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NACHI America
Cermet NAX Series for Milling

Cermet NAX Series for Milling

Product catalog summary

Overview

This document details the technical specifications, material grades, mechanical properties, and performance data for the Nachi NAX series of cermet cutting tool inserts. It serves as a comprehensive guide for selecting appropriate inserts based on geometry, material grade, and machining application.

1. Insert Geometry and Specifications

Shapes: Primarily square and equilateral triangle inserts.
Dimensions & Tolerances: Standard inscribed diameters and thicknesses are provided in metric and inch series with tight tolerances (corner height ±0.005 to ±0.025 mm; thickness ±0.025 mm).
Cutting Edge Forms: Includes sharp, round, angular, and composite edges tailored for different cutting needs.
Relief Angles: Range from 0° to 30°, with common increments at 3°, 5°, 7°, 11°, 15°, 20°, 25°, and 30°, influencing cutting forces and chip flow.
Chip Breakers & Bore Shapes: Options include no chip breaker, single face, double face; bore chamfers vary between 40°–60° and 70°–90°, affecting chip control and insert mounting strength.
Handedness: Inserts are available in right-hand, left-hand, or neutral configurations.
Corner Radius & Cut Angles: Radii from 0 to 2.0 mm with corresponding cut angles (45° to 90°) impact edge strength and surface finish.

2. NAX Series Cermet Grades and Properties

Grade	Specific Gravity (g/cm³)	Hardness (HRA)	T.R.S. (kgf/mm²)	Cutting Application	Key Characteristics
NAX SS	7.15	91.5	200	Milling	High nitrogen content, fine hard grains, excellent anti-chipping, superior wear and heat crack resistance.
NAX LL	7.25	92.0	180	General purpose	Good abrasion resistance at medium speeds, improved toughness over earlier grades.
NAX FF	6.80	92.0	170	Finishing turning	Excellent wear resistance at high and medium speeds.
NAX MM	6.70	92.5	160	Heavy milling/intermittent turning	Highest toughness, ideal for heavy and interrupted cuts.
NAX T	7.25	92.5	150	General purpose turning and milling	Balanced wear resistance and toughness for versatile use.

3. Cutting Performance and Applications

Wear Resistance vs. Toughness: Grades range from high wear resistance (NAX SS) to high toughness (NAX MM, NAX T), allowing selection based on machining demands.
Cutting Conditions: Suitable speeds from 0 to 300 m/min and feeds from 0.05 to 0.25 mm/cut, varying by grade and application.
Performance Comparison: Testing on SCM435 annealed steel shows NAX SS outperforms competitor grades in flank wear and anti-chipping under specified conditions.

4. Targeted Cutting Conditions and Materials

Guidance is provided for selecting NAX grades based on workpiece material types (structural carbon steels, alloy steels, tool steels) and hardness levels (approx. 100 to 450 HB).
Recommended cutting speeds and feeds are tabulated for various materials and grades to optimize tool life and machining quality.

5. Comparative Manufacturer Grade Mapping

The NAX series grades are mapped against equivalent grades from major manufacturers (Sumitomo Electric, Mitsubishi Materials, Tungaloy, Hitachi Tool, Kyocera), illustrating their relative wear resistance, toughness, and application suitability.

6. Additional Notes

Example insert: SNGN120408TN used with 1.5 mm depth of cut under dry cutting conditions.
Information is based on Nachi’s proprietary sintering technology and traditional tool-making expertise.
Electron microscope images reveal microstructural differences among grades, highlighting grain size and hardness variations.

Critical Information Summary

Use NAX SS for milling applications demanding high wear resistance and anti-chipping.
NAX MM and NAX T are preferred for heavy milling and intermittent turning due to superior toughness.
Insert geometry, relief angles, and chip breaker types must be selected to match machining requirements and tool holder compatibility.
Performance data confirms the NAX series’ superior wear and chipping resistance compared to competitor products.

Conclusion

This document serves as a detailed reference for selecting and specifying Nachi’s NAX series cermet milling inserts. It provides essential dimensional data, tolerances, material grades, and performance characteristics to ensure optimal machining results. Users are advised to carefully consider insert geometry, relief angles, chip breaker configurations, and grade selection based on their specific cutting applications.

