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View Full Version : What the H!!! Corrosion


sspen003
05-23-2011, 5:24 PM
Is this corrosion? I fired my Rifle about 5 months during a 3-gun shoot and because the Holidays were so busy did not clean it. I am getting it ready for a shoot this weekend and I see this this corrosive looking stuff on my bolt. Any info on this would be appreciated. Also all I shoot is wolf out of this rifle, could that be the issue?



http://i639.photobucket.com/albums/uu118/sspen003/IMG-20110523-00001.jpg

dieselpower
05-23-2011, 5:27 PM
white powder on aluminum is corrosion...on a Carpenter 158 Bolt I have no idea what it is... could be mold / moisture from your oil, grease, lube

mlevans66
05-23-2011, 5:29 PM
Killa, that's the T-Cell virus on you bolt. LOL

Merc1138
05-23-2011, 5:50 PM
Scrape it off and look at the metal underneath to see if it was actually corrosion.

sspen003
05-23-2011, 6:10 PM
Everything cleaned up in 2 seconds with some CLP. Could it just be residue from the ammunition that sat too long?

dieselpower
05-23-2011, 6:26 PM
white is not normally associated with corrosion on C158 steel. White is aluminum corrosion.

osis32
05-23-2011, 6:43 PM
It looks like a spider egg sack haha

$P-Ritch$
05-23-2011, 6:54 PM
I don't know exactly what the chemical make up is, but I know that it is normal on that part of the bolt. It's just some sort of caked up carbon that turns a light grey when it dries/heats up or something like that. Like you already did, it will come off with simple gun cleaning solvents and the metal underneath should be unscathed.

pointedstick
05-23-2011, 6:55 PM
Everything cleaned up in 2 seconds with some CLP. Could it just be residue from the ammunition that sat too long?

Yes.

pacifico23
05-23-2011, 6:59 PM
Cleaned up in 2 seconds? Sure it wasn't like a mold or something. People have the wierdest gun problems on here....

chead
05-23-2011, 7:01 PM
Problem -> CLP didn't work -> post.

$P-Ritch$
05-23-2011, 7:02 PM
Problem -> CLP didn't work -> post.

lol, that does seem to be a more proper order.

sspen003
05-23-2011, 7:46 PM
No it was not mold or a SPIDER EGG...

It felt like caked on carbon. I remember finding some some of this in my old A2 birdcage as well.

Knife Edge
05-23-2011, 8:49 PM
Is this corrosion? I fired my Rifle about 5 months during a 3-gun shoot and because the Holidays were so busy did not clean it. I am getting it ready for a shoot this weekend and I see this this corrosive looking stuff on my bolt. Any info on this would be appreciated. Also all I shoot is wolf out of this rifle, could that be the issue?



http://i639.photobucket.com/albums/uu118/sspen003/IMG-20110523-00001.jpg

Since the Holidays! Looks like a spider web :)

dvsdev
05-24-2011, 8:24 AM
It looks like it was blue, then turned white. You can see some of the blue underneath.

dieselpower
05-24-2011, 8:48 AM
Problem -> CLP didn't work -> post.

The problem with CLP, is people do not use the proper CLP. And if they do have the proper CLP its used improperly.

Your CLP needs to be BREAK-FREE CLP, as per Mil-spec. Not Yugeski made in china CLP....not Walmart CLP...

The proper way to use CLP is in a field setting were the carry of the three needed process is hampered by situation.

1) clean
2) preserve
3) Lubricate

If you can not carry a product designed for one of the above, you carry the best product that does all three until you get to a place that has separate products that do. Follow this ArmaLite tech note # 72 (http://www.armalite.com/images/Tech%20Notes%5CTech%20Note%2072%20Cleaners%20Lubes %20Preserv%20%20090603%20Rev%201.pdf) and you shouldnt have an issue.

sspen003
05-24-2011, 8:43 PM
lol, that does seem to be a more proper order.

I knew I could get it off. I just wanted to snap a pic to see if anyone the cause of it

$P-Ritch$
05-24-2011, 9:18 PM
I knew I could get it off. I just wanted to snap a pic to see if anyone the cause of it

It's all good. I have had something similar build up on the same spot of my bolt that turned bluish green. I believe the bulk of it is carbon residue. In my case I believe trace amounts of copper from the jacketing found their way back there as well which would explain the blue-green colors.

In your case I would guess it would be some brass residue or maybe some metal from the primers was mixed in. I have picked up some range brass before that had some white haze on it like that. Just a guess on my part. At least it came off easy.