REAMERS USER GUIDE Machining Conditions for Solid Carbide Reamers Material Tensile Strength orBrinell HardnessN/mm2 bzw. HBReamerDiameter mmReamingAllowance Relativeto DiameterFeed mm/revCutting Speedm/min up to 10 0.04-0.10 0.15-0.25 up to 1000 10-25 0.10-0.25 0.20-0.35 6-20 Steel 25-40 0.25-0.40 0.30-0.50up to 100.04-0.100.12-0.20 1000-1400 10-25 0.10-0.25 0.15-0.30 6-15 25-40 0.25-0.40 0.20-0.40 up to 10 0.05-0.10 0.15-0.25 400-500 10-25 0.10-0.25 0.20-0.40 10-20 Cast steel 25-40 0.25-0.40 0.30-0.50up to 100.04-0.100.12-0.20 500-700 10-25 0.10-0.25 0.15-0.30 6-15 25-40 0.25-0.40 0.20-0.40 up to 10 0.06-0.12 0.12-0.20 TitaniumTitanium Alloy 500-1300 10-25 0.10-0.25 0.15-0.30 6-15 25-40 0.25-0.40 0.20-0.40 up to 10 0.06-0.12 0.20-0.30 up to 220 HB 10-25 0.10-0.30 0.30-0.45 10-25 Grey cast iron 25-40 0.30-0.50 0.40-0.70up to 100.06-0.120.15-0.25 over 220 HB 10-25 0.10-0.30 0.20-0.35 10-20 25-40 0.30-0.50 0.30-0.50 Spheroidal graphite up to 10 0.06-0.12 0.15-0.25 Cast iron 10-25 0.10-0.25 0.20-0.40 8-15 Malleable cast iron 25-40 0.25-0.40 0.30-0.60 up to 10 0.06-0.12 0.20-0.30 Si<7% 10-30 Aluminum alloy over 80 HB 10-25 0.10-0.30 0.30-0.50 25-40 0.30-0.50 0.40-0.70 Si<7% 30-60 up to 10 0.10-0.20 0.30-0.60 Copper 10-25 0.20-0.40 0.40-0.80 20-60 25-40 0.40-0.60 0.50-1.00 Brass up to 10 0.06-0.12 0.20-0.30 Red bronze 10-25 0.10-0.30 0.30-0.50 15-50 Cast bronze 25-40 0.30-0.50 0.40-0.70 up to 10 0.10-0.25 0.30-0.60 Thermoset polymers 10-25 0.20-0.40 0.40-0.80 15-30 25-40 0.40-0.60 0.50-1.00 329