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Description
CCGT 09T304 turning insert – positive 80° diamond for aluminum
| Technical data | |
|---|---|
| Side length l | 9.7 mm |
| Insert thickness s | 3.97 mm |
| Hole diameter d1 | 4.4 mm |
| Corner radius rε | 0.4 mm |
| ANSI code | CCGT 32.51 |
Cutting data for the CCGT 09T304 insert for aluminum and nonferrous metals
finishing, semi-finishing, and roughing — ISO N group
| Material | Finishing | Semi-finishing | Roughing | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Vc [m/min] | Feed f [mm/rev] | ap [mm] | Vc [m/min] | Feed f [mm/rev] | ap [mm] | Vc [m/min] | Feed f [mm/rev] | ap [mm] | |
| NAluminum and nonferrous materials | 375-2400 | 0.1 | 0.1 | 40-240 | 0.16 | 2.55 | 40-240 | 0.22 | 5 |
K10 carbide positive insert – applications and design
single-sided 80° diamond with a sharp edge for nonferrous metals
The CCGT 09T304 turning insert is a single-sided, diamond-shaped indexable insert made of fine-grained carbide in grade K10, designed for turning aluminum and nonferrous metals. Shape C, a diamond with a 80° corner angle, combines a strong corner with convenient contour access during longitudinal turning and facing. Positive geometry with a 7° clearance angle, indicated by the second letter C, reduces cutting resistance and creates a sharp, often polished edge essential for machining soft, sticky alloys. The insert is single-sided and provides two cutting corners on one side. It is secured by a screw through the countersunk hole, while the single-sided chip breaker (type T according to ISO 1832) controls the flow of long, tangled aluminum chips. The corner radius rε of 0.4 mm favors finishing and a smooth surface at low feeds.
Key benefits of the K10 carbide insert
- Sharp, polished GT cutting edge — positive geometry reduces built-up edge formation and allows thin cuts without crushing the soft material.
- Grade K10 for ISO group N — fine-grained carbide for aluminum, brass, bronze, and other nonferrous metals, with ample cutting speed capability.
- Corner radius rε 0.4 mm — small radius for finishing, smooth surfaces, and accurate dimensions at low feeds.
- Tolerance class G, indicating a peripherally ground insert, ensures repeatable corner positioning in the pocket and makes it easier to hold dimensions in batch production.
- Single-sided design with a hole: screw fastening through the countersunk hole, without an additional top clamp.
- The 80° corner angle provides a rigid, chip-resistant corner well suited to longitudinal turning and light facing.
Applications and cutting data selection for the diamond-shaped insert
The CCGT 09T304 insert, also written without spaces as CCGT09T304, performs well in finish turning of bushings, pistons, flanges, and housings made of aluminum alloys, as well as brass and bronze components. The sharp GT edge reduces built-up edge formation and allows thin cuts without crushing the material. On automatic lathes and when turning thin-walled workpieces, it performs well as a turning tool insert mounted in holders with a 09 diamond-shaped pocket.
Calculate spindle speed using n = 1000·Vc/(π·D): for a shaft diameter of 50 mm at a cutting speed Vc = 800 m/min, the result is approximately 5093 rpm. Aluminum allows high cutting speeds, so maintain ample coolant flow and unobstructed chip evacuation to prevent material deposits from degrading the surface finish. For alloys with higher silicon content, reduce speed and monitor cutting edge wear. Grade K10 indexable inserts are supplied by the Korean brand Horn.
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Application limitation
Grade K10 and positive GT geometry are optimized for aluminum and nonferrous metals — do not use this insert for turning steel or stainless steel. With high-silicon alloys (above 12% Si, e.g., hypereutectic aluminum-silicon alloys), the sharp edge wears faster — consider a version with a cutting edge made of PCD (polycrystalline diamond).
Rhombic insert designation decoder according to ISO 1832
how to read the CCGT 09T304 code — designation positions 1–7
Designation CCGT 09T304 according to the standard ISO 1832: 4 letters describe geometry and construction, 3 numeric codes describe dimensions. Each field has a number, an icon, and a brief description.
