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Tungaloy DCGT11T302FN-JS SH730 Precision Finishing Turning Insert

Tungaloy DCGT11T302FN-JS SH730 Precision Finishing Turning Insert

$98.85 USD
Tungaloy DCGT11T302FN-JS SH730 Turning Insert High-Precision Finishing Master | SH730 Wear-Resistance PVD | Made in Japan What is the best carbide insert for high-speed finishing of stainless steel? The Tungaloy...
Tungaloy DCGT11T304FN-JS SH725 Precision Finishing Turning Insert

Tungaloy DCGT11T304FN-JS SH725 Precision Finishing Turning Insert

$89.66 USD
Tungaloy DCGT11T304FN-JS SH725 Turning Insert Precision Finishing Master | Ultra-Hard SH725 PVD | Made in Japan What is the most reliable carbide insert for finishing stainless steel parts? The Tungaloy...
Tungaloy DCGT11T302FR-J10 SH725 Precision Finishing Turning Insert

Tungaloy DCGT11T302FR-J10 SH725 Precision Finishing Turning Insert

$114.94 USD
Tungaloy DCGT11T302FR-J10 SH725 Turning Insert Ultra-Precision Finishing | SH725 PVD Toughness | Made in Japan What is the best carbide insert for finishing small stainless steel parts? The Tungaloy DCGT11T302FR-J10...
Tungaloy DCGT11T302FN-JS SH725 Precision Finishing Turning Insert

Tungaloy DCGT11T302FN-JS SH725 Precision Finishing Turning Insert

$89.66 USD
Tungaloy DCGT11T302FN-JS SH725 Turning Insert High-Precision Finishing Master | SH725 PVD Grade | Made in Japan What is the best insert for mirror-finish turning on stainless steel? The Tungaloy DCGT11T302FN-JS...
Tungaloy DCMT11T308-PS T9125 CVD Coated Carbide Turning Insert for Steel

Tungaloy DCMT11T308-PS T9125 CVD Coated Carbide Turning Insert for Steel

$82.76 USD
Tungaloy DCMT11T308-PS T9125 Turning Insert Professional Steel Machining | Premium T9125 CVD Grade | Made in Japan What is the most stable insert for high-feed steel finishing? The Tungaloy DCMT11T308-PS...
Tungaloy DCMT11T304-PS T9125 CVD Coated Carbide Turning Insert

Tungaloy DCMT11T304-PS T9125 CVD Coated Carbide Turning Insert

$82.76 USD
Tungaloy DCMT11T304-PS T9125 Turning Insert High-Efficiency Steel Machining | Premium T9125 CVD Grade | Made in Japan What is the most reliable insert for finishing carbon and alloy steel? The...
Tungaloy DCMT070204-PS T9125 CVD Coated Carbide Turning Insert for Steel

Tungaloy DCMT070204-PS T9125 CVD Coated Carbide Turning Insert for Steel

$64.56 USD
Tungaloy DCMT070204-PS T9125 Turning Insert High-Efficiency Steel Turning | Premium T9125 CVD Grade | Made in Japan What is the best carbide insert for high-speed steel finishing? The Tungaloy DCMT070204-PS...
Tungaloy DCMT070202-PS T9125 CVD Coated Carbide Turning Insert

Tungaloy DCMT070202-PS T9125 CVD Coated Carbide Turning Insert

$64.56 USD
Tungaloy DCMT070202-PS T9125 Turning Insert High-Efficiency Steel Machining | Premium T9125 CVD Grade | Made in Japan What is the best carbide insert for high-speed steel finishing? The Tungaloy DCMT070202-PS...
Tungaloy DCMT11T308-PS T9115 CVD Coated Carbide Turning Insert for Steel

Tungaloy DCMT11T308-PS T9115 CVD Coated Carbide Turning Insert for Steel

$85.06 USD
Tungaloy DCMT11T308-PS T9115 Turning Insert High-Speed Steel Finishing Expert | Premium T9115 CVD | Made in Japan What is the best insert for stable high-speed steel finishing? The Tungaloy DCMT11T308-PS...
Tungaloy DCMT11T304-PS T9115 CVD Coated Carbide Turning Insert for Steel

Tungaloy DCMT11T304-PS T9115 CVD Coated Carbide Turning Insert for Steel

$85.06 USD
Tungaloy DCMT11T304-PS T9115 Turning Insert High-Speed Steel Finishing Master | Premium T9115 CVD | Made in Japan What is the best insert for high-speed finishing of carbon steel? The Tungaloy...
Tungaloy DCMT070204-PS T9115 CVD Coated Turning Insert for Steel Finishing

