ZCC.CT TNMG160404-DM YBD252 Carbide Turning Inserts for Cast Iron
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ZCC.CT TNMG160404-DM YBD252
Premium CVD Coated Inserts for Professional Cast Iron Turning
Product Overview
"Which carbide insert grade is most effective for medium machining of Grey and Ductile Cast Iron while resisting abrasive wear?"
The ZCC.CT TNMG160404-DM YBD252 is a double-sided negative triangular insert specifically engineered for ISO K (Cast Iron) materials. Featuring the advanced YBD252 grade—a thick CVD coating combined with a highly wear-resistant substrate—this insert excels in medium-duty turning. The -DM chipbreaker provides a perfect balance between edge strength and chip control, making it the industry standard for machining engine blocks, flywheels, and hydraulic components.
Key Industrial Advantages
Specialized Cast Iron Coating
The thick TiCN + Al2O3 CVD coating is optimized to withstand the abrasive nature of cast iron fibers and graphite particles.
-DM Medium Chipbreaker
Designed for general-purpose medium machining, ensuring stable performance across varying depths of cut.
Economic 6-Edge Design
The negative geometry offers 6 usable cutting edges per insert, significantly reducing the cost-per-part in high-volume production.
Technical Specifications
ISO Designation Decoding
Triangular
0° Relief
Tolerance
Double Sided
16mm Edge
4.76mm Thk
0.4mm Rad
Grade
| Standard | Model Number | Dimensions (I.C / S / R) |
|---|---|---|
| Metric (ISO) | TNMG160404-DM | 9.525mm / 4.76mm / 0.4mm |
| Imperial (ANSI) | TNMG331-DM | 3/8" / 3/16" / 1/64" |
Optimized Cutting Parameters
| Material (ISO K) | Cutting Speed (Vc) m/min | Feed Rate (f) mm/rev |
|---|---|---|
| Grey Cast Iron (GG) | 200 - 400 | 0.15 - 0.45 |
| Ductile Cast Iron (GGG) | 150 - 300 | 0.15 - 0.40 |
Matching Tool Holders (Standard ISO 16 Size):
Primary Applications
- Automotive Industry: Brake discs, engine blocks, and drum brakes.
- Heavy Machinery: Housing components and agricultural machine parts.
- Medium Machining: Ideal for depths of cut (Ap) between 1.0mm and 4.0mm.
Machine Compatibility
Optimized for all major CNC Lathe brands including Haas, Mazak, Doosan, and DMG Mori. Compatible with negative geometry tool holders utilizing the ISO 16 shape clamping system.
ZCC.CT Cast Iron Grade Matrix
| Grade | Application Type | Toughness | Wear Resistance |
|---|---|---|---|
| YBD152 | High Speed / Finish | Standard | Maximum |
| YBD252 (Current) | Medium / General | High | High |
Industrial User Feedback
Best for Ductile Iron
"The YBD252 grade is much more stable than our previous inserts when turning ductile iron housings. Excellent edge life."
— Robert W., USA 🇺🇸Ideal for Brake Discs
"Great chip control with the -DM breaker. We run these on our brake disc line with zero issues."
— Marco G., Italy 🇮🇹優れた耐摩耗性 (Great Wear Resistance)
"Consistent dimensions over long runs in Grey Cast Iron. Very impressed with the CVD coating quality."
— Tanaka K., Japan 🇯🇵Technical FAQ
Q: Can I use YBD252 for steel turning?
A: While it can cut steel, the YBD series is specifically optimized for the graphite structure of Cast Iron. For steel, we strongly recommend the YBC series for better performance.
Q: What is the benefit of the -DM breaker for cast iron?
A: Cast iron often produces "crumbly" chips. The -DM geometry helps stabilize the cut and protect the edge from micro-chipping caused by the heterogeneous nature of iron castings.
Technical FAQ & Buying Guide
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.
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.
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.
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.
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.
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.