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Rotabroach bits

Title: Rotabroach bits
URL: https://www.weldingsuppliesdirect.co.uk/metal-working-tools/hss-cutters.html
Description: It also retains its hardness at higher temperatures than HSS, so it can be worked harder to cut faster. ... Although carbide tools are more costly, the overall cost is substantially less because only the thick cutting edge is carbide. The body and shank are made from less costly tough hardened tool steel. Cubic boron nitride is the standard choice for machining alloy and tool steels with a hardness of 50 Rc or higher. Typical cutting speeds: 30 - 310 m/min. The hardest known substance is diamond. High speed steels. They lose their hardness at 600 °C, and are widely used in machining. Due to their ability to retain hardness at higher temperature, higher cutting speeds are possible. Cobalt Steel is very similar to High Speed Steel. ... Cobalt is a step up from HSS and offers better tool life than HSS. Since Cobalt is harder and therefore more brittle than HSS, Cobalt drills usually have a more rugged construction with less room for chips to escape in the flute area. Tool steel is hardenable high carbon steel or alloy steel which is used to make cold working tools like chisels, punches, dies or moulds. ... If tool steel is used in such condition, it will loose it's hardness. But HSS tool will maintain its hardness. Thus, the most important property of HSS is “hot hardness”