madsenshooter
09-02-2011, 03:55 PM
Here's some info I found digging around. Seems there was in the 1940s a type of lino used for repeat, long run jobs that had the following formula:
"Hard metal contains 14% tin, 24% antimony and 61% lead, and other ingredients in small percentages, which calls for a crucible temperature 100 degrees above regular Linotype metal's, 4 - 11 1/2 - 84 1/2 at 535 degrees."
Anyone wish to take guess as to what the BHN of this stuff might have been? It was labeled V-240 hard metal, and the Lino-Type company in the 40s and 50s offered to equip machines for the harder mix. I haven't been able to find any other references, though I have an old engineering metals handbook that I've not checked yet.
"Hard metal contains 14% tin, 24% antimony and 61% lead, and other ingredients in small percentages, which calls for a crucible temperature 100 degrees above regular Linotype metal's, 4 - 11 1/2 - 84 1/2 at 535 degrees."
Anyone wish to take guess as to what the BHN of this stuff might have been? It was labeled V-240 hard metal, and the Lino-Type company in the 40s and 50s offered to equip machines for the harder mix. I haven't been able to find any other references, though I have an old engineering metals handbook that I've not checked yet.