Tungaloy TNMG160404 / TNMG160408 T5115 CVD Coated Carbide Turning Inserts for Cast Iron - BEYOND

Tungaloy TNMG160404 / TNMG160408 T5115 CVD Coated Carbide Turning Inserts for Cast Iron

$66.47 USD

Price shown is a starting point. Contact us for a precise quote based on your requirements.

DESIGNATION: TNMG160404 T5115

TNMG160404 T5115
TNMG160408 T5115

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Description

Tungaloy TNMG160404 / TNMG160408 T5115 Turning Inserts

High-Stability Cast Iron Machining | Premium T5115 CVD Grade | Japan Original

What is the best carbide grade for machining gray and ductile cast iron?

The Tungaloy TNMG160404/08 T5115 series represents the pinnacle of cast iron turning technology. Engineered with the T5115 CVD coated carbide grade, these inserts are specifically designed to withstand the abrasive nature of gray (FC) and ductile (FCD) cast iron. By combining a thick, wear-resistant coating with a toughened substrate, the T5115 grade offers unparalleled tool life and edge reliability even during high-speed continuous or light interrupted cuts. Whether you need the precision of a 0.4mm radius (04) or the strength of a 0.8mm radius (08), these inserts deliver consistent performance in professional CNC environments.

T5115 CVD Coating

Features a thick Al2O3 layer that provides exceptional heat resistance and wear protection against the abrasive graphite flakes in cast iron materials.

Premium Substrate

The high-toughness carbide substrate prevents sudden edge breakage, making it ideal for the varying densities found in large cast iron workpieces.

Consistent Surface Finish

Tungaloy's specialized post-coating surface treatment reduces friction, leading to improved chip evacuation and a more predictable surface Ra value.

Decoding TNMG 160404/08 Nomenclature

T
Triangular
N
0° Relief
M
Tolerance
G
Double Sided
16
16mm Length
04
4.76mm Thk
04/08
0.4/0.8 Rad

3. Technical Specifications: Metric (ISO) vs. Imperial (ANSI)

Feature Metric (ISO) Imperial (ANSI)
Standard Models TNMG160404 / 08 TNMG 331 / 332
Inscribed Circle (IC) 9.525 mm 3/8"
Thickness (S) 4.76 mm 3/16"
Corner Radius (RE) 0.4 mm / 0.8 mm 1/64" / 1/32"

Recommended Cutting Parameters (Cast Iron)

  • Cutting Speed (Vc): 120 - 450 m/min
  • Feed Rate (f): 0.15 - 0.50 mm/rev
  • Depth of Cut (ap): 1.0 - 4.5 mm

*Note: T5115 is optimized for high-speed machining. Increase cutting speed for better chip control in gray iron.*

4. Primary Applications

  • Turning gray iron casting (FC series).
  • Boring ductile/nodular iron (FCD series).
  • Automotive brake rotors and engine block finishing.
  • High-volume industrial pump and valve housings.

5. Tool Compatibility

Fits all standard ISO/ANSI triangular tool holders. Works perfectly with MTJNR/L, WTJNR/L, and DTGNR/L series tool holders and boring bars.

7. Why Choose CNCHome-Beyond?

100% Genuine
Original Tungaloy Japan
Technical Experts
Technical Director Support
B2B Direct Supply
Professional Sourcing
Global Logistics
Fast International Shipping

Machinist Feedback from the Field

⭐⭐⭐⭐⭐ "Best for Ductile Iron" - Robert T., USA
"T5115 is my go-to for nodular iron pumps. The tool life is double compared to standard PVD grades. Consistent and reliable."

⭐⭐⭐⭐⭐ "Original Quality" - Dieter S., Germany
"Exactly as advertised. Factory sealed boxes. Tungaloy's Japan factory products always deliver the best surface finish."

⭐⭐⭐⭐ "Great Performance" - Chen L., Singapore
"Used the TNMG160408 on brake rotor machining. The 0.8mm radius is very robust. Good chip control at 300 m/min."

⭐⭐⭐⭐⭐ "Reliable B2B Partner" - Kenji O., Japan
"Fast delivery. These are original Japan parts. Highly recommended for any serious CNC workshop."

