DCMT 11T308-TM OS8225 Turning Inserts

The DCMT 11T308-TM OS8225 Turning Inserts are high-performance carbide inserts designed for finishing and semi-finishing operations on steels and stainless steels. Using the OS8225 grade, the DCMT 11T308-TM OS8225 Turning Inserts combine a fine-grain carbide substrate with advanced PVD coating, providing toughness, wear resistance, and heat stability. With their TM chipbreaker geometry, the DCMT 11T308-TM OS8225 Turning Inserts ensure efficient chip control, smooth cutting action, and excellent surface finish in a wide range of applications.

Optimized for ISO P20–P35 steels and ISO M20–M30 stainless steels, these inserts are suitable for continuous and slightly interrupted cutting. The positive rake geometry minimizes cutting forces, enhances stability, and improves productivity, even on machines with lower rigidity. The larger 0.8 mm corner radius increases edge strength, making the insert ideal for semi-finishing while still maintaining accuracy and surface quality.

Widely applied in automotive, aerospace, and precision engineering industries, these inserts are valued for their reliability, cost efficiency, and long tool life.

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)

• 08 – Corner radius (0.8 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 strength and durability

• PVD OS8225 coating ensures wear resistance and stability

• TM chipbreaker for smooth chip evacuation and reduced forces

• 0.8 mm radius for stronger edge and semi-finishing applications

• Excellent results in steels and stainless steels

Equivalent Turning Inserts (Other Brands)

• Sandvik: DCMT 11T308-PM 4325 (Sandvik official site)

• Seco: DCMT 11T308-M3 F30M

• Kennametal: DCMT 11T308-MP KCP25

• Iscar: DCMT 11T308-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 3.0 mm

For DCMT inserts and more turning solutions, visit our Diamond Cut store.