Why on earth would anyone need to heat treat linotype with a BHN of 22? But again, arsenic is not necessary for heat treatment.
Don
Why on earth would anyone want a plating or jacket (35 BHN plus) then? If it matters Ive used up to 32 for a base shank....
What BHN increases in your lead/antimony or lead, tin and antimony alloy heat treated without arsenic are you getting?
10 points or within curing temp variances?
Ive seen the LASC document, but the author seems to have one "example" of allegedly heat treating lead and linotype compared to his numerous successes of trace arsenic present alloys.
Thanks.
