Though most metallurgists refer to the metal as columbium, the name niobium was officially adopted by chemical authorities in 1950 after 100 years of controversy.
Columbium is steel-gray or silvery-white, but takes on a bluish tint when exposed to air at room temperatures for extended periods. The metal’s oxidation in air commences at 200°C. Columbium, when used in alloying, improves strength, and its superconductive properties are enhanced when combined with zirconium.
Applications: Sodium vapor lamps, corrosion-resistant equipment, superconducting magnets, aerospace parts, alloys, and drill bits.
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Additional information
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| dimension-1 | .1875", 1-1/2”, 1-1/4”, 1-1/8”, 1-11/16, 1-13/16”, 1-15/16”, 1-3/16”, 1-3/4”, 1-3/8”, 1-5/16”, 1-5/32”, 1-5/8”, 1-7/16”, 1-7/8”, 1-9/16”, 1”, 1/2", 1/4", 1/8”, 11/16", 13/16", 15/16”, 2-1/2”, 2-1/4”, 2-1/8”, 2-11/16”, 2-13/16”, 2-15/16”, 2-3/16”, 2-3/4”, 2-3/8”, 2-5/16”, 2-5/8”, 2-7/16”, 2-7/8”, 2-9/16”, 2", 3”, 3/16", 3/4", 3/8", 5/16", 5/8", 7/16", 7/8", 9/16", Other (Please Specify) |
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