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33TECHNICAL DATASpeeds and FeedsTAPERMaterial Group Material Type Cutting Speed (Vc) m/minSteel Structural Steel 50-70Free Cutting Steel 50-70Unalloyed Heat Treatable Steel 40-60Unalloyed Case Hardened Steel 40-50Alloyed Case Hardened Steel 30-40Nitriding Steel 30-45Acid Resistant / Stainless Steel, Sulphured 20-30High Tensile Steel Low Carbon Steel 80-100Medium Carbon Steel 75-90Alloyed Heat Treatable Steel 50-70Tool Steel 20-35High Speed Steel 30-40Spring SteelCast Materials Cast Iron 90-100Spheroidal Graphite & Malleable CI 60-80Chilled CI 50-75Aluminum & Aluminum 150-180Aluminum Alloys Al Wrought Alloys 120-120Al Cast Alloys < 10%Si 150-180Al Cast Alloys > 10%Si 100-130Special Alloys Special AlloysTi Alloys 20-30Non ferrous Metals Copper Low Alloyed 100-120Brass 100-120Bronze 130-150Magnesium Alloys Mg Alloys 120-140Taper End MillTECHNICAL DATA
