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Forums > Advanced Gunsmithing & Engineering > Stainless Steel Rusting
 

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rem_kujawa
    08/28/07
 Reply with quote#1
I have a question I shot my rifle about two weeks ago,cleaned it and then put it away.Well I have a match coming so I got it out and noticed that there was some rust forming on the barrel right after the action.I thought it was no big deal got out the rust and blue remover,well that turned it a dark black color.It took me about two hours of rubing it with steel wool to get the stain off.How can I prevent this do you guys still put a light cloat of oil on the barrel?

Jon
Preacher
    08/28/07
 Reply with quote#2
Your best bet is to always apply a light coat of oil on all exposed metal parts before putting them away, even on so called stainless steel.
S/S will rust, not as quick as Moly but it sure will rust if your not careful.......
TRECustom
    08/28/07
 Reply with quote#3
Rem; don't know if it's what happened, but sweat is very corrosive. It and blood will rust many stainless steels. It's one of the things I hate about shooting in hot weather. I hate to handle my guns or drip on them when I sweat. It really helps to just wipe them good with a wet rag, dry and wipe on a light coating of gun oil.

I think most stainless barrels are made from type 416 stainless, and it is generally pretty corrosion resistant, but not when exposed to sweat, blood, or chlorates,(corrosive priming) and some other electrolytes.

Just a possibility, Tom
steveyrock
    08/28/07
 Reply with quote#4
The only stainless that won't rust is food grade.That aside' Preacher is correct in that stainless does not rust as chrome moly but it will get slight surface rust which is harmless really except in a polished barrel bore.
    08/28/07
 Reply with quote#5
Surgical (medical) grade stainless won't rust either, at least I hope that it won't

I believe that as a rough rule of thumb the more magnetic stainless steel is the more prone it is to corrode.
kells81
    08/28/07
 Reply with quote#6
Wanna see some rusted stainless, Go to cabela's in Ft. Worth, every stainless gun they have on the used gun rack is rusted, weirdest thing I have ever seen. I picked up a Win mod 70 Heavy varmit and was gonna buy it till I noticed the rust on the SS barrel.
rudedog
    08/28/07
 Reply with quote#7
I have notice that stainless steel pipe where i work in calif., left outside for months,does not seem to rust very much at all.This is 304,308,316 stainless.But let it touch some chrome-moly,or some carbon steel,and it will get surface rust all most over night,maybe not that quick, but in a week you"ll see a lot of surface rust.
Rustystud
    08/29/07
 Reply with quote#8
There is a big difference in 300 series stainless and 400 series stainelss.

They are alloyed for different purposes. They machine different also.

Rustystud
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