348 / Step drills & Core drills www.youtube.com/NortonAbrasivesEMEA HSSM2 TiAIN COATED HSSM2 TiN COATED +++++ ++++ TiAIN (Aluminium Titanium Nitride) coating provides excellent performance; it is very hard and wear resistant with low heat conductivity. It has very good chemical stability and oxidation resistance. Recommended for use with heat resistant alloys, high alloy steel, stainless steel, titanium alloys and NiCo alloys. TiN coated step drills provide a cost effective solution with long tool life. Hard, with good temperature stability and a low friction coefficient. For general purpose use on most materials including steel, stainless steel <1100 N/mm2, cast iron, brass, bronze and plastic. INTRODUCTION Norton step drills work optimally on metal sheets of up to 5mm thickness. However many different size holes can be drilled, with a clean finish every time. Prolong the life of Norton step drills by using with OneBond CO 500 Cutting Oil for faster cutting through metal sheets. STEP DRILL PRODUCT SELECTION GENERAL INFORMATION RECOMMENDED CUTTING SPEEDS Material Carbon steel <700 N/ mm2 Carbon steel >700 N/ mm2 Alloy steel <1000 N/ mm2 Stainless Steel <1400 N/ mm2 CasI iron <250 N/ mm2 CasI iron >250 N/ mm2 CuZn (Brittle) CuZn (Tough) AI-alloy <11% Si Thermo plastics Duro plastics Vc=m/min 30 20 20 10 15 10 60 35 30 20 15 Coolant Cutting oil Cutting oil Cutting oil Cutting oil Compressed air Compressed air Compressed air Compressed air Cutting oil Water Compressed air Ø mm R.P.M 3-8 3185-1194 2123-796 2123-796 1062-398 1592-597 1062-398 6369-2389 3715-1393 3185-1194 2123-796 1592-597 9-15 1062-637 708-425 708-425 354-212 531-318 354-212 2123-1274 1238-743 1062-637 708-425 531-318 16-22 597-434 398-290 398-290 199-145 299-217 199-145 1194-869 697-507 597-434 398-290 299-217 23-29 415-329 277-220 277-220 138-110 208-165 138-110 831-659 485-384 415-329 277-220 208-165 30-36 318-265 212-177 212-177 106-88 159-133 106-88 637-531 372-310 318-265 212-177 159-133 STEP DRILLS & CORE DRILLS
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