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.
Need Help With ZCC.CT Inserts?
Looking for a ZCC.CT equivalent, alternative grade, or sample catalog? Our CNC specialists have helped 50+ manufacturers in aerospace, automotive, and medical machining source the right tooling at 30–50% lower cost than OEM prices.
This ZCC.CT insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.
Technical FAQ & Buying Guide
When choosing CNC cutting tools, check the full model code, dimensions, grade and selected variant before ordering. Do not rely on the product image alone.
For carbide inserts, tool holders, drills and end mills, compare the mounting dimensions, connection type and manufacturer's specifications with your holder or machine. If you are unsure, share your existing part number and machining application with us before ordering.
Check the product listing for the selling unit, pack quantity and included components. If it is unclear whether the price is per piece or per pack, or whether a tool body and inserts are sold separately, contact us before purchasing.
Select cutting speed, feed rate and depth of cut using the relevant manufacturer's recommendations for your tool model, workpiece material, machine conditions and coolant method. The same settings are not suitable for every product or application.
Our automatic quantity discount is 6% off for 2–9 items and 12% off for 10 or more items, based on the total product quantity in the cart. Other offers may not combine with this discount; check the applicable offer conditions.
According to our shipping policy, orders are typically processed and shipped within 1–3 business days after confirmation. Delivery generally takes 5–20 business days, depending on your destination and shipping method. Customs clearance or unforeseen delays may affect delivery times. A tracking number is sent by email after shipment.