View Full Version : Crystal structure of two different alloys
zomby woof
12-05-2009, 10:08 AM
I used min-muffin tins for the first time yesterday. I noticed something kind of strange. It's not near as noticeable with Lyman ingots. The structure of the lead is quite different in the two alloys I smelted. The one on the left is WW and the right is indoor range scrap. It must be the way the lead is mixed with Tin/Antimony. Both were smelted in the exact same way.
http://www.hunt101.com/data/500/medium/100_3035.JPG
lwknight
12-05-2009, 01:55 PM
The larger mosaic look means less antimony. It looks to me that its practically nil by appearance. Once you get to about 1 or more percent antimony, they all look alike.
Also you will find that if cast into a cold mold they are bright and shiny and as the mold gets hotter the more crystal-ish or matte they look.
geargnasher
12-05-2009, 04:24 PM
I had that same "Galvanized" look to boolits cast from a couple of theatre curtain counterweights I melted down. They made great boolits, cast well with a little tin added, and looked just like galvanized roofing tin on the surface, with that flaky, faceted pattern. The alloy also left a dull purple/gold skin near the bottom of the pot if left undisturbed during casting, another sign of it being mostly lead, but the boolits were about 12 bhn with onlyn 2% tin added. Never figured it out, but I bet LWKnight has it right.
Gear
Gunslinger
12-05-2009, 04:42 PM
Holy s*** you guys are like a frickin dictionary :coffeecom.
(The forum inserted the * itself)
(Wonder if it will do it with this word too... ready.... ****!)
(Ha ha this is awesome)
lwknight
12-05-2009, 06:37 PM
Can someone explain the previous post?
I'm lost.
Dogchaser
12-06-2009, 02:16 AM
Can someone explain the previous post?
I'm lost.
He is simply amazed how smart the forum members are and fascinated with the auto edit for profanity.
;)
357maximum
12-06-2009, 02:45 AM
Can someone explain the previous post?
I'm lost.
apparently you have never mixed extreme boredom and vodka[smilie=b:
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