693 Material groups Application Cutting speed SFPM m/min Steel, cast steel Non-hardened, non-heat treated steels up to 1200 N/mm2 (< 38 HRC) Construction steels, carbon steels, tool steels, non-alloyed steels, case-hardened steels, cast steels Coarse machining with high stock removal 1476-2953 450–900 Hardened, heat-treated steels exceeding 1200 N/mm2 (> 38 HRC) Tool steels, tempered steels, alloyed steel, cast steels 820-1148 250–350 Stainless steel (INOX) Rust and acid-resistant steels Austenitic and ferritic stainless steels Coarse machining with high stock removal 820-1148 250–350 Non-ferrous metals Hard-non-ferrous metals Bronze, titanium/titanium alloys, hard alu-alloys (high Si content) Coarse machining with high stock removal 820-1148 250–350 High-temperature resistant materials Nickel based alloys, cobalt based alloys (aircraft engine and turbine construction) 984-1476 300–450 Cast iron Gray cast iron, white cast iron Cast iron with flake graphite EN-GJL, with nodular graphite cast iron EN-GJS, white annealed cast iron EN-GJMW, black cast iron EN-GJMB Coarse machining with high stock removal 1476-1969 450–600 Cutting speed SFM 820 984 1148 1312 1476 1640 1969 2953 m/min 250 300 350 400 450 500 600 900 ∅ (in) ∅ (mm) Rotational speed (rpm) 5/64" 2 40,000 48,000 56,000 64,000 72,000 80,000 95,000 100,000 1/8" 3 27,000 32,000 37,000 42,000 48,000 53,000 64,000 100,000 5/32" 4 20,000 24,000 28,000 32,000 36,000 40,000 48,000 70,000 1/4" 6 13,000 16,000 19,000 21,000 24,000 27,000 32,000 48,000 5/16" 8 10,000 12,000 14,000 16,000 18,000 20,000 24,000 36,000 3/8" 9.6 8,000 10,000 11,000 13,000 14,000 16,000 19,000 30,000 1/2" 12 7,000 8,000 9,000 11,000 12,000 13,000 16,000 24,000 5/8" 16 5,000 6,000 7,000 8,000 9,000 10,000 12,000 18,000 3/4" 20 4,000 5,000 6,000 6,000 7,000 8,000 10,000 15,000 1" 25 3,000 4,000 4,000 5,000 6,000 6,000 8,000 12,000 CUT SPECIFICATION DOUBLE CUT 11 Index 10 9 OIL 8 7 6 5 4 3 2 1
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