As stated in another post, due to age and health, I am disposing of a lot of my boolit casting items. While going through my linotype supply I was testing ingots and lino spacers on my Lee tester to be sure they were what I had marked the container to be. Guess I had a "brain-lock" that linotype was 22 BHN.
Well I had a quantity of spacers that tested 19.3 BHN on my tester. The ingots smelted from lino letters tested 22BHN. Could not determine what the spacers were made of. Visited the LASC site and there the answer was, 5 different compositions of linotype with percentage of tin/antimony/lead with BHN ratings of 18 to 22 with a tin percentage of 2 to 6 %. Got my brain unlocked!
Larry