I'm going to disagree a little with bearhunter on strictly semantic grounds. Linotype is not an alloy, it is a machine.
The Linotype machine simplified the process of assembling printing letter stamps for printing onto paper (typesetting). The machine came onto the market 140 years ago, and did not come to market with any special alloys for the printing material. Instead, it used the same type metals that had been standard for typesetting for the previous 200 years.
So, what casters today call "linotype" is actually standard eutectic type metal, such as was used for typesetting since the days of Shakespeare. The
Mergenthaler Linotype Company never claimed this alloy as their own or made any attempt to associate their own name with it.