Tungaloy DCMT070204-PS T9115 CVD Coated Turning Insert for Steel Finishing

$64.56 USD
Tungaloy DCMT070204-PS T9115 Turning Insert High-Speed Steel Finishing Specialist | Premium T9115 CVD | Made in Japan How do I improve tool life during high-speed steel turning? The Tungaloy DCMT070204-PS...
Tungaloy DCMT11T308-PS NS9530 Cermet Turning Insert for High-Gloss Finishing

Tungaloy DCMT11T308-PS NS9530 Cermet Turning Insert for High-Gloss Finishing

$52.87 USD
Tungaloy DCMT11T308-PS NS9530 Turning Insert High-Stability Finishing Master | Premium NS9530 Cermet | Made in Japan How do I achieve a stable mirror finish on carbon steel? The Tungaloy DCMT11T308-PS...
Tungaloy DCMT11T304-PS NS9530 Precision Cermet Turning Insert for Steel

Tungaloy DCMT11T304-PS NS9530 Precision Cermet Turning Insert for Steel

$52.87 USD
Tungaloy DCMT11T304-PS NS9530 Turning Insert The High-Gloss Finishing Specialist | Premium NS9530 Cermet | Made in Japan How do I achieve a mirror finish on steel turning parts? The Tungaloy...
Tungaloy DCMT11T304-24 NS9530 Precision Cermet Turning Insert for Steel

Tungaloy DCMT11T304-24 NS9530 Precision Cermet Turning Insert for Steel

$49.43 USD
Tungaloy DCMT11T304-24 NS9530 Turning Insert The Ultimate High-Gloss Specialist | Premium NS9530 Cermet | Made in Japan What is the best cermet insert for high-speed steel finishing? The Tungaloy DCMT11T304-24...
Tungaloy DCMT11T302-PS NS9530 Precision Cermet Turning Insert

Tungaloy DCMT11T302-PS NS9530 Precision Cermet Turning Insert

$52.87 USD
Tungaloy DCMT11T302-PS NS9530 Turning Insert High-Gloss Finishing Master | Premium NS9530 Cermet | Made in Japan How do I get a mirror finish on carbon steel parts? The Tungaloy DCMT11T302-PS...
Tungaloy DCMT11T302-24 NS9530 Precision Cermet Turning Insert

Tungaloy DCMT11T302-24 NS9530 Precision Cermet Turning Insert

$49.43 USD
Tungaloy DCMT11T302-24 NS9530 Turning Insert Mirror Finish Specialist | Premium NS9530 Cermet | Made in Japan How do I get a mirror finish on carbon steel parts? The Tungaloy DCMT11T302-24...
Tungaloy DCMT070208-PS NS9530 Cermet Turning Insert for Steel Finishing

Tungaloy DCMT070208-PS NS9530 Cermet Turning Insert for Steel Finishing

$39.28 USD
Tungaloy DCMT070208-PS NS9530 Turning Insert High-Stability Finishing Master | Premium NS9530 Cermet | Made in Japan How do I achieve a stable mirror finish on carbon steel? The Tungaloy DCMT070208-PS...
Tungaloy DCMT070204-PS NS9530 Cermet Turning Insert for Steel Finishing

Tungaloy DCMT070204-PS NS9530 Cermet Turning Insert for Steel Finishing

$39.28 USD
Tungaloy DCMT070204-PS NS9530 Turning Insert Mirror Finish Specialist | Advanced NS9530 Cermet | Made in Japan What is the best cermet insert for high-gloss steel finishing? The Tungaloy DCMT070204-PS NS9530...
Tungaloy DCMT070204-24 NS9530 Cermet Turning Insert for Steel Finishing

Tungaloy DCMT070204-24 NS9530 Cermet Turning Insert for Steel Finishing

$39.28 USD
Tungaloy DCMT070204-24 NS9530 Turning Insert High-Speed Steel Finishing Specialist | Premium Cermet Grade | Made in Japan What is the best insert for achieving a mirror finish on carbon steel?...
Tungaloy DCMT070202-PS NS9530 Precision Cermet Turning Insert

