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Thread: Mytery alloy

  1. #1
    Boolit Buddy
    Join Date
    May 2012
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    OKC, OK
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    210

    Mytery alloy

    Had an issue today. Supposedly an alloy of 10 pounds of lino with 100 pounds of pure.
    Put an ingot in the master caster 40 pound pot. Instant spout freeze after temp got to 745. raised temp to 875, no luck. Shut down, emptied the pot and filled with isotope alloy 710 and back in business. Seperated the alloy for later investigation. negative for zinc by the acid test. Any ideas?

  2. #2
    Boolit Bub

    PJEagle's Avatar
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    Dec 2014
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    Omaha, NE
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    38
    I would contact BNE for instructions on sending him a sample for analysis. He only asks for one pound of lead for each sample he tests.

  3. #3
    Boolit Buddy
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    Will do.

  4. #4
    Boolit Buddy
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    May 2012
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    BNE pm sent.

  5. #5
    Boolit Grand Master fredj338's Avatar
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    Feb 2009
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    kalif.
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    I would bet zinc, acid test or not. Happened to me once. Buddy was getting ww & turning them into ingots but NOT trashing the zinc ones. A 15# ingot in my 1/2 empty Magma froze the bp spout. He since changed his scrap melting method by turning the heat down so the zinc ones floated out.
    EVERY GOOD SHOOTER NEEDS TO BE A HANDLOADER.
    NRA Cert. Inst. Met. Reloading & Basic Pistol

  6. #6
    Boolit Master
    Join Date
    Jan 2011
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    NE Kansas
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    Did applying heat to the nozzle restore the flow, or did you not try that. Not sure how that works with a master caster. Just because the pot is hot, perhaps the nozzle is not quite hot enough.

    Could ambient air temp be a factor?

  7. #7
    Boolit Buddy
    Join Date
    May 2012
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    OKC, OK
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    Used a propane torch to heat the spout. Very slow drip. After I emptied the pot and refilled with known alloy, still had to clear the spout and all is well now. Sent samples for testing to BNE. Maybe we can figure out the mystery. I’ll post results when they come in.

  8. #8
    Boolit Master
    Join Date
    Sep 2016
    Posts
    607
    If it is zinc, you may be able to salvage the alloy by diluting the zinc down. What I've read here suggests that a low percentage still can be cast.

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Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check