by RxForPain » Sun Apr 17, 2011 8:27 pm
Well... after doing some more research I think I have some idea of the metal composition. It appears that "XXXX Nickel" stands for a bearing alloy that has nickel added to it.
"Babbitt" refers to a bearing alloy consisting typically of tin, lead, antimony, and copper. "XXXX Nickel" is a trade name for such an alloy that also contains a small percentage of nickel.
Issac Babbit was given the patent in 1839. I found a magazine ad from 1915 with an advertisement by Great Western Smelting and Refining Co. stating they made Babbit along with many other types of metals.
There seem to be various compositions depending on the type of bearing it would be used for.
Ones without the nickel:
90% tin, 10% copper
89% tin, 7% antimony, 4% copper
80% lead, 15% antimony, 5% tin
76% copper, 24% lead
75% lead, 10% tin
67% copper, 28% tin, 5% lead
Not the jackpot, but still a cool and interesting slice of history. Still not sure about the date the bar was cast, but the search goes on. I would imagine since this is an industrial metal alloy that most ingots have been long since been melted down and used so I would think this is a pretty rare ingot.