Tungaloy DCMT070202-PS NS9530 Precision Cermet Turning Insert

$39.28 USD
Tungaloy DCMT070202-PS NS9530 Turning Insert Ultra-Fine Finishing Master | Premium NS9530 Cermet | Made in Japan How can I achieve a high-gloss finish on steel without polishing? The Tungaloy DCMT070202-PS...
Tungaloy DCMT11T304-PS AH725 PVD Coated Carbide Turning Insert

Tungaloy DCMT11T304-PS AH725 PVD Coated Carbide Turning Insert

$71.26 USD
Tungaloy DCMT11T304-PS AH725 Turning Insert Premium PVD Coated Specialist | Versatile AH725 Grade | Made in Japan What is the most reliable insert for finishing steel and stainless steel? The...
Tungaloy DCMT11T302-PS AH725 PVD Coated Carbide Turning Insert

Tungaloy DCMT11T302-PS AH725 PVD Coated Carbide Turning Insert

$71.26 USD
Tungaloy DCMT11T302-PS AH725 Turning Insert High-Precision PVD Specialist | Premium AH725 Grade | Made in Japan What is the best insert for high-precision stainless steel finishing? The Tungaloy DCMT11T302-PS AH725...
Tungaloy DCMT070204-PS AH725 PVD Coated Carbide Turning Insert

Tungaloy DCMT070204-PS AH725 PVD Coated Carbide Turning Insert

$51.92 USD
Tungaloy DCMT070204-PS AH725 Turning Insert Versatile PVD Coated Specialist | Premium AH725 Grade | Made in Japan What is the best insert for finishing both steel and stainless steel? The...
Tungaloy DCGT11T304N-JS AH725 Precision Finishing Turning Insert

Tungaloy DCGT11T304N-JS AH725 Precision Finishing Turning Insert

$89.66 USD
Tungaloy DCGT11T304N-JS AH725 Turning Insert Precision Finishing Master | AH725 Multi-Purpose PVD | Made in Japan What is the most reliable insert for finishing steel and stainless steel? The Tungaloy...
Tungaloy DCGT11T302N-JS AH725 Precision Finishing Turning Insert

Tungaloy DCGT11T302N-JS AH725 Precision Finishing Turning Insert

$89.66 USD
Tungaloy DCGT11T302N-JS AH725 Turning Insert Universal Finishing Specialist | Ultra-Tough AH725 PVD | Made in Japan What is the best carbide insert for finishing stainless steel and sticky alloys? The...
Tungaloy DCGT11T302FR-J10 J740 Precision Finishing Turning Insert

Tungaloy DCGT11T302FR-J10 J740 Precision Finishing Turning Insert

$124.32 USD
Tungaloy DCGT11T302FR-J10 J740 Turning Insert Precision Finishing Master | Ultra-Sharp J10 Geometry | Made in Japan What is the best insert for high-precision finishing on small steel parts? The Tungaloy...
Tungaloy DCGT11T301N-JS AH725 Precision Finishing Turning Insert

Tungaloy DCGT11T301N-JS AH725 Precision Finishing Turning Insert

$99.02 USD
Tungaloy DCGT11T301N-JS AH725 Turning Insert Universal Finishing Specialist | Ultra-Tough AH725 PVD | Made in Japan What is the best carbide insert for finishing stainless steel and sticky alloys? The...
Tungaloy DCGT11T301FR-J10 J740 Precision Finishing Turning Insert

Tungaloy DCGT11T301FR-J10 J740 Precision Finishing Turning Insert

$124.31 USD
Tungaloy DCGT11T301FR-J10 J740 Turning Insert High-Precision Finishing Expert | Ultra-Sharp J10 Geometry | Made in Japan What is the best insert for ultra-fine surface finishing in precision turning? The Tungaloy...
Tungaloy DCGT070202FR-J10 J740 Precision Finishing Turning Insert

Tungaloy DCGT070202FR-J10 J740 Precision Finishing Turning Insert

$109.39 USD
Tungaloy DCGT070202FR-J10 J740 Turning Insert Precision Finishing Expert | Ultra-Sharp J10 Geometry | Made in Japan What is the best carbide insert for precision finishing on small parts? The Tungaloy...
Tungaloy EPGT040104L-W08 GH110 PVD Coated Carbide Turning Insert

