Word: leadless
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Dates: during 1940-1940
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...Metallographer Oscar Edward Harder of Battelle Memorial Institute (Columbus, Ohio), working with Inland Steel Co.'s research staff, has developed a lead-steel alloy (one part of lead to 500 parts of steel) which is just as strong as leadless steel, but can be machined 30% to 50% faster for mass-production parts. The soft, tiny particles of lead in the alloy serve to lubricate the point where the tool cuts; the tool stays sharp longer, the machine runs faster...
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