Materials as in woodworking up to 1870 tools in use

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Unformatted text preview: • The chief characteristics: low hot hardness and poor hardenability. • A typical composition: carbon 0-8~13%, silicon 0.1~0.4%, manganese 0.1~0.4%. • The higher the carbon content, the greater will be the hardness and the wear resistance. Carbon Tool Steel Fractional Bradpoint Drill Bits Threaded Shank http://www.carbideprocessors.com/categories/Drill-Bits-for-Boring-Machines/Brad-Point-Drills-%252dThreaded-Shank/Brad-Points-%252d-Fractional-%252d-Carbon-Tool-Steel/ Major Classes of Tool Materials 2. High-Speed Steels - Taylor discovered by heat-treatment process HSS consists of tungsten (18%) and chromium (4%); they may also contain cobalt, vanadium or molybdenum. - relatively inexpensive and tough - but have limited hot hardness and can be used up to 550C Coated HSS of a thin (1 to 2 micrometre) coating of TiN (RC 80-85) has a relatively ductile, shock-resistant core while the coating has exceptional wear resistance and lower friction. Major Classes of Tool Materials Type Type C W Mo Cr V Co Rc M- 2 M- 1...
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