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19 Piece Cobalt drill bit set. Alpen HSS-ECo Cobalt KP19 Jobber drill set in plastic cassette 19 pcs. ø 1.0-10.0. mm. Range. of application: 5% cobalt-alloyed jobber drills with high heat-resistance for drilling steels. with tensile strength over 800 N/mm², especially suitable for high alloyed steels,. bearing-steels, hot/cold-rolled steel. Ideal for stainless steel. For drilling into: Structural steels < 400 N/mm². Free cutting steels < 850 N/mm². Unalloyed heat treatable steels < 1.100 N/mm². Alloyed heat treatable steels < 1.300 N/mm². Copper, brass, aluminium. Stainless steels. Grey cast iron, malleable cast iron. Plastics. Strengths. HIGHLY ACCURATE. special shape, drills without center-punching. BREAK RESISTANT. thanks to CNC heat treatment. INDUSTRIAL QUALITY. suitable for NC machines. SELF-CENTRING. thanks to special point shape. TEMPERATURE RESISTANT. Up to 600° C drilling even with the highest thermal stress. FAST. due to special drill grinding fast drilling progress and. up to 50% less feed pressure required.
