lead bars

[calsite]

This is a call out to those who know their lead. I have the opportunity to get about 500 lbs of bar lead, it's in 50 lb ingots and is stamped with the numbers
L50302. Can anyone help me identify what I'm looking at. The owner also said something about it being arsenic based or something like that.

[cohutt]

This is a call out to those who know their lead. I have the opportunity to get about 500 lbs of bar lead, it's in 50 lb ingots and is stamped with the numbers
L50302. Can anyone help me identify what I'm looking at. The owner also said something about it being arsenic based or something like that.


start here, from lasc site: http://www.lasc.us/CastBulletAlloy.htm#UNS


Compositions and Grades of lead. Malleability, softness, lubricity and coefficient of thermal expansion, all of which are quite high; and elastic modulus, elastic limit, strength, hardness, and melting point, all of which are quite low are related properties that account for the extensive use of lead in many applications.
The Unified Numbering System (UNS) designations for various pure lead grades and lead-base alloys. If you acquire ingots with any of these numbers, this what you have.

Pure leads L50000 - L50099

Lead - silver alloys L50100 - L50199

Lead - arsenic alloys L50300 - L50399

Lead - barium alloys L50500 - L50599

Lead - calcium alloys L50700 - L50899

Lead - cadmium alloys L50900 - L50999

Lead - copper alloys L51100 - L51199

Lead - indium alloys L51500 - L51599

Lead - lithium alloys L51700 - L51799

Lead - antimony alloys L52500 - L53799

Lead - tin alloys L54000 - L55099

Lead - strontium alloys L55200 - L55299


and :

Arsenical lead (UNS L50310) is used for cable sheathing. Arsenic is often used to harden lead-antimony alloys and is essential to the production of round dropped shot.

[calsite]

Thank you so much for this information.

[calsite]

I'm just concerned about buying stuff with zinc in it. The guy said this is pretty hard stuff your information is quite reassuring I plan to set my pot for 650 and drop a peice of this in just to make sure it melts before I get the rest. Thanks again....