"Used this on alloy steel and the surface Ra was impressive
Model Nomenclature Decoder: S08K-SDUCR07 (ISO / National Standard Chart Compliant)
BEYOND WTJNR1616H16 WTJNR WTJNL 1616 1616H16 External Turning Tools Holder WTJNL1616 H16 Cutter Carbide Inserts TNMG TNMG160404
Complex Internal Contour Profiling: Specifically optimized for sweeping complex
A: Cermet (like NS9530) gives a higher shine on steel
GBA32R200-020 PR930 (10pcs) CNMG120404N-SU AC700G "Used this on alloy steelPVD Coated Carbide: PR930 , Designation: GBA32R200 020 PR930 CW: 2. 00 , CDX: 2. 5 , RE: 0. 20 , Carbon Steel Alloy Steel: Light Interruption 2nd Choice, Stainless Steel: Light Interruption 2nd Choice , Hard materials (<=40HRC): Continuous 2nd Choice , Color: Reddish Gray , Coating Main Component: iAlN , Advantages: Application: Low machining speed, precise machining with sharp edge