Seco 02426740 Milling Insert SEMX1204AFTN-ME12 F40M Carbide

Product Description

The SECO 02426740 is a solid carbide milling insert carrying manufacturer part number SEMX1204AFTN-ME12 in the F40M fine-grain grade. This square SEMX-12 series insert features a PVD-applied TiAlN and TiN dual coating, a positive rake geometry with a T-land cutting edge style, and a 20-degree relief angle. Four neutral-hand cutting edges deliver a maximum depth of cut of 0.3425 inches per edge. The 0.1874-inch thickness and 0.5-inch inscribed circle conform to ANSI and ISO standards for the 1204 insert size code. Machinists and tool-and-die professionals install this insert in compatible shoulder milling cutter bodies for production work in steel, cast iron, stainless steel, non-ferrous metals, superalloys, and titanium.

This insert is suited for use in face and shoulder milling operations across both roughing and semi-finishing passes. Primary workpiece material categories are steel (P), cast iron (K), and superalloys and titanium (S), with secondary suitability for cast iron and non-ferrous metals. The ME12 chip breaker geometry is optimized for interrupted and continuous cuts where chip control and edge stability are critical. The 0.0441-inch corner radius helps reduce insert chipping on harder ferrous and exotic alloy workpieces. Each package contains one insert; the minimum order quantity is 10 inserts.

Key Features

• Fine-grain solid carbide substrate in F40M grade for toughness and wear resistance in ferrous and exotic alloy applications
• PVD dual coating — TiAlN and TiN — for thermal resistance and extended edge life
• Four cutting edges per insert with positive rake and T-land style for reduced cutting forces
• ME12 chip breaker optimized for chip control in steel, stainless, and superalloy milling
• Maximum depth of cut of 0.3425 inches; 0.0441-inch corner radius
• Screw-lock insert holding method; single-sided; neutral hand

Compatibility

Compatible with SECO cutter series R217.53-12 and R220.53-12 milling cutter bodies. Insert conforms to ANSI and ISO designations SEMX1204AFTN-ME12, size code 1204, inscribed circle range 0.5000 to 0.5100 inches.

Installation Notes

Installation is performed by machinists or CNC tooling technicians following standard indexable insert procedures. Power down the spindle and lock out the machine before accessing the cutter body. Seat the insert fully against the pocket locating surfaces and torque the clamping screw to the cutter body manufacturer's specified value using the correct Torx or hex key. Inspect the insert pocket for wear, chips, or debris before seating a new insert to ensure proper edge alignment and runout.