Grade for hard steels

With a PCBN substrate and TiAlN ceramic gold coating, the BNC300 grade from Sumitomo Electric, Mount Prospect, Ill., machines hardened steels involving interrupted cuts.
Sept. 11, 2005
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With a PCBN substrate and TiAlN ceramic gold coating, the BNC300 grade from Sumitomo Electric, Mount Prospect, Ill., machines hardened steels involving interrupted cuts. A new brazing technology enhances the BNC300's cutting-edge strength, and all corners are brazed individually.sumicarbide.com
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