Catalog excerpts

Material type JIS number Visual appearance Shape Inch Series NAX SS Cermet NAX Series for Milling SDEN 1203AE TNRS SDCN 1504AZ TN SDCN 53P TN SDEN 1504AZ TN SDEN 53P TN SEEN 42P TN SEEN 1203AF TNR SEEN 42P TNR SNEN 43G TN SNKN 43G TN TPCN 2204PD TR(TL) TPCN 43Z TR(TL) TPEN 2204PD TR(TL) TPEN 43Z TR(TL) 0.4 SDEN 42P TNRS SNKN 1204CN TN 45° SDEN 42P TNR SEEN 1203AF TN 1.2 SDEN 42P TN SDEN 1203AE TNR 23° SDEN 1203AE TN SNEN 1204CN TN 0.4 20° TN type NAX LL 23° 3.18 15° 12.7 Metric Series R1 TNR type 20° 45° 1.6 R1.5 1.2 Chamfered corner 20° 23° 0.4 Flat cutting edge 1.2 Section yy-yy 23° yy Section y-y ■Insert identification system 3.18 20° 12.7 Insert shape 0.4 23° Equilateral triangle Tolerance ((mm)) Corner height Inscribed diameter Thickness (m) (d) (s) A C E ±0.005 ±0.013 ±0.025 ±0.025 (2) Relief angle (1) Shape ±0.025 Shape Inscribed diameter Metric Series Inch dimensions Square Triangular Series (mm) No N Single face R No Double face F No W Partial cylindrical bore chamfer 40 to 60° Single face T Yes No B Partial cylindrical bore chamfer 70 to 90° Single face H 06 2 6.35 16 3 9.525 12 22 4 12.70 15 27 5 15.875 19 33 6 19.05 12.7 0.8 25° 90° Regular triangle Negative insert 12.7 2 Insert shape 30° 45° 1.4 (7) Corner configuration (6) Thickness Thickness Metric Series Inch Series (mm) Corner radius Radius (mm) 03 2 3.18 T3 - 3.97 00 0 04 3 4.76 02 Y 0.2 06 4 6.35 04 1 08 2 12 Cutting edge form New number Old number Cut angle Cut angle Flat cutting edge relief angle 0 Metric Series Inch Series (8) Main cutting edge For flat cutting edges Angle Angle F Angle Sharp cutting edge Round cutting edge Angular cutting edge Composite cutting edge (9) Handedness Handedness R (10) Auxiliary Standard in stock Made to order Some items available in stock Left N 1 Right L Insert shape 4.76 11° 15° T P E N 22 04 PD T R S T P E N 4 3 Z T R S Inch series number 0.8 4.76 2 Metric series number Insert shape 90° (5) Cutting length and inscribed diameter (4) Groove/bore (3) Accuracy 11 09 45° Yes/no 1.3 Chip breaker 25° Square Bore 25° N 0° A 3° B 5° C 7° P 11° D 15° E 20° F 25° G 30° O Others Square Negative insert S T 23° Relief angle Insert shape Cermet NAX Series for Milling 4.76 45° End cutting edge 15.875 Insert shape 15° Cut angle κ Flat cutting edge Relief angle α 'n Main cutting edge Standard inscribed diameter TNRS type 23° yy (Flat cutting edge position) Corner height m Relief angle αn y y Thickness S Square Positive insert Standard inscribed diameter d 45° ■Terminology No H 75° A 45° N 0° E 0.4 E 65° D 60° A 3° T 0.8 G 65° C 65° B 5° 3 1.2 P E 75° C 7° 16 4 1.6 Z Others F 85° P 11° 20 5 2.0 G 87° D 15° P 90° E 20° NACHI AMERICA INC. Others F 25° 17500 Twenty-Three Mile Road, Macomb, Michigan, 48044, U.S.A. Phone:+1-586-226-5151 Fax:+1-888-383-8665 URL:http://www.nachiamerica.com/ NACHI EUROPE GmbH Z G 30° Z Others NACHI SINGAPORE PTE. LTD. U.K. BRANCH 45° S NACHI-FUJIKOSHI CORP. (TOKYO HEAD OFFICE) Shiodome Sumitomo Bldg., 1-9-2 Higashi-shinbashi, Minato-ku, Tokyo 105-0021 Phone:+81-(0)3-5568-5240 Fax:+81-(0)3-5568-5236 URL:http://www.nachi-fujikoshi.co.jp No.2 Joo Koon Way, Jurong Town, Singapore 628943, SINGAPORE Phone:+65-65587393 Fax:+65-65587371 Bischofstrasse 99, 47809, Krefeld, GERMANY Phone:+49-(0)2151-65046-0 Fax:+49-(0)2151-65046-90 URL:http://www.nachi.de Unit7, Junction Six Industrial Estate, Electric Avenue, Birmingham B6 7JJ, U.K. Phone:+44-(0)121-250-1890 Fax:+44-(0)121-250-1889 URL:http://www.nachi.co.uk CATALOG NO. S4205E 2008.1.X-SE-SE 4

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Cermet NAX Series for Milling High-performance Cermet materials developed through harmonized technologies The NAX series is developed as a series of Cermet material for cutting tools by Nachi’s original sintering technology and traditional tool making expertise. Cermet has low affinity with steel to make a good cutting surface. There are five different grades of material for various applications. The NAX series Cermet supports a wide range of demands for turning work and milling work. 2μm Grade for milling: NAX SS Cutting application 0.05 0.1 Toughness 92.5 160 150 (mm) General purpose grade...

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