9mm lugar brass cases turn silver when cleaning.

Discussion in 'Ammunition & Reloading' started by Flash, Jan 10, 2014.

  1. Flash

    Flash
    Vancouver
    Member

    Messages:
    82
    Likes Received:
    44
    9mm lugar brass cases turn silver when cleaning with stainless media in mill. They go in brass color and come out silver colored. Do they use a coating on them. The cases are not alum or steel, magnet has no attraction to them. I have never notice it until lately.:huh:
     
  2. JuryRig

    JuryRig
    Eburg, WA
    New Member

    Messages:
    20
    Likes Received:
    1
    Huh, that's different. If they went in silver and came out brass, I could explain. What is the manufacturer of the brass? Does someone brass coat their aluminum cases now? Are the cleaned cases shiny silver or dull silver?

    What are you adding to the tumbler besides the media and the cases? The only thing I can think of is some sort of electroless nickle or zinc plating. Doesn't seem like that should happen by accident. I would guess that your stainless media has something in it beside stainless steel.
     
  3. Blitzkrieg

    Blitzkrieg
    WA
    Well-Known Member

    Messages:
    9,674
    Likes Received:
    4,861
    Before and after pics would help. Is the case interior also silver?
     
  4. Classic

    Classic
    Federal Way WA
    Well-Known Member

    Messages:
    953
    Likes Received:
    915
    What's the headstamp?
     
  5. Flash

    Flash
    Vancouver
    Member

    Messages:
    82
    Likes Received:
    44
    This was range brass most is Federal 90% and Win. The silver is a dull silver compared to nickel. There were some 40 cal in the bunch and the 9mm that were in the 40 case are still brass colored and if they were half way in the 40 case because of stainless pins filling the case first the 9mm case would be half brass and half silver. kind of tuff to explain. The soap was 2 tb. Ivory dish soap and 1/2 tea Lemishine. The cases are not aluminum too heavy and not steel was thinking that some plating thing going on. Think I will go ahead and prep and re clean and see what happens. This brass was pretty dirty when received. The stainless pins were pre cleaned by the same soap combination and ran in a empty drum for a half hour before using.
    Thanks for the reply
    Flash
     
  6. Flash

    Flash
    Vancouver
    Member

    Messages:
    82
    Likes Received:
    44
    The inside is silver as well except where a 9mm went inside a 40 and the base was out then the inside stayed brass colored. And just in case, I don't smoke anything.;)
     
  7. Certaindeaf

    Certaindeaf
    SE Portland
    Well-Known Member

    Messages:
    9,574
    Likes Received:
    12,274
    It probably has a higher chrome content than before.. and is now peen hardened. yay
    Oh, and it's Luger.
     
  8. noylj

    noylj
    high desert
    Active Member

    Messages:
    157
    Likes Received:
    54
    magnets aren't attracted to aluminum.
    Totally stupid idea: you've leeched all the zinc to the surface...
     
    Gunner3456 and (deleted member) like this.
  9. usagi

    usagi
    Redmond
    Well-Known Member

    Messages:
    544
    Likes Received:
    380
    something you are doing is leaching zinc out of your brass, and it then it gets plated on the surface. your brass is structurally weakened.
     
    Gunner3456 and (deleted member) like this.
  10. Flash

    Flash
    Vancouver
    Member

    Messages:
    82
    Likes Received:
    44
    I took all the brass and de primed and sized it. Then I put the brass back in the drum and added the same soap with the Lemishine ran it for 2 hrs to clean primer pockets. When I opened up the drum the brass looked brass colored just like it should, all is back to normal. Going to start pre washing before doing anything as the only thing I can think of is something was in the brass or was mixed in with it that I didn't notice.

    Thanks for the feedback, glad you guys are there to bounce problems like I just experienced.
     

Share This Page