Milling Insert Grades for Stainless Steels and Other Metals: YBM251, YBM253, YBM351 (Toughness: YBM251 < YBM253 < YBM351)Grade: YBM251 (ISO Class: P15-P40, M10-M30): TiCN + Thin Al2O3 + TiN (CVD) Coated High-Strength Carbide
With strong and high-toughness substrate and coating, YBM251 is suitable for medium milling of stainless steels and steels.Grade YBM253 (ISO Class: P15-P40, M10-M30): TiCN + Ultrafine Al2O3 (CVD) Coated High-Strength Carbide
YBM253 has a gradient substrate with a multi-layer coating composed of TiCN and ultra-fine Al2O3 that offers excellent strength and toughness. It is the primary grade for rough milling of stainless steels and general-purpose milling of steels and other materials.
Grade: YBM351 (ISO Class: P25-P40, M20-M35): TiCN + Thin Al2O3 + TiN (CVD) Coated High-Toughness Carbide
With a highly engineered gradient and ultrafine carbide substrate and nano coating, YBM351 offers great high cutting edge strength with enhanced toughness. Inserts with YBM351 are highly recommended for rough milling of stainless steels and steels in unstable machining conditions or substitute for YBM253 when insert of the latter grade is unavailable.