ZCC.CT APKT11T304-PM YBM251 Carbide Insert – 11mm Finish Milling R0.4 Steel
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APKT11T304-PM YBM251 Milling Insert
Premium PVD Coated Carbide for Superior Stainless Steel Processing
Product Overview
"Which milling insert is the best choice for achieving high stability and smooth chip evacuation in 304 or 316 stainless steel?"
The APKT11T304-PM YBM251 is engineered by ZCC.CT specifically to tackle the challenges of M-class (Stainless Steel) materials. Utilizing the YBM251 PVD coating, it combines a fine-grained carbide substrate with an ultra-thin, high-toughness coating layer. The -PM chipbreaker geometry is designed for medium-duty milling, ensuring low cutting forces and preventing built-up edge (BUE) during intensive CNC operations.
Key Features
- 🔹 Superior Heat Resistance: The Nano-PVD coating manages thermal shocks during wet or dry milling.
- 🔹 PM Geometry: Optimized rake angle for reduced friction and high-precision surface finishes.
- 🔹 Tool Life Longevity: High-density carbide substrate resists notch wear and chipping.
- 🔹 ISO Compliance: 100% compatible with global standard milling cutters designed for APKT11T3 inserts.
Technical Specifications
| Parameter | Metric (ISO) | Imperial (ANSI) |
|---|---|---|
| Insert Size | 11 mm | 7/16" |
| Corner Radius | 0.4 mm | 0.0157" |
| Cutting Speed (Vc) | 120 - 220 m/min | 393 - 721 SFM |
| Feed per Tooth (fz) | 0.08 - 0.20 mm/z | 0.003 - 0.008 IPT |
Model Decoder: APKT 11T3 04 -PM
85° Parallelogram
11° Clearance
Tolerance Class
Hole/Chipbreaker
Cutting Edge
3.97mm Thick
0.4mm Radius
Medium Cut
Applications & Compatibility
Workpiece Materials:
Mainly for Stainless Steel (AISI 304, 316, 430). Also suitable for Carbon Steel and Heat Resistant Alloys (Inconel/Titanium) under stable conditions.
Equipment:
CNC Machining Centers, Vertical/Horizontal Milling Machines, and Multi-axis CNC Turn-Mill centers.
Grade Comparison (ZCC.CT Milling)
YBM251 (Current Grade): Specialized for Stainless Steel. Balanced toughness and wear resistance for M-class materials.
YBD152: Targeted for Cast Iron (K-class) milling with high-speed CVD coating.
YBM351: Tougher grade for heavy interrupted cuts in stainless steel or lower cutting speeds.
Why Choose Us?
We are a certified technical director-led operation specializing in ZCC.CT global distribution. We offer 100% genuine products, technical engineering support, and rapid global fulfillment.
"Reliable for 316SS"
"The YBM251 grade is much more stable than the cheaper alternatives we tried. Clean finish." — Mike R., USA
"Top Qualität"
"Sehr gute Standzeit bei der Bearbeitung von Edelstahl. Schneller Versand nach Deutschland." — Klaus H., Germany
"Good performance"
"Ottimo per fresatura su acciaio inox. Prezzo competitivo." — Luca V., Italy
"精度が高い"
"SUS304の加工に最適です。チップの寿命が長くなりました。" — Kenji T., Japan
FAQ - Technical Support
A: While possible, it is not recommended. For aluminum, the 'LC' or 'LH' chipbreaker with an uncoated grade is preferred to prevent stickiness.
A: High-pressure internal coolant is highly recommended for YBM251 to ensure chip evacuation and thermal stability in stainless steel.
A: Yes, as long as the holder is designed for the ISO APKT11T3 standard.
Pro Tip: To avoid work hardening in stainless steel, ensure your feed rate (fz) is never lower than 0.05 mm/z. The YBM251 coating performs best when the chip thickness is consistent.
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.