ZCC.CT CNMG190608-PM YBM251 Carbide Turning Inserts for Stainless Steel
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ZCC.CT CNMG190608-PM YBM251: Heavy-Duty Stainless Steel Solution
Product Overview
The ZCC.CT CNMG190608-PM YBM251 is an industrial-grade turning insert engineered for the M-group (Stainless Steel) and heat-resistant alloys. Utilizing the YBM251 grade—a specialized CVD-coated substrate—it delivers an exceptional balance of wear resistance and edge strength. The PM (Medium-Duty) chipbreaker is designed for stable chip evacuation, effectively preventing the "gummy" build-up typical of stainless steel machining, even during high-depth cuts.
Core Advantages
- Robust 19mm Edge: Designed for large workpieces, providing the mass and heat dissipation required for heavy-duty CNC turning.
- YBM251 Toughness Grade: A specialized sub-micron substrate with multi-layer CVD coating for superior performance in interrupted cuts.
- Precision PM Geometry: Optimized cutting edge strength prevents chipping while maintaining low cutting forces.
- High Heat Resistance: Advanced TiCN + Al2O3 coating ensures long tool life in high-temperature machining zones.
Technical Specifications
ISO Model Decoding
80° Rhombic
0° Relief
Tolerance
With Hole
19.3mm Edge
6.35mm Thick
0.8mm Rad
Medium Duty
| Standard | Model Designation | I.C. (Inscribed Circle) |
|---|---|---|
| Metric (ISO) | CNMG190608-PM | 19.05 mm |
| Imperial (ANSI) | CNMG 642-PM | 3/4" |
Recommended Cutting Parameters
| Workpiece Material | Speed (Vc) m/min | Feed (fn) mm/rev |
|---|---|---|
| Stainless Steel (304/316) | 140 - 240 | 0.15 - 0.55 |
| Duplex Stainless Steel | 80 - 160 | 0.20 - 0.50 |
Directly Compatible Holders:
Applications & Compatibility
Engineered for high-torque CNC lathes and large-scale manufacturing components. Ideal for the Oil & Gas, Shipbuilding, and Large-Scale Valve industries. Fully compatible with ISO-standard 19-size turning tool holders on machines from Mazak, DMG Mori, Okuma, and Doosan.
ZCC.CT Grade Choice (Stainless Steel)
| Grade | Condition | Advantage |
|---|---|---|
| YBM151 | Finishing / High Speed | Surface Finish |
| YBM251 | General / Interrupted | Balanced Toughness |
Why Machinists Trust ZCC.CT
ZCC.CT is a world-class leader in cemented carbide production. We deliver Tier-1 quality with factory-direct competitive pricing, ensuring your CNC operations remain profitable and precise.
"Stability on Large Shafts"
"Used the CNMG1906 for 316L large shafts. The stability of the 19mm edge is night and day compared to smaller inserts."
— Mark J., USA
"Excellent Chip Control"
"The PM chipbreaker works wonders on gummy duplex stainless. No bird-nesting issues at all."
— Enzo R., Italy
"Sehr Zuverlässig"
"Gute Standzeit bei unterbrochenem Schnitt. YBM251 ist unser Standard für Edelstahl."
— Stefan B., Germany
Frequently Asked Questions
Q: Can this be used for dry machining?
A: While the CVD coating is heat-resistant, we highly recommend using high-pressure coolant when machining stainless steel to prevent work hardening and edge build-up.
Q: What is the difference between YBM251 and YBC251?
A: YBM series is optimized for Stainless Steel and Superalloys, whereas YBC is the primary choice for Steel (ISO P).
Q: Does this fit a standard 16-size holder?
A: No, this is a 19-size insert (CNMG 642) and requires a 19-series tool holder (e.g., MCLNR 3232P19).
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.