Tungaloy EPGT040104L-W08 GH110 PVD Coated Carbide Turning Insert

$109.56 USD
Tungaloy EPGT040102L-W08 GH110 Boring Insert High-Precision PVD Coated Carbide | Industrial GH110 Grade | Made in Japan What is the most durable insert for small diameter precision boring? The Tungaloy...
Tungaloy EPGT040102L-W08 GH110 Coated Carbide Turning Insert for Precision Boring

Tungaloy EPGT040102L-W08 GH110 Coated Carbide Turning Insert for Precision Boring

$109.56 USD
Tungaloy EPGT040102L-W08 GH110 Boring Insert High-Precision PVD Coated Carbide | Industrial GH110 Grade | Made in Japan What is the most durable insert for small diameter precision boring? The Tungaloy...
Tungaloy EPGT040102L-J08 J740 Coated Carbide Turning Insert for Precision Boring

Tungaloy EPGT040102L-J08 J740 Coated Carbide Turning Insert for Precision Boring

$144.05 USD
Tungaloy EPGT040102L-J08 J740 Boring Insert High-Performance PVD Coated J740 | Stainless Steel Specialist | Made in Japan What is the most stable insert for boring small holes in stainless steel?...
Tungaloy EPGT040104L-W08 NS9530 Cermet Turning Insert for High Precision Boring

Tungaloy EPGT040104L-W08 NS9530 Cermet Turning Insert for High Precision Boring

$84.28 USD
Tungaloy EPGT040104L-W08 NS9530 Cermet Insert High-Speed Precision Boring | Premium NS9530 Cermet Grade | Made in Japan What is the best cermet insert for small diameter mirror-finish boring? The Tungaloy...
Tungaloy EPGT040102L-W08 NS9530 Cermet Turning Insert for Precision Boring

Tungaloy EPGT040102L-W08 NS9530 Cermet Turning Insert for Precision Boring

$84.28 USD
Tungaloy EPGT040102L-W08 NS9530 Cermet Insert Ultra-Precision Boring | Premium NS9530 Cermet | Crafted in Japan What is the best boring insert for high-precision small hole finishing? The Tungaloy EPGT040102L-W08 NS9530...
Tungaloy SCMT09T308-PS T9115 Square Carbide Turning Insert for Steel Machining

Tungaloy SCMT09T308-PS T9115 Square Carbide Turning Insert for Steel Machining

$72.61 USD
Tungaloy SCMT09T308-PS T9115 Insert High-Speed Steel Finishing | -PS Precision Breaker | T9115 Premium CVD Grade What makes SCMT09T308-PS the best choice for steel finishing? The Tungaloy SCMT09T304-PS T9115 is...
Tungaloy SCMT09T304-PS T9115 Square Carbide Turning Insert for Steel

Tungaloy SCMT09T304-PS T9115 Square Carbide Turning Insert for Steel

$72.61 USD
Tungaloy SCMT09T304-PS T9115 Insert High-Speed Steel Machining | -PS Precision Breaker | T9115 CVD Grade What is the best carbide insert for high-speed finishing of steel? The Tungaloy SCMT09T304-PS T9115...
Tungaloy SCMT120404-24 T9125 Square Carbide Turning Insert for Steel

Tungaloy SCMT120404-24 T9125 Square Carbide Turning Insert for Steel

$90.80 USD
Tungaloy SCMT120404-24 T9125 Insert High-Efficiency Steel Turning | 24 Precision Breaker | Premium T9125 CVD Grade What is the best carbide insert for high-speed steel turning? The Tungaloy SCMT120404-24 T9125...
Tungaloy SCMT09T308-PS T9125 Square Carbide Turning Insert for Steel

Tungaloy SCMT09T308-PS T9125 Square Carbide Turning Insert for Steel

$72.61 USD
Tungaloy SCMT09T308-PS T9125 Insert Reliable Steel Machining | -PS Precision Breaker | T9125 Versatile CVD Grade What is the most durable carbide insert for general steel finishing? The Tungaloy SCMT09T308-PS...
Tungaloy SCMT09T304-PS T9125 Square Carbide Turning Insert for Steel

Tungaloy SCMT09T304-PS T9125 Square Carbide Turning Insert for Steel

$72.61 USD
Tungaloy SCMT09T304-PS T9125 Insert General Purpose Steel Machining | -PS Precision Breaker | T9125 CVD Grade What is the most reliable insert for general steel finishing? The Tungaloy SCMT09T304-PS T9125...
Tungaloy SCMT09T304-24 T9125 Carbide Turning Insert for Steel

