ZCC.CT SEKN1203AFTN YBC301 Milling Insert | Steel Machining
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SEKN1203AFTN YBC301
PRECISION ENGINEERED BY ZCC.CT | BLACK DIAMOND SERIES
High-Efficiency Face Milling Solutions
The ZCC.CT SEKN1203AFTN is a staple in high-productivity machining environments. Designed for 45-degree face milling, this square insert utilizes the legendary YBC301 grade. It is specifically engineered to handle the thermal and mechanical stresses of carbon steel and alloy steel milling, ensuring a smooth surface finish and extended tool life.
| Technical Feature | Metric (ISO) | Imperial (ANSI) |
|---|---|---|
| Model Number | SEKN1203AFTN | SEKN 42 AFTN |
| Thickness | 3.18 mm | 1/8" |
| Insert Width | 12.70 mm | 1/2" |
YBC301 Grade Material
YBC301 is a premium CVD (Chemical Vapor Deposition) coated grade. It features a thick Al2O3 layer and a TiCN coating over a high-strength carbide substrate. This "Black Diamond" technology provides superior heat resistance, making it the best wear-resistant milling insert for P15–P35 steel groups.
AFTN Geometry (Chipbreaker)
The AFTN geometry is optimized for general-purpose milling. It features a flat top with a precise rake angle that ensures stable chip flow and minimizes cutting force, which is essential for reducing spindle wear on your CNC machinery.
Recommended Cutting Parameters
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (fz) |
|---|---|---|
| Carbon Steel (HB180-225) | 160 - 260 m/min | 0.10 - 0.25 mm/t |
| Alloy Steel (HB225-325) | 120 - 210 m/min | 0.08 - 0.20 mm/t |
Need Help With Mitsubishi Inserts?
Looking for a Mitsubishi 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 Mitsubishi 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.