The perfect industrial metal must be stronger than steel, lighter than aluminum, heat resisting, tough. Metallurgists have not compounded it. But some 6,000 of them felt that they were approaching the goal as they listened to metallurgical discourses of the National Metal Congress held last week at Cleveland, the Foundry City.* Manganese-Molybdenum Steel. Hard and sharp were the Samurai swords of Japan, the Toledo blades of Spain, the Damascus cutlery of the Levantbecause their steels contained small amounts of molybdenum. However, the presence of molybdenum was accident. Mineralogists did not recognize it as...
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