ZCC.CT APKT160408-PM YBD252 Carbide Milling Inserts for Cast Iron
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ZCC.CT APKT160408-PM YBD252 Inserts
Tough CVD Coated Carbide for Interrupted Cast Iron Machining
Product Overview
"Which milling insert grade is best for roughing to semi-finishing ductile iron when dealing with interrupted cuts and abrasive scales?"
The ZCC.CT APKT160408-PM YBD252 is the industrial answer to demanding Cast Iron (ISO K) applications. While the YBD152 is optimized for pure speed, the YBD252 grade provides the added toughness required for heavy-duty milling, ductile iron (GGG), and components with uneven surfaces. Featuring a thick CVD Al2O3 + TiCN coating, this insert withstands the intense abrasive wear of iron dust while the PM (Medium Duty) chipbreaker ensures reliable chip evacuation and edge security during high-feed operations.
Key Features
- ✔ Superior Edge Toughness: Specialized substrate designed to resist chipping during heavy interrupted milling.
- ✔ Abrasive Wear Resistance: Thick CVD coating protects the carbide from the high-silicon content found in gray and nodular iron.
- ✔ PM Geometry: A stable cutting edge with balanced rake angles reduces power consumption while maintaining strength.
Technical Specifications
Parallelogram
11° Relief
Tolerance
Screw Clamp
16mm Edge
4.76mm Thick
0.8mm Radius
Medium Cut
| ISO Model | Metric (mm) | Imperial (inch) |
|---|---|---|
| APKT 160408 | 16.5 x 4.76 x 0.8 | 0.650" x 3/16" x 0.031" |
Recommended Cutting Parameters (YBD252)
| Material Group | Speed (Vc) | Feed (fz) |
|---|---|---|
| Gray Cast Iron (GG) | 200 - 400 m/min | 0.15 - 0.45 mm/z |
| Ductile Iron (GGG) | 150 - 300 m/min | 0.12 - 0.38 mm/z |
Compatible Cutters: EMP01 / EMP02 / FMA07 Series
Optimized for BAP400R style 90° square shoulder face mills and end mills.
Shop ZCC.CT Toolholders →Primary Applications
- Rough Machining of Nodular and Gray Iron
- Face Milling Large Casting Bases
- Machining Automotive Components (Cylinder Blocks)
- Heavy Interrupted Cut Milling
Machine Compatibility
Fits all standard APKT1604 toolholders. Recommended for high-torque CNC machines and rigid setups due to the toughness of the YBD252 grade.
ZCC.CT Grade Material Comparison
YBD252 vs. YBD152: While YBD152 is your first choice for high-speed, stable finishing in gray iron, YBD252 is the mandatory choice for reliability. If your workpiece has cast skin, sand inclusions, or involves heavy interruptions, YBD252 provides the fracture toughness YBD152 lacks. It is the "safety first" grade for medium machining of all cast iron types.
Customer Success Stories
"The best insert for our ductile iron housings. We used to chip edges every 5 parts, now we run full shifts with YBD252."
— Robert B., USA"Hervorragende Standzeit in GGG50. Die PM-Geometrie bricht die Späne sehr gut."
— Hans W., Germany"Ottima resistenza all'usura abrasiva. Prezzo molto competitivo."
— Paolo G., Italy"Reliable ZCC quality. Consistent performance in gray iron mass production."
— Sato M., JapanFrequently Asked Questions
Can YBD252 handle steel?
YBD252 is specialized for Cast Iron. While it can cut steel in a pinch, its coating and substrate are optimized for the abrasive silicon in iron. For steel, use YBC301 or YBC302.
Is coolant required for YBD252?
CVD coatings handle heat well. Dry milling is often preferred for Gray Iron to prevent thermal shock, but Ductile Iron may benefit from an air blast or MQL.
Material Pro Tip: Beating the Scale
When milling raw castings with APKT160408-PM YBD252, ensure your depth of cut (Ap) is deep enough to penetrate beneath the abrasive surface scale. This allows the tough substrate to work against clean metal, significantly extending tool life compared to "grazing" the surface.
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.