ZCC.CT APKT150412-HT YBG302 Carbide Insert – 15mm Milling R1.2 Heavy Cut Steel
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APKT150412-HT YBG302 ZCC.CT Milling Insert
The Ultimate Heavy-Duty Roughing Solution for Steel & Alloys
Product Overview
"Which insert is best for heavy roughing in alloy steel when the machine setup isn't perfectly rigid?"
The APKT150412-HT YBG302 is ZCC.CT's answer to the toughest milling challenges. The HT chipbreaker is specifically engineered with a wider negative land to provide maximum edge protection during heavy-duty roughing. When combined with the YBG302 PVD Grade—known for its exceptional impact toughness—this insert excels in interrupted cuts and machining materials with hard surface scales or uneven depths of cut.
Model Code Interpretation
90° Parallelogram
11° Clearance Angle
Hole & Chipbreaker
Edge Length (15mm)
Thickness (4.76mm)
Radius (1.2mm)
Heavy-Duty Slot
Product Core Advantages
- HT Reinforced Geometry: A wider negative chamfer ensures the insert survives the highest cutting forces.
- Nano-PVD YBG302: Thicker TiAlN coating layer providing a thermal barrier and extreme edge toughness.
- Shock Resistance: Specifically designed to handle interrupted cuts and machine "crusty" surface materials.
- 1.2mm Corner Radius: Distributes cutting pressure to prevent corner breakout during large-depth milling.
Application Scenarios
- Large-scale roughing of carbon steel and alloy steels (P20, 4140, etc.).
- Milling parts with holes, slots, or interrupted surfaces.
- Ideal for older CNC machines or manual lathes where rigidity is low.
- Heavy face milling and 90-degree step machining in structural steel.
Technical Specifications & Cutting Data
| Metric Model | Inch Equivalent | Cutting Speed (Vc) | Feed per Tooth (fz) |
|---|---|---|---|
| APKT150412-HT | APKT 0.591" x 0.187" R0.047" | 120 - 240 m/min | 0.15 - 0.40 mm/z |
Compatibility: Matching Tool Holders
Standard APKT 15 size. Fully compatible with ZCC.CT and standard ISO 90° milling cutters:
ZCC Grade Logic
- YBG152: High speed finishing for cast iron.
- YBG202: Universal PVD for steel finishing and medium cuts.
- YBG302 (This Product): Maximum toughness. The "Safety Choice" for heavy roughing.
Why Trust BEYOND / OYYU?
- ✅ Technical Director Verification: Every listing is audited for technical accuracy.
- ✅ Genuine Original: 100% factory-sealed ZCC.CT inserts with security labels.
- ✅ Global B2B Support: Extensive experience shipping to USA, EU, and Asian markets.
Verified Customer Feedback
"The HT chipbreaker is a tank. I used it on some rough 4140 forgings and it didn't even flinch. Great tool life."
Brad S. - USA"Beste Wahl für schwere Schruppbearbeitung. YBG302 ist extrem zäh."
Klaus M. - Germany"Ottimo per fresatura pesante. La geometria HT riduce drasticamente le vibrazioni su tagli interrotti."
Giuseppe F. - Italy"非常にタフなチップです。鋳物の荒加工でチップの欠けがなくなりました。"
Kenji K. - Japan"ZCC APKT is my go-to for standard shop work. Reliable and predictable performance."
S. Robinson - UKTechnical FAQ
GM is better for universal machining and general-purpose work. HT should be chosen specifically for Heavy Duty Roughing or when the edge keeps chipping in difficult conditions.
While it depends on the holder, the APKT 15 series can typically handle an axial depth of cut (Ap) up to 12-14mm, though for HT roughing, staying around 8-10mm is ideal for tool life.
Absolutely. We provide only 100% original ZCC.CT products in factory-sealed boxes with serial numbers and anti-counterfeiting labels.
Heavy Machining Tip:
When using the HT chipbreaker for heavy roughing, do not hesitate to increase the feed rate (fz). If the feed is too low, the reinforced edge may "rub" rather than cut, causing premature heat buildup. This insert is designed to bite into the material.
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.