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#4 Babbitt Federated Castomatic alloy?

Discussion in 'Handloading and Reloading' started by acfixerdude, May 12, 2012.

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  1. acfixerdude

    acfixerdude Member

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    Anybody have info on this? I've read a couple things saying its a type of hardware/hammer alloy but it doesn't seem very hard.

    Thanks
     
  2. rcmodel

    rcmodel Member in memoriam

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    Babbitt metal is primarily used for poured bearings on shafts in machinery.
    Years ago a harder grade then yours was used for main & rod bearings in car engines.

    #4 is composed of 84-86% lead, 1-2% Tin, and 12-14% antimony.

    That makes it very similar to Linotype alloy which makes very fine hard cast bullets.
    It would be worth a try for casting rifle or magnum handgun bullets.

    rc
     
  3. Striker Fired

    Striker Fired Member

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    It would be uneeded hardness as it sits. I would mix it with pure or softer range lead to get it down to 3-5%antimony and 2-3%tin.Plenty hard for magnum handgun and even many rifle velocities. Water drop for higher performance rifle load.
     
  4. acfixerdude

    acfixerdude Member

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    Thanks guys, picked it up at the scrap yard today and looking to sell it; just needed to see what it was first.

    I passed up the chance to get a couple other ingots (not this shape and not same stuff). They were quite a bit harder and not marked so I didn't buy them. They were long and heavy, one was broken and it looked like a brittle fracture, not a ductile failure like lead would give (hey, I actually used some information from my materials science class!).
     
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