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High-Performance Taps Grades and Grade Descriptions Coatings are designed for optimised tapping performance in specifi c materials . P Steel M Stainless Steel K Cast Iron N Non-Ferrous S High-Temp Alloys H Hardened Materials wear resistance 05 10 15 20 25 30 35 40 45 PVD coated TiCN and fi ne grain carbide. Extraordinary wear resistance when tapping cast iron. High-temperature hardness allows long life at up to 4x faster speed than HSS-E-PM taps. Grade Description Coated carbide, PVD two-layer coating over fi ne-grain carbide. Coating consists of low friction CrC/C over wear-resistant TiN. CrC/C resists galling of non-ferrous materials to the tap. Provides superior performance for tapping cast aluminium and other non-ferrous materials. Coating Coated carbide, PVD two-layer coating with heat-resistant TiAlN base layer and low-friction MoS2 top layer over carbide substrate. Use in hardened steel 55–63 HRC. toughness K N H Coated HSS-E-PM, PVD heat- and wear-resistant high-vanadium cobalt powder metal HSS substrate coated with wear-resistant TiCN base layer. Use in steel, cast iron, and cast aluminium with silicon. P HSS-E-PM, PVD heat- and wear-resistant high-vanadium cobalt powder metal HSS substrate. Coating consists of low-friction CrC/C over wear-resistant TiN base layer. Use for tapping stainless steel and non-ferrous materials. K M widia.com X6 N