CCMT 09T308-HMP OS5835 Carbide Turning Insert

The CCMT 09T308-HMP OS5835 is a positive-rake carbide turning insert designed for semi-finishing operations on CNC and conventional lathes. Featuring an 80° diamond (C-shape) geometry with a positive clearance angle, it ensures smooth cutting, low cutting forces, and stable performance. The 0.8 mm corner radius provides stronger cutting edges, making the insert more durable under higher feed rates and offering extended tool life compared to smaller radii.

Produced in the OS5835 grade, the insert is built on a fine-grained carbide substrate with a copper-colored PVD coating. This combination makes it versatile across steels, stainless steels, and general cast irons, performing reliably under medium machining conditions. The HMP chipbreaker is engineered for semi-finishing and finishing applications, promoting controlled chip evacuation, reduced cutting resistance, and consistent surface quality.

The CCMT 09T308-HMP OS5835 is compatible with SCLCR and SCBCR tool holders, designed for positive-rake C-shaped inserts. It is widely used in general engineering, mold manufacturing, and automotive sectors where reliability, accuracy, and balanced performance are required.

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

• 08 – Corner radius: 0.8 mm

• HMP – Chipbreaker for semi-finishing/finishing

• OS5835 – Grade for steels, stainless steels, and cast iron

Key Features:

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

• Size: 9 mm, thickness 3.97 mm, radius 0.8 mm

• OS5835 grade – versatile carbide for steels, stainless steels, and cast iron

• HMP chipbreaker for semi-finishing stability and chip control

• Positive rake for smooth machining and reduced forces

• Fits holders: SCLCR, SCBCR

• Best for semi-finishing steels and stainless steels

Grade Information (OS5835):

• Coating: PVD, copper color

• Application: turning and milling of steels (45#, Q235), stainless steels (304, 316), cast iron

• Best for: stainless steel turning and milling

• Material hardness: HRC <30

• Cutting speed: 120–220 m/min