⭐⭐⭐⭐⭐ "Excellent Price/Quality" - Alistair M., UK
"Sourced these for a long batch run on grey iron casting. The T5115 grade didn't crack once. Great edge strength."

8. FAQ - Cast Iron Machining Support

Q: Why should I use T5115 for cast iron instead of steel grades?

A: Cast iron is highly abrasive. T5115 has a specialized thick Al2O3 CVD coating specifically designed to resist the abrasive wear and heat generated by graphite flakes.

Q: Should I use coolant when turning cast iron?

A: For gray iron, dry machining is often preferred to prevent thermal cracking. However, for ductile iron or heavy roughing, a consistent flow of coolant is recommended.

Q: What is the difference between 160404 and 160408?

A: 160404 (0.4mm radius) is better for finishing and thin-walled parts. 160408 (0.8mm radius) is much stronger for roughing and larger depths of cut.

Tech Tip: T5115 vs. T515 Grade

While **T5115** is optimized for high-speed continuous cutting of gray and ductile iron, choose **T515** if your operation involves heavy interruptions or unstable setups. **Tungaloy Japan** - Engineering excellence for cast iron technology.

© Technical Data by cnchome-beyond.com - Global CNC Tool Authority

Technical FAQ & Buying Guide

Are your carbide inserts interchangeable with major brands like Sandvik, Iscar, or Kennametal?

Absolutely. Our CNC carbide inserts (including CNMG, WNMG, DNMG, and APMT series) are manufactured strictly adhering to international ISO/ANSI specifications. A CNMG 120408 from OYYU BEYOND will flawlessly fit any standard turning tool holder or indexable tool from major global brands like Sandvik Coromant, Kennametal, Iscar, Walter, or SECO, providing a highly cost-effective premium alternative without sacrificing tolerance or tool life.

How do I choose the correct insert grade and chipbreaker for machining Stainless Steel (M) vs. Carbon Steel (P)?

We offer optimized CVD and PVD multi-layer coatings for different ISO material groups:

  • For Carbon/Alloy Steel (ISO P): Choose our thick multi-layer CVD coated grades (e.g., Al2O3 + TiN). They provide exceptional crater wear resistance and thermal barriers during high-speed dry or wet roughing.
  • For Stainless Steel (ISO M): Choose our nano-structured PVD coated grades with sharp, positive chipbreakers (like -TM or -MA). This combination prevents work hardening and effectively controls sticky chips.
What are the recommended cutting speed (Vc) and feed rate (f) parameters to maximize tool life?

The optimal cutting parameters vary depending on the workpiece hardness and operation type:

  • For General Steel Turnings: Recommended cutting speed ($V_c$) ranges from 150 to 280 m/min, with a feed rate ($f$) of 0.15 to 0.45 mm/rev.
  • For Stainless Steel Finishing: Recommended cutting speed ($V_c$) is 120 to 200 m/min, with a feed rate ($f$) of 0.10 to 0.25 mm/rev.Always adjust parameters based on early wear patterns: increase $V_c$ if built-up edge occurs, or reduce $V_c$ if severe flank wear is observed.
Do you offer bulk discounts or wholesale pricing for machine shops and distributors?

Yes, we support machine shops, distributors, and global buyers with tiered wholesale pricing and competitive volume discounts. We also provide OEM custom manufacturing solutions for tool holders and carbide inserts based on your technical drawings. Contact our team to request a quick B2B quotation.

What is your international shipping policy and typical lead time for orders?

We provide secure worldwide express shipping (via DHL, FedEx, and UPS) with specialized, vibration-proof industrial packaging to ensure tools arrive in perfect condition. In-stock items are dispatched within 24-48 hours, while custom or bulk orders typically have a stable lead time of 15-25 days.

How do you guarantee the quality and tolerance precision of your CNC tools?

All our cutting tools and tool holders are manufactured strictly in accordance with ISO 9001 and international industrial standards. Every batch undergoes 100% rigorous quality control testing using high-precision optical measuring equipment to ensure reliable tool life and stable performance in continuous mass production.