CCMT 09T304-MF3 OS9201S Carbide Turning Insert

The CCMT 09T304-MF3 OS9201S is a positive-rake carbide turning insert designed for finishing and semi-finishing operations on CNC and conventional lathes. With its 80° diamond (C-shape) geometry and positive clearance angle, it provides smooth cutting, reduced forces, and excellent dimensional accuracy. The 0.4 mm corner radius is optimized for precision finishing, enabling fine surface quality and tight tolerances.

Manufactured in the OS9201S grade, this insert uses a fine-grained carbide substrate with a silver-colored PVD coating that provides superior wear resistance and heat resistance. It is particularly effective for machining stainless steels, titanium alloys, and high-temperature alloys. The MF3 chipbreaker ensures efficient chip control and stability, even in continuous cutting conditions, while improving tool life and part quality.

The CCMT 09T304-MF3 OS9201S is compatible with SCLCR and SCBCR holders, which are designed for positive-rake C-shaped inserts. It is commonly used in aerospace, medical, and precision engineering industries where surface finish and accuracy on difficult-to-machine materials are critical.

Code Breakdown:

• C – Insert shape: 80° diamond

• C – Clearance angle: 7° (positive rake)

• M – Tolerance class (medium)

• T – Insert with hole and chipbreaker

• 09 – Insert size: 9 mm

• T3 – Insert thickness: 3.97 mm

• 04 – Corner radius: 0.4 mm

• MF3 – Chipbreaker for semi-finishing and finishing

• OS9201S – Grade for stainless steels, titanium, and heat-resistant alloys

Key Features:

• CCMT-style 80° diamond positive-rake carbide insert

• Size: 9 mm, thickness 3.97 mm, radius 0.4 mm

• OS9201S grade – wear and heat resistance for stainless steels and alloys

• MF3 chipbreaker for finishing and chip control

• Positive rake for low cutting forces and smooth finishes

• Fits holders: SCLCR, SCBCR

• Ideal for precision machining of stainless steels and titanium

Grade Information (OS9201S):

• Coating: PVD, silver color

• Application: semi-finishing and finishing turning of stainless steels (304, 316), titanium alloys, high-temperature alloys

• Best for: continuous cutting of stainless steels and titanium

• Material hardness: HRC <45

• Cutting speed: 40–220 m/min