ZCC.CT TNMG220412-DM YBC252 Carbide Turning Insert – CVD for Steel Medium Roughing
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TNMG220412-DM YBC252 Tungsten Carbide Turning Insert
Premium CVD coated insert for high-stability steel machining. Features the DM chipbreaker for superior chip control in medium-range cutting.
Product Description
The ZCC.CT TNMG220412-DM YBC252 is a high-performance triangular negative insert designed for versatile steel turning operations. Powered by the YBC252 grade—which combines a high-toughness carbide substrate with a thick Al2O3 and TiCN CVD coating—it offers the perfect balance of wear resistance and impact toughness.
The DM chipbreaker is specifically engineered for medium cutting depths. Its unique geometry allows for stable chip breaking at varying feed rates, making it an ideal "first choice" for carbon steels and alloy steels (ISO P-group materials).
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Technical Specifications
| Attribute | Metric Value | Imperial Equivalent |
|---|---|---|
| Insert Shape | Triangular (60°) | Triangular (60°) |
| Cutting Edge Length (L) | 22.0 mm | 0.866 in |
| Thickness (S) | 4.76 mm | 0.187 in |
| Corner Radius (RE) | 1.2 mm | 0.047 in |
| Hole Diameter (d1) | 5.16 mm | 0.203 in |
Recommended Machining Parameters
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Carbon Steel (P) | 150 - 350 m/min | 0.15 - 0.50 mm/rev |
| Alloy Steel (P) | 120 - 280 m/min | 0.12 - 0.45 mm/rev |
| Cast Steel | 100 - 250 m/min | 0.15 - 0.40 mm/rev |
Why Choose YBC252 Grade?
🔗 Compatible Tool Holders (TNMG22)
💡 Machinist's Tip: Corner Radius & Surface Finish
With a 1.2mm radius, the TNMG220412 is built for stability and higher feed rates. For optimal surface finish, ensure your feed rate (fn) is approximately 1/3 to 1/2 of the corner radius. If vibration occurs in slender workpieces, consider using the 08 radius version or increasing the cutting speed.
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.