Cutting Conditions (Guide) : : Stable Cutting : General Cutting : Unstable Cutting CHIP BREAKER RECOMMENDATION y Chip Breaker Selection Table Work Material Properties CuttingConditions Chip Breaker Grade 1st Recommended 2nd Recommended 1st Recommended 2nd Recommended P Mild Steel Hardness< 180HB LM M MP6120 VP15TFLMP6130─ Carbon SteelAlloy SteelAlloy Tool SteelHardness180-350HB< 350HB(Annealing)L M MP6120 VP15TFMLMP6120VP15TFMLMP6130─ Pre-hardened Steel Hardness35─45HRC M L MP6120 VP15TFMLMP6130─ M Hardness L M MP7130 VP15TF Austenitic Stainless < 280HB M L MP7130 ─ Steel Hardness L M MP7130 VP15TF > 200HB M L MP7130 ─ Duplex Stainless Steel Hardness< 280HB LM M MP7130 VP15TFLMP7130─ Ferritic and MartensiticStainless Steel─ LM M MP7130 VP15TFLMP7130─ Precipitation Hardening Hardness L M MP7130 VP15TF Stainless Steel < 450HB M L MP7130 ─ K Gray Cast Iron Tensile Strength< 350MPa MM L MC5020 VP15TFLVP15TF─ Ductile Cast Iron Tensile Strength< 800MPa MM L MC5020 VP15TFLVP15TF─ N Aluminum Alloy ContentSi< 5% LM M TF15 ─LTF15─ S Titanium Alloy(Ti-6Al-4V,etc.) L─ M M MP9120 VP15TFLMP9130─ Titanium Alloy(Ti-5Al-5V-5Mo-3Cr,etc.)─ LM M MP9120 VP15TFLMP9130─ M L MP9120 VP15TF Heat Resistant Alloy ─ M L MP9130 ─ H Hardened Steel Hardness40─55HRC M ─ VP15TF ─ L L131 INDEXABLE MILLING