Cobalt-steel milling bit. | |||
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Cobalt-steel milling bit. This is a lovely 1.5" diameter, 6-flute cobalt steel square end mill. It would be used in a milling machine to cut a variety of metals. I list it under cobalt even though the main ingredient is of course iron, because cobalt is the ingredient that distinguishes this alloy from other steel alloys with different properties. Cobalt steel is particularly hard, and thus suitable for cutting tools. Source: eBay seller valpone Contributor: Theodore Gray Acquired: 9 February, 2009 Text Updated: 8 February, 2009 Price: $15 Size: 1.5" Purity: <5% | |||
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