Kyocera WNMG080404C CA320 TME08385

Product Overview

The WNMG080404C CA320 TME08385 is a premium trigon 80° negative indexable insert manufactured by Kyocera in Japan. Designed for light roughing to finishing, this insert delivers high-precision surface finish with exceptional dimensional stability and extended tool life in demanding CNC environments.

Engineered with a TiCN + Al₂O₃ CVD multi-layer coating over a WC-Co substrate, the CA320 grade provides outstanding wear resistance and thermal stability during high-speed machining of steel, stainless steel. The C-Type chipbreaker geometry ensures optimal chip formation and evacuation, reducing downtime and improving surface integrity.

ISO Designation Breakdown

The WNMG080404C designation follows the ISO 1832 standard for indexable inserts. Each character and digit conveys critical geometric and functional information:

Engineering Dimensions & Geometry

Precision-ground to tight tolerances, the WNMG080404C insert meets exacting standards for CNC toolholder interchangeability and repeatability:

Grade Details — Key Grade Characteristics

Grade CA320 is a CVD-coated carbide grade optimized for light roughing to finishing operations in ferrous materials. Key characteristics include:

• Coating System: TiCN + Al₂O₃ multi-layer CVD coating providing excellent thermal barrier and crater wear resistance
• Substrate: WC-Co micro-grain carbide with high cobalt content for enhanced toughness
• Hardness: ~1,450 HV (Vickers) for superior abrasion resistance
• Transverse Rupture Strength: >2,800 MPa — ideal for interrupted cuts and heavy loads
• Operating Temperature: Up to 1,000°C in the cutting zone
• Color Identification: Gold-bronze top surface with black peripheral coating

Grade Comparison Matrix

Select the optimal grade for your application by comparing CA320 with adjacent grades in the Kyocera portfolio:

Chipbreaker Profile

The C-Type chipbreaker on the WNMG080404C is engineered for light roughing to finishing applications. Its macro-geometry features a carefully calculated rake angle and groove depth that promotes:

• Controlled chip curling and breakage into manageable segments
• Reduced cutting forces and heat generation at the tool tip
• Improved surface finish through stable chip evacuation
• Minimized built-up edge (BUE) when machining sticky materials like stainless steel

The chipbreaker land width and depth are optimized for the 0.4 mm nose radius, ensuring balanced chip flow across all engaged cutting edges.

Recommended Applications & Workpiece Materials

The WNMG080404C CA320 is recommended for the following material groups and applications:

• Carbon Steel: C35, C45, C60 — continuous to lightly interrupted turning
• Alloy Steel: 4140, 4340, 8620 — medium to roughing operations
• Stainless Steel: 304, 316, 420 — general turning with stable setups
• Cast Iron: GG25, GGG40 — facing and external turning
• Tool Steel: H13, D2 — pre-hardened material machining at reduced speeds

Application Map by Operation

Use this matrix to identify the best operational fit for the WNMG080404C insert:

Recommended Cutting Conditions

Start with these parameters and fine-tune based on machine rigidity, workpiece condition, and required surface finish:

Note: Reduce cutting speed by 15-20% for interrupted cuts or less rigid setups. Use coolant for stainless steel and alloy steel applications to extend tool life.

Operating Guidelines

• Tool Overhang: Minimize overhang to reduce vibration and improve surface finish. Use the shortest possible toolholder.
• Insert Seating: Ensure the insert pocket is clean and free of chips before seating. Torque to manufacturer specifications.
• Coolant: High-pressure coolant (70+ bar) is recommended for chip evacuation in deep cavities and bore operations.
• Edge Preparation: The WNMG080404C features a honed T-land edge preparation for enhanced edge strength and chipping resistance.
• Index Frequency: Index the insert when flank wear reaches 0.3 mm or when surface finish degrades beyond specification.
• Storage: Store inserts in original packaging away from direct sunlight and moisture to preserve coating integrity.

Toolholder Compatibility

The WNMG080404C is compatible with the following standard ISO toolholder families:

Packaging & Ordering Information

• Packaging Quantity: 10 pieces per box
• Individual Packaging: Each insert is protected in a plastic blister pocket with anti-corrosion VCI film
• Outer Packaging: Kyocera branded cardboard box with product barcode and traceability label
• Minimum Order: 1 box (10 inserts)
• Lead Time: Stock items ship within 24 hours; non-stock items within 5-7 business days
• Warranty: Full manufacturer warranty against defects in material and workmanship

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