DCMT 11T304-TM OS8225 Turning Inserts

The DCMT 11T304-TM OS8225 Turning Inserts are precision-engineered carbide inserts designed for finishing and semi-finishing operations. Built with the OS8225 grade, the DCMT 11T304-TM OS8225 Turning Inserts combine a fine-grain carbide substrate with advanced PVD coating, ensuring toughness, wear resistance, and thermal stability. Featuring a TM chipbreaker geometry, the DCMT 11T304-TM OS8225 Turning Inserts deliver smooth chip evacuation, reduced cutting forces, and excellent surface quality when machining steels and stainless steels.

These inserts are especially effective for ISO P20–P35 steels and ISO M20–M30 stainless steels. Thanks to their positive rake geometry and sharp edges, they minimize vibration and provide reliable performance even on lower-powered lathes. Their design makes them suitable for continuous and slightly interrupted cuts, offering long tool life and high productivity.

Widely applied in automotive, aerospace, and precision engineering industries, these inserts deliver consistency and cost efficiency in demanding production environments.

Code Breakdown

• D – Insert shape: 55° diamond

• C – Relief angle: 7° positive

• M – Tolerance class: medium

• T – Clamping hole type

• 11 – Insert size (11 mm cutting edge length)

• T3 – Insert thickness (3.97 mm)

• 04 – Corner radius (0.4 mm)

• TM – Chipbreaker for medium cutting

• OS8225 – PVD-coated carbide grade for steels and stainless steels

Key Features of the Turning Insert

• Fine-grain carbide substrate for durability and sharpness

• OS8225 PVD coating ensures wear resistance and thermal stability

• TM chipbreaker for effective chip control and reduced cutting forces

• Optimized for steels and stainless steels

• Excellent surface finish in finishing and semi-finishing operations

Equivalent Turning Inserts (Other Brands)

• Sandvik: DCMT 11T304-PM 4325 (Sandvik official site)

• Seco: DCMT 11T304-M3 F30M

• Kennametal: DCMT 11T304-MP KCP25

• Iscar: DCMT 11T304-TF IC907

Recommended Cutting Data

• Cutting speed (steel): 160–260 m/min

• Cutting speed (stainless steel): 120–200 m/min

• Depth of cut: up to 2.0 mm

These carbide turning inserts are the ideal choice for machinists requiring precision, durability, and productivity. For more carbide inserts and toolholders, visit our Diamond Cut store.