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36TECHNICAL DATASpeeds and FeedsROUGHERMaterial Group Material Type Cutting Speed (Vc) m/minRoughers (m/min) Roughers (SFM)Steel Structural Steel 90-120 294 - 392Free Cutting Steel 70-120 228 - 392Unalloyed Heat Treatable Steel 70-120 228 - 392Unalloyed Case Hardened Steel 100-130 327 - 425Alloyed Case Hardened Steel 60-100 196 - 327Nitriding Steel 80-120 260 - 392Acid Resistant / Stainless Steel, Sulphured Austenitic Steel, 40-60 130 - 196High Tensile Steel Low Carbon Steel 90-110 294 - 360Medium Carbon Steel 80-100 260 - 327Alloyed Heat Treatable Steel 70-100 228 - 327 Tool Steel 70-100 228 - 327 Cast Materials Cast Iron 100-150 327 - 490Spheroidal Graphite & Malleable Ci 90-120 294 - 392Chilled CiSpecial Alloys Special Alloys 30-40 98 - 130Ti Alloys 40-60 130 - 196Rougher End MillTECHNICAL DATA