USER GUIDE IS80 CVD Coated Si3N4 IW7 AL2O3+Sic Whiskers High Speed Rough Turning Main Advantages on Grey Cast Iron • High hardness (Hv 2,100) • Multi-layered coating on IS8 matrix • High fracture toughness due to SiC (silicon • Roughing and interrupted (1) cutting on cast iron carbide) whisker reinforced ceramics • Excellent thermal shock resistance, which enables using coolant and interrupted cut machining • Excellent for roughing and semi-finishing operations at 8-10 times faster cutting speeds ISOTURN INSERTS when compared with carbide grades • Good oxidation resistance due to its alumina substrate Cutting Speed (m/min) 450 IW7 IS9 Si3N4 IS9 Turning Nickel Based Alloys 150 • Very tough Si3N4 ceramic grade with high cutting edge stability 30 • Machining on nickel IC20 based high temprature alloys, in roughing to 0.1 0.15 0.30 finishing applications • Honing is the standard Feed mm/rev edge preparation (1) Coolant is not recomended for interrupted cutting. 202 202 ISCAR ISCAR