
Grade Ceramic Superb wear resistance enables ultra-high-speed machining. Sumitomo Electric Hardmetal's Advanced Ceramic utilises a special process to produce extremely tough grades. This new development permits ultra-high-speed cutting of cast iron, heat-resistant alloy, and Insert Grades ultra-hard rolled material with stability. A Grade Map For Turning Carbide Coated High-speed Cutting Finishing to Light Cutting Medium Cutting Rough to Heavy Cutting Work Material — 01 10 20 30 40 Cermet NB90S Cast Iron Carbide WX120★ Exotic Alloy CBN NB100C Hardened Steel PCD Characteristic Values Ceramic For Turning Work Material Grade Hardness (HRA) TRS (GPa) Main Coating Components Coating Thickness (μm) Features Al2O3 + carbon-based ceramic NB90S 94.8 0.9 — — Suitable for medium cutting to finishing of cast iron. Cast Iron Reinforced with SiC whiskers. WX120★ 90.0 1.2 — — For heat-resistant alloy and ultra-hard roll cutting. Exotic Alloy Al2O3-based high strength ceramic with ZX Coat. NB100C 95.0 1.0 TiAlN Type 2 Low-speed/continuous light cutting of hardened steel Hardened Steel ★WX120 is only sold in Japan. A36