Original Korea TaeguTec WNMG080404/08-MT CT3000 Cermet Insert for High-Speed Machining with Multi-Line Chipbreaker and Corrosion Resistance

The TaeguTec WNMG080404-MT CT3000 / WNMG080408-MT CT3000 are original Korean negative rake 80° WN trigon indexable turning inserts from TaeguTec’s WNMG medium machining series, matched with premium CT3000 solid cermet substrate grade. Equipped with MT medium-cut chipbreaker geometry, they offer two common nose radius options: R0.4 and R0.8. The CT3000 cermet material features ultra-low friction coefficient, outstanding high-temperature wear resistance and anti-built-up edge performance, specially optimized for continuous medium turning and semi-finishing of carbon steel, alloy steel and austenitic stainless steel. With 6 usable cutting edges per single-sided insert, they fit standard MWLNR/MWLNL series WNMG08 tool holders for external OD turning, facing and light internal boring on CNC lathes, widely used for mass production of auto shafts, hydraulic fittings and general precision steel components.

• Brand: TaeguTec (Korea top cutting tool manufacturer under IMC Group)
• Full Official ISO Model Codes: WNMG080404-MT CT3000, WNMG080408-MT CT3000
• Insert Shape: 80° negative trigon (WN shape), single-sided with 6 usable cutting corners
• Inscribed Circle IC: 12.7 mm (08 size standard)
• Insert Thickness S: 4.76 mm (T4 specification)
• Two Standard Nose Radii: RE0.4 (WNMG080404), RE0.8 (WNMG080408)
• Relief Angle: 0° negative back relief for strong edge rigidity
• Chipbreaker Type: MT universal medium rough & semi-finish chipbreaker
• Material Grade: CT3000 solid cermet grade, matte silver surface without coating film
• ISO Application Range: P10-P20 carbon/alloy steel, M10-M20 stainless steel, K10-K20 cast iron
• Substrate Characteristic: High-hardness cermet base, excellent thermal stability & wear resistance
• Compatible Tool Holders: MWLNR08, MWLNL08 external turning lathe tool bars
• Standard Packing: 10 pieces per original sealed TaeguTec plastic compartment box
• Origin: Made in Korea

• Carbon & alloy structural steel: S45C, 4140, 40Cr, low-hardness pre-hardened mold steel
• Austenitic & martensitic stainless steel: SUS304, SUS316, 420 stainless
• Grey cast iron, ductile iron, compacted graphite iron
• Mild low-carbon steel for high-volume continuous turning

• Medium turning and semi-finishing of steel automotive drive shafts, hydraulic pipe joints and valve bodies
• External diameter turning, end facing and light internal boring on general CNC lathe precision components
• High-speed continuous steel machining requiring ultra-smooth surface finish and long consistent tool life
• Mass automated production lines with mixed carbon steel & stainless steel workpieces
• Slight interrupted cutting with keyways, steps and uneven machining allowance, demanding rigid cutting edge
• Precision shaft parts manufacturing with strict dimensional tolerance and low surface roughness requirements

• Exclusive CT3000 solid cermet grade: Higher hardness and thermal resistance than coated carbide inserts, greatly reduces flank wear under high-speed steel turning, delivers stable mirror surface finish without built-up edge
• MT optimized medium chipbreaker design: Balanced chip curling performance for both medium rough feed and fine semi-finish cuts, prevents tangled long chips and smooth chip evacuation
• Negative 80° trigon 6-edge structure: Six usable cutting corners maximize material utilization rate, significantly cuts long-term tool procurement cost for mass factories
• Ultra-rigid negative relief edge structure: Strong edge strength to resist chipping during intermittent cutting and heavy feed medium turning
• Low-friction cermet base material: Minimizes cutting heat and workpiece work-hardening when machining sticky stainless steel, extends service life by 40%+ compared to ordinary carbide inserts
• Global standard WNMG08 dimension: Fully interchangeable with all MWLNR08 series turning holders worldwide, convenient unified spare part stocking for foreign trade clients