1. Product Overview

The Kyocera TNGG160408AH KW10 Grade Uncoated Carbide Indexable Turning Insert is a precision-engineered cutting tool manufactured in Japan. Designed specifically for Boring, Chamfering, Copying, External Turning, Facing, Up Facing, this 60 degree triangle insert delivers excellent surface quality, long tool life, and minimal vibration across high-volume production environments. With 6 usable cutting edges, it offers exceptional cost-per-edge efficiency for CNC turning centers and Swiss-type lathes.

The TNGG160408AH features a 1/32" nose radius and a 3/16" thickness, optimized for boring operations where dimensional accuracy and surface integrity are paramount. The uncoated KW10 substrate provides superior chemical stability and minimizes built-up edge when machining non-ferrous and cast iron materials.

2. ISO Designation Breakdown

The ISO nomenclature follows the standard ISO 1832 coding system for indexable inserts:

3. Engineering Dimensions & Geometry

Precision-ground geometry ensures repeatable indexing and consistent cutting performance:

4. Grade Details — Key Grade Characteristics

KW10 is a premium uncoated fine-grain tungsten carbide grade falling within the ISO K10/K20 application range. It is engineered specifically for machining materials that produce short chips and require high cutting-edge integrity.

• Substrate: Ultra-fine WC-Co grain structure (sub-micron) for high hardness and wear resistance
• Co Content: Optimized cobalt binder (≈6%) balancing hardness and toughness
• Hardness: HRA 91.5 – 92.0, providing excellent edge stability at elevated speeds
• Coating: None (uncoated) — ideal for non-ferrous materials where chemical affinity must be minimized
• Color Code: Natural carbide silver-gray finish
• Primary ISO Group: K10 (cast iron, non-ferrous metals, non-metallic materials)

5. Grade Comparison Matrix

Select the optimal grade for your workpiece material and machining strategy:

6. Chipbreaker Profile

The AH (Sharp Edge / Non-Ferrous) chipbreaker geometry on the TNGG160408AH is specifically designed for excellent surface quality operations in stable machining conditions.

• Land Width: Narrow polished land for minimal friction and reduced built-up edge
• Rake Angle: Positive rake design for low cutting forces and excellent chip flow
• Chip Groove: Optimized groove depth for controlled chip curling and safe evacuation
• Edge Preparation: Sharp cutting edge (no T-land) for maximum surface quality on non-ferrous materials
• Suitability: Best for continuous cuts, light to medium depths of cut, and high-speed finishing

7. Recommended Applications & Workpiece Materials

The KW10 grade combined with the 60 degree triangle geometry makes the TNGG160408AH ideally suited for the following material groups:

• Gray Cast Iron (GG/GJL): Excellent for continuous and interrupted cuts; high wear resistance prevents crater formation
• Nodular / Ductile Cast Iron (GGG/GJS): Stable cutting with good edge life; recommended for medium speeds
• Aluminum & Aluminum Alloys: Superior surface finish due to uncoated edge preventing material adhesion
• Copper & Copper Alloys: Mirror-finish capability on continuous profiles; minimal burr formation
• Brass & Bronze: Long tool life with consistent dimensional accuracy; ideal for high-volume production
• Titanium Alloys: Suitable for light finishing passes; low thermal conductivity requires adequate coolant
• Plastics & Composites: Clean shearing action; no delamination on fiber-reinforced materials
• Non-Metallic Materials: Ceramics, graphite, and carbon-fiber composites

8. Application Map by Operation

Performance rating for each supported machining operation:

9. Recommended Cutting Conditions

Starting parameters for stable machining setups. Adjust based on machine rigidity and coolant delivery:

10. Operating Guidelines

To maximize tool life and part quality with the TNGG160408AH, observe the following best practices:

• Toolholder Selection: Use precision toolholders with runout ≤ 0.01 mm to maintain consistent edge engagement
• Insert Seating: Ensure the insert pocket is clean and free of chip debris before indexing; torque to manufacturer specification
• Coolant Delivery: Direct coolant to the cutting zone for effective chip flushing and temperature control
• Speed Ramp: Start at the lower end of the recommended Vc range and increase gradually while monitoring tool wear
• Edge Inspection: Inspect edges after each indexing cycle; replace immediately if chipping or thermal cracking is observed
• Workpiece Preparation: Minimize scale and casting skin on cast iron to reduce abrasive wear on the cutting edge
• Rigidity: Ensure workpiece clamping and tool overhang are optimized to suppress vibration and chatter

11. Toolholder Compatibility

The TNGG160408AH is designed for use with standard ISO negative-insert toolholders. Compatible holder families include:

• Recommended Series: STGCR, STFCN, STJCR, MTJNR series toolholders
• Approach Angle: 60° triangle negative inserts require 93° toolholder approach angles
• Clamping: Lever-lock or top-clamp systems (depending on holder design)
• Insert Seat: Negative pocket with 0° inclination for neutral rake presentation
• Shank Size: Compatible with 16×16 mm, 20×20 mm, 25×25 mm, and 32×32 mm shanks

Always verify holder pocket geometry and seat angle match the TNGG insert specification before mounting.

12. Packaging & Ordering Information

Individually packed in anti-static blister packs of 10 inserts per pack. Minimum order quantity: 10 inserts (1 pack). Bulk orders available in sealed master cartons of 100 inserts.

• Manufacturer: Kyocera Precision Tools
• MPN: TWE04413
• ISO Code: TNGG160408AH
• ANSI Code: TNGG332AHKW10
• Grade: KW10
• Coating: Uncoated
• Country of Origin: Japan
• Unit Weight: 0.082 kg (approximate per insert)

13. Catalog Meta Data

All specifications are subject to standard manufacturing tolerances. For application-specific recommendations, contact Kyocera technical support or consult the latest Kyocera Turning Tools catalog.