Tungaloy SCMT09T304-24 T9125 Carbide Turning Insert for Steel

$74.91 USD
Tungaloy SCMT09T304-24 T9125 Insert High-Speed Steel Turning | 24 Precision Breaker | Premium T9125 CVD Grade What is the best carbide insert for high-speed steel turning? The Tungaloy SCMT09T304-24 T9125...
Tungaloy SCMT09T308-PS AH725 Square PVD Carbide Turning Insert

Tungaloy SCMT09T308-PS AH725 Square PVD Carbide Turning Insert

$62.26 USD
Tungaloy SCMT09T308-PS AH725 Insert Reliable Steel & Stainless Turning | -PS Chipbreaker | AH725 PVD Grade What is the best PVD insert for machining stainless and alloy steel? The Tungaloy...
Tungaloy SCMT09T304-PS AH725 PVD Coated Carbide Turning Insert

Tungaloy SCMT09T304-PS AH725 PVD Coated Carbide Turning Insert

$62.26 USD
Tungaloy SCMT09T304-PS AH725 Insert Multi-Purpose Turning | -PS Precision Breaker | Premium AH725 PVD Grade What is the most versatile PVD insert for steel and stainless? The Tungaloy SCMT09T304-PS AH725...
SCMT120408-24 NS9530 (10pcs)

SCMT120408-24 NS9530 (10pcs)

$44.91 USD
Cermet :NS9530  Designation:SCMT120408-24 NS9530 Square, 90° ,With hole Positive: 7°  , Corner radius:0.8 Steel:(Continuous cutting,Light interrupted cutting) Cast iron:(Continuous cutting,Light interrupted cutting) Garde:NS9530  Coating:Main composition (Uncoated)Feature:High fracture resistance,- Suitable for...
Tungaloy SCMT120404-24 NS9530 Square Cermet Turning Insert for Steel

Tungaloy SCMT120404-24 NS9530 Square Cermet Turning Insert for Steel

$59.77 USD
Tungaloy SCMT120404-24 NS9530 Insert Mirror Steel Finishing | 24 Precision Breaker | NS9530 Cermet Grade How to achieve a mirror finish on steel using cermet inserts? The Tungaloy SCMT120404-24 NS9530...
Tungaloy SCMT09T308-PS NS9530 Square Cermet Turning Insert for Steel

Tungaloy SCMT09T308-PS NS9530 Square Cermet Turning Insert for Steel

$42.72 USD
Tungaloy SCMT09T308-PS NS9530 Insert High-Gloss Steel Finishing | -PS Precision Breaker | NS9530 Cermet Grade What is the best cermet insert for mirror finishes on steel? The Tungaloy SCMT09T308-PS NS9530...
Tungaloy SCMT09T302-24 NS9530 Square Cermet Turning Insert

Tungaloy SCMT09T302-24 NS9530 Square Cermet Turning Insert

$46.17 USD
Tungaloy SCMT09T302-24 NS9530 Insert Precision Steel Finishing | 24 Chipbreaker | Premium NS9530 Cermet Grade What is the best cermet insert for precision steel finishing? The Tungaloy SCMT09T302-24 NS9530 is...
Tungaloy SCMT070204-24 NS9530 Cermet Turning Insert for Steel Finishing

Tungaloy SCMT070204-24 NS9530 Cermet Turning Insert for Steel Finishing

$45.02 USD
Tungaloy SCMT070204-24 NS9530 Insert High-Speed Steel Finishing | 24 Chipbreaker | Premium NS9530 Cermet Grade What is the best cermet insert for a mirror finish on steel? The Tungaloy SCMT070204-24...
Tungaloy RCMT0803MO-61 TH10 Round Carbide Insert for Aluminum & Copper

Tungaloy RCMT0803MO-61 TH10 Round Carbide Insert for Aluminum & Copper

$55.54 USD
Tungaloy RCMT0803MO-61 TH10 Insert Non-Ferrous Precision | 61 Finishing Breaker | Sub-Micron TH10 Grade Which round insert provides a mirror finish on aluminum parts? The Tungaloy RCMT0803MO-61 TH10 is a...

Tungaloy Positive Turning Inserts Collection | CCMT DCMT VBMT SCMT TCMT

Tungaloy Positive Turning Inserts Collection

Low Cutting Force | High-Precision Finishing | Professional CNC Solutions

Which positive insert is best for minimizing vibration and achieving high-precision internal bores?

