ZCC.CT APKT150412-KM YBG302 Carbide Insert – 15mm Positive Milling R1.2 for Steel
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APKT150412-KM YBG302 ZCC.CT Milling Insert
High-Performance Roughing for Cast Iron & Alloy Steels
Product Overview
"Which insert is best for heavy interrupted milling in Gray Cast Iron or hard scale steel?"
The APKT150412-KM YBG302 is engineered for high-stability 90° shoulder milling. Its KM Chipbreaker features a reinforced T-land design, making it the premier choice for abrasive materials like cast iron. Combined with the YBG302 PVD Grade, it offers exceptional thermal shock resistance and edge toughness, ensuring long tool life in dry or wet machining conditions.
Model Code Interpretation
90° Parallelogram
11° Clearance Angle
Hole & Chipbreaker
Cutting Edge (15mm)
Thickness (4.76mm)
Radius (1.2mm)
Iron/Roughing Slot
Product Core Advantages
- Nano-PVD YBG302 Grade: Thicker TiAlN coating for high impact resistance.
- KM Geometry: Negative chamfered edge provides maximum stability.
- 1.2mm Radius: Superior edge strength for large depths of cut (Ap).
- Thermal Stability: Excels in interrupted dry milling of cast iron.
Application Scenarios
- Heavy-duty roughing of Gray & Nodular Cast Iron.
- Milling steel components with uneven surfaces or hard crusts.
- Large-scale industrial engine block and mold base machining.
- Shoulder milling, face milling, and step machining.
Technical Specifications & Cutting Data
| Metric Model | Inch Equivalent | Cutting Speed (Vc) | Feed per Tooth (fz) |
|---|---|---|---|
| APKT150412-KM | APKT 0.591" x 0.187" R0.047" | 150-280 m/min | 0.12-0.35 mm/z |
Compatibility: Matching Tool Holders
Fits all standard ISO indexable milling cutters for APKT 15 size. High performance when paired with:
ZCC Grade Comparison
- YBG202: General-purpose PVD. Best for steel/stainless steel finishing.
- YBG302 (This Product): Higher toughness. Ideal for roughing and interrupted milling.
- YBD151/152: CVD grade. Specifically for high-speed continuous cast iron machining.
Why Choose Our ZCC.CT Solutions?
Direct support from industrial tooling directors.
100% genuine ZCC.CT factory sealed.
Highly optimized logistics and technical data.
Verified Customer Reviews
"Excellent tool life on gray iron blocks. The KM chipbreaker handles interrupted cuts much better than the standard GM profile. Highly recommend for roughing."
John D. - USA"Stabile Schneidkante! We use it for GGG40 milling. Very consistent YBG302 grade."
Hans B. - Germany"Ottima resistenza al calore. Perfect for M10-M12 flange milling on cast parts."
Marco L. - Italy"品質が安定しています。The cost-performance ratio is unbeatable for mass production of iron components."
Sato Y. - JapanFAQ: Technical Help
While optimized for cast iron (K) and steel (P), the YBG302 grade can handle stainless steel roughing. However, for a better finish on stainless, we recommend the -PM or -EM chipbreakers.
The 12 (1.2mm) radius provides a thicker edge cross-section, reducing the risk of corner chipping during heavy-duty side milling compared to the 0.8mm version.
For cast iron, dry machining is typically better for YBG302 to prevent thermal shock. For steel milling, high-pressure coolant is recommended to flush chips.
Machining Tip: Grade Optimization
If you experience "Notch Wear" on the cutting line, try increasing your lead angle or switching to a YBG302 grade with a slightly higher feed rate to push the heat into the chip rather than the insert edge.
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.