. Evaporust is slow working and is not very caustic as far as corrosive materials go.

 

[x madmax diesel]

I've used evaporust on chrome sockets before. It didn't harm the chrome that was in good condition and left an "unfinished or flat" metal finish where the chrome was rusted. The black swivel joint I could see turning a flat black color. You should be good. Evaporust is slow working and is not very caustic as far as corrosive materials go.

Thank you

 

[bwringer]

Agreed -- I've used Evaporust on some chromed motorcycle shock springs and headlight buckets, and it did a great job. The chrome that was solid was not affected at all, and the rust spots were gone.

That said, chrome that's gone rusty is compromised and will rust again eventually if it's exposed.

In your case, keep the sockets clean and wiped down with WD-40 or whatever, and they'll remain in fine shape for many years.

 

[montanafordman]

I have used evaporust on chrome wrenches, and sometimes the chrome will flake (and it was specks not large flakes) where the rust comes out, but thats good because the area is compromised anyway then you can get some WD40 or oil on the clean metal to keep it from rusting again. If there was any roughness on the chrome I scrub it good with a brass brush and/or sythnetic steel wool/ sos pads and it smooths out nicely.

 

[losvre]

Can you read the ingredients from evaporust can? There are certain chemicals that attack Chromium and Nickel, but normally when the exposure is long term.

What gives the stainless properties to the alloy is a passive oxide on top of the chrome layer. That film protects the inner mayerial however oxidation attack never really stops and after many years the chrome is depleted by trying to stop corrosion. Depending on the chemistry and percentage of Chromium, corrosion protection will last a certain amount of time.

Also note that the inside of the sockets might not be chromed and so the corrosion comes from within.



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[jakemac]

I use CLR on chrome. It works the same as EvapoRust, but it's a little gentler on chromed surfaces.

 

[Hootbro]

I have mixed results with Evaporust and Chrome tools. More than once it has gotten under the visible rust and jacked the chrome off the item leaving sharped edges of chrome slivers. Obviously it was rusted under the chrome in question but I feel it would have not come off with jagged edges under normal use.

 

[Empty Pockets]

i've never used CLR on chrome.... gonna have to try it

 

[d.mcfarland]

CLR is similar. I personally would just use some WD-40 and a brass brush first. Start simple and move towards the most drastic resolution.

 

[losvre]

I wouldn't use any brush because by doing so you "break" the corrosion resistant layer that chrome builds.

Normally if you want to activate the corrosion resistance you need to use some acid solution on the surface and then alkali to neutralize and flush with fresh cold water for the passivation.

That is the alloy is properly established at first point. Look up. peeling and passivasion of stainless steel.

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