The Tungaloy Positive Turning Insert series is engineered for applications where reducing cutting resistance is critical. Unlike negative inserts, positive geometries (7° or 5° relief angles) feature a sharp cutting edge that "slices" through material rather than pushing it. This makes them the industry standard for internal boring, machining slender workpieces, and achieving superior surface finishes on low-rigidity machines. This collection includes all major ISO shapes—CCMT, DCMT, VBMT, TCMT, and SCMT—available in Tungaloy’s world-class NS9530 Cermet for mirror finishes and T9200 Premium Carbide for high-speed steel turning.

Understanding Positive Insert Nomenclature

C/D/V/T
Shape
C / P
7°/11° Relief
M / G
Tolerance
T / W
Hole/Fixing
09/11/16
Size
03/04
Thickness
04/08
Radius

Anti-Vibration Geometry

The positive relief angle drastically reduces radial forces, preventing chatter and "singing" during deep internal boring operations.

NS9530 Gloss Technology

Our Cermet grade remains chemically inert at high temperatures, preventing metal adhesion and ensuring a glossy finish on steel workpieces.

Premium Chipbreakers

From the -PF for fine finishing to -PS for general light-medium turning, these breakers ensure short, manageable chips even in "stringy" materials.

Cross-Reference: Metric vs. Imperial Models

ISO Metric ANSI Imperial Nose Radius Primary Use
CCMT 09T304 CCMT 32.51 0.4 mm 80° General Turning
DCMT 11T308 DCMT 32.52 0.8 mm 55° Profiling
VBMT 160404 VBMT 331 0.4 mm 35° Deep Profiling

Starting Cutting Data (Steel P)

Finishing (Cermet) Vc: 150 - 450 m/min | f: 0.05 - 0.20 mm/rev
Medium (Carbide) Vc: 120 - 320 m/min | f: 0.10 - 0.30 mm/rev

Matching Boring Bars & Tool Holders

Compatible with S-SCLCR, S-SDUCR, S-SVQBR, and S-STFCR Series

Shop Compatible Internal Boring Bars

Applications

  • Precision internal boring and step machining.
  • Machining of small-diameter shafts and delicate components.
  • High-speed finishing of carbon steel, alloy steel, and stainless.
  • Great for Swiss-type lathes and automatic CNC centers.

Compatibility

Universal ISO standard fit for all brand tool holders. Optimized for performance on high-end machines including Mazak, Haas, Okuma, and DMG Mori.

Tungaloy Material Grade Guide

Grade Type Benefit
NS9530 Cermet Unrivaled Surface Finish (Mirror)
T9215 CVD Carbide Extreme Wear Resistance for Steel
AH725 PVD Carbide High Toughness for Interrupted Cuts

Why Partner With Beyond CNC?

Certified Authentic
Direct Tungaloy Supply
Bulk Inventory
Ready for Global Export
Industry Experts
24/7 Technical Support

Voice of the Machinist

⭐⭐⭐⭐⭐ "Solved my chatter problems" - Mark S., USA
"Was struggling with vibration on a 12" deep bore. Switched to Tungaloy DCMT positive inserts and the finish came out like glass. Beyond CNC delivered overnight."

⭐⭐⭐⭐⭐ "Genuine Quality" - Hans B., Germany
"Verified original Tungaloy stock. The NS9530 grade is the best cermet I have ever used for stainless finishing."

⭐⭐⭐⭐ "Great price for Tungaloy" - G. Russo, Italy
"Hard to find these prices in Europe for authentic Japanese inserts. Very happy with the CCMT collection."

Technical FAQ

Q: Why should I choose positive inserts over negative ones?

A: Positive inserts require less machine horsepower and produce lower cutting forces. They are essential for thin-walled parts and internal boring where deflection is an issue.

Q: What is the difference between 7° (C) and 11° (P) relief angles?

A: 7° is the standard for most turning. 11° provides even more clearance, often used for very small internal bores or soft materials like aluminum.

Q: Can these be used on Stainless Steel?

A: Yes. Use the **AH series** PVD grades or **PC series** for the best performance in stainless to prevent work hardening.

Industrial Tip: Extension Ratios

When boring with **Positive Inserts**, keep your boring bar overhang within **3-4 times the diameter** for steel shanks. If you must go deeper, ensure you use a carbide-reinforced bar to maintain precision. **BEYOND CNC** - Engineering Excellence.

© Technical Specification by Beyond Li - CNC Tooling Technical Director