Compatible turning tools
holders with a 09 diamond-shaped pocket — external and internal turning
SCLCR/L 1212 F0912×12 × 80 mmR right-hand
←L left-hand
→
←L left-hand
→
SCLCR/L 1616 H0916×16 × 100 mmR right-hand
←L left-hand
→
←L left-hand
→
SCLCR/L 2020 K0920×20 × 125 mmR right-hand
←L left-hand
→
←L left-hand
→
SCLCR/L 2525 M0925×25 × 150 mmR right-hand
←L left-hand
→
←L left-hand
→
SCMCN 1212 F0912×12 × 80 mmR right-hand
←L left-hand
→
←L left-hand
→
SCMCN 1616 H0916×16 × 100 mmR right-hand
←L left-hand
→
←L left-hand
→
SCMCN 2020 K0920×20 × 125 mmR right-hand
←L left-hand
→
←L left-hand
→
SCMCN 2525 M0925×25 × 150 mmR right-hand
←L left-hand
→
←L left-hand
→
SCACR/L 1212 F0912×12 × 80 mmR right-hand
←L left-hand
→
←L left-hand
→
SCACR/L 1616 H0916×16 × 100 mmR right-hand
←L left-hand
→
←L left-hand
→
SCACR/L 2020 K0920×20 × 125 mmR right-hand
←L left-hand
→
←L left-hand
→
SCACR/L 2525 M0925×25 × 150 mmR right-hand
←L left-hand
→
←L left-hand
→
S12K SCLCR/L-09Ø12 | Ømin 16 mm | L=125R right-hand
←L left-hand
→
←L left-hand
→
S16P SCLCR/L-09Ø16 | Ømin 21 mm | L=170R right-hand
←L left-hand
→
←L left-hand
→
S20R SCLCR/L-09Ø20 | Ømin 25 mm | L=200R right-hand
←L left-hand
→
←L left-hand
→
S25S SCLCR/L-09Ø25 | Ømin 32 mm | L=250R right-hand
←L left-hand
→
←L left-hand
→
S32T SCLCR/L-09Ø32 | Ømin 40 mm | L=300R right-hand
←L left-hand
→
←L left-hand
→
S12K SCFCR/L-09Ø12 | Ømin 16 mm | L=125R right-hand
←L left-hand
→
←L left-hand
→
S16P SCFCR/L-09Ø16 | Ømin 21 mm | L=170R right-hand
←L left-hand
→
←L left-hand
→
S20R SCFCR/L-09Ø20 | Ømin 25 mm | L=200R right-hand
←L left-hand
→
←L left-hand
→
S25S SCFCR/L-09Ø25 | Ømin 32 mm | L=250R right-hand
←L left-hand
→
←L left-hand
→
S32T SCFCR/L-09Ø32 | Ømin 40 mm | L=300R right-hand
←L left-hand
→
←L left-hand
→
Frequently asked questions about the CCGT 09T304 insert
use, turning tool selection, and turning parameters
Two — the diamond has two corners with a 80° angle, and the positive geometry (7° clearance angle) is single-sided, so only one side of the insert is used. When the first corner is worn, rotate the insert in the pocket to use the second cutting edge.
Holders with a 09 diamond-shaped pocket (IC 9.525 mm): for external turning SCLCR/L, SCMCN and SCACR/L with shank cross sections from 12×12 to 25×25 mm; for internal turning, boring bars S12K–S32T with the suffix SCLCR/L or SCFCR/L. The full list is available in the compatible turning tools section.
Only in corner radius: 0.4 mm in version 04 is intended for finishing at low feeds and achieving smooth surfaces, while 0.8 mm in version 08 is a more versatile option with greater strength at slightly higher feeds. The other dimensions (IC 9.525 mm, thickness 3.97 mm) are identical.
It is not intended for this purpose — grade K10 and positive GT geometry are optimized for the group ISO N, covering aluminum and nonferrous metals. For turning steel (ISO P group), select an insert in a grade designed for steel, with a suitable coating and a stronger edge.
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Shipping
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| Courier GLS | Przelew24 / Prepayment | 14,76 zł gross | Delivery time 1 working day |
| Courier GLS | Cash on delivery | 17,26 zł gross | Lead time 1 working day |
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