ZCC.CT APKT11T312-PM YBM251 Carbide Insert – 11mm Universal Milling R1.2 Steel
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APKT11T312-PM YBM251 ZCC.CT Milling Insert
1.2mm Reinforced Radius | The Premier Solution for Stainless Steel Milling
Product Overview
"Struggling with edge wear and thermal cracking while milling stainless steel?"
The APKT11T312-PM YBM251 is engineered to deliver high productivity in ISO M (Stainless Steel) and ISO P (Steel) materials. The 11mm size is ideal for versatile shoulder milling, while the 1.2mm corner radius provides massive edge stability compared to standard 0.4mm or 0.8mm options. The YBM251 Grade uses a high-performance coating and a fine-grained substrate to resist adhesive wear and thermal shock, ensuring consistent tool life and excellent surface finishes in demanding industrial environments.
Decoding the Model: APKT11T312-PM
90° Parallelogram
11° Clearance Angle
Hole & Chipbreaker
Length (11mm)
Thickness (3.97mm)
Radius (1.2mm)
General Purpose
Core Advantages
- Optimized YBM251 Grade: Superior resistance to flank and crater wear in stainless steel.
- 1.2mm Radius Strength: Reinforced corner geometry minimizes edge chipping during heavy roughing.
- Nano-Coating Technology: Smoother chip evacuation and lower cutting temperature.
- Stable PM Chipbreaker: Reliable performance in both continuous and interrupted cuts.
Common Applications
- Shoulder milling of 304, 316, and Duplex Stainless Steel.
- Machining of alloy steels and mold steels where heat is an issue.
- Face milling and contouring in high-production CNC environments.
- Industrial manufacturing of medical, food-grade, and energy components.
Specifications & Recommended Parameters
| Metric Model | Inch Equivalent | Cutting Speed (Vc) | Feed (fz) |
|---|---|---|---|
| APKT11T312-PM | APKT 0.433" x 0.156" R0.047" | 120 - 240 m/min | 0.10 - 0.22 mm/z |
*Optimal results achieved with internal coolant for stainless steel applications.
Matching Tool Holders
Precision-fit for ZCC.CT and standard 90° indexable milling bodies for 11mm inserts:
ZCC Grade Selection Tip
- YBM251 (This Product): Balanced grade for stainless steel. Excellent stability.
- YBG202: Multi-material PVD grade for smaller components and superalloys.
- YBM253: Tougher grade for heavy interrupted stainless steel roughing.
Why Choose Us?
- ✅ 100% Genuine: Factory-fresh ZCC.CT inserts with verifiable security codes.
- ✅ B2B Technical Support: Expert advice for CNC optimization.
- ✅ Fast Shipping: Global logistics for minimal downtime.
Global Verified Feedback
"The 1.2 radius on an 11 insert is a game-changer. Edge life on 316 stainless is much better than the standard 0.8."
A. Schmidt - Germany"Perfect for our production run. Very stable inserts with great consistency."
T. Wilson - USA"Ottimo rapporto qualità-prezzo. ZCC non delude mai sull'acciaio inossidabile."
M. Ferrari - ItalyFrequently Asked Questions
Yes. 11T3 is the industry standard designation for a thickness of 3.97mm. Some brands label it 1103, but the dimensions are identical for 11-size holders.
A larger radius distributes the cutting force over a broader area, which reduces heat concentration and protects the corner from chipping in tough materials like stainless steel.
Stainless Steel Pro-Tip:
When machining with the YBM251 grade, ensure you are not using too low of a feed rate. Stainless steel work-hardens quickly; keeping the feed high enough to stay under the work-hardened layer from the previous pass will significantly extend your tool life.
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.