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Description
CCGT 09T308 turning insert – positive 80° diamond insert 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 | 0.8 mm |
| ANSI code | CCGT 32.52 |
Cutting data for the CCGT 09T308 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 | 0.15 | 0.1 | 40-240 | 0.22 | 2.55 | 40-240 | 0.45 | 5 |
Positive K10 carbide diamond insert – applications and construction
single-sided 80° diamond with a sharp GT edge for nonferrous metals
The CCGT 09T308 turning insert is a single-sided, diamond-shaped indexable insert made of fine-grain grade K10 cemented carbide, designed for turning aluminum and nonferrous metals. The C shape, a diamond with a 80° corner angle, combines a strong corner with good access to the workpiece contour. Positive geometry with a 7° clearance angle (the second letter C in the designation) reduces cutting forces and facilitates clean evacuation of long aluminum chips. The sharp, ground GT edge with a countersunk mounting hole provides low entry resistance and a smooth surface at low feeds. The diamond uses two corners on one side, providing two cutting edges per insert.
Key features of the K10 carbide insert for aluminum
- Sharp, ground GT edge — positive geometry reduces cutting resistance and built-up edge when turning aluminum.
- Fine-grain K10 carbide — grade for ISO group N: aluminum, AlSi alloys, brass, bronze, and other nonferrous metals.
- Corner radius rε 0.8 mm — a versatile balance between surface finish and corner strength at feeds up to 0.45 mm/rev.
- Tolerance class G (ground insert) maintains the inscribed circle IC within ±0.025 mm, ensuring repeatable edge positioning in the holder pocket.
- The hole with a 40–60° countersink allows the insert to be secured with a countersunk screw in type S holders, without a clamp above the rake face.
- The 80° corner angle provides a rigid, strong cutting edge for longitudinal turning, facing, and light copy turning with one tool.
Applications and cutting data selection for the diamond-shaped insert
The CCGT 09T308 insert (also written without a space as ccgt09t308) performs well in turning bushings, pistons, flanges, and thin-walled housings made of aluminum alloys, as well as brass and bronze components. Calculate spindle speed using n = 1000·Vc/(π·D): for a shaft diameter of 50 mm at Vc = 800 m/min, the result is approximately 5093 rpm. High cutting speeds are typical of inserts for turning aluminum, so select a spindle and workholding system with sufficient speed capacity in reserve.
For aluminum alloys, use an ample coolant supply to flush chips from the cutting zone and reduce material buildup on the edge, which degrades the surface finish. The positive, sharp edge of grade K10 reduces this effect but requires stable clamping and continuous feed. Grade K10 indexable inserts are supplied by the Korean brand Horn.
Within the CCGT 09T3 family, turning tool inserts differ mainly in nose radius: rε 0.4 mm is selected for finishing thin walls at low feeds, while rε 0.8 mm is a versatile version for medium machining and light roughing. The small thickness of 3.97 mm and positive geometry allow the insert to cut smoothly even on slender workpieces and long, slender bushings.
▲
Application limitation
The thin, sharp GT edge in grade K10 is designed for aluminum and nonferrous metals — not for hardened steel or heavy interrupted cutting, where it chips easily. For turning steel and stainless steel, select an insert with geometry and a grade from groups ISO P or M.
Rhombic insert designation decoder according to ISO 1832
how to read the CCGT 09T308 code — designation positions 1–7
Designation CCGT 09T308 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 09T308 insert
use, turning tool selection, and turning parameters
Two — the 80° diamond has 2 corners usable, while the positive, single-sided geometry (7° clearance angle) allows cutting with only one side. Once one corner becomes dull, rotate the insert in its pocket to use the other 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 letter R denotes the right-hand version, and L the left-hand version.
Mainly in the nose radius: 0.4 mm is used for finishing at low feeds, while 0.8 mm (code 08) is a versatile version for medium machining and light roughing. The remaining dimensions — IC 9.525 mm and thickness 3.97 mm — are identical, so the inserts fit the same holders.
It is not designed for this — grade K10 with a sharp GT edge covers group ISO N, meaning aluminum and nonferrous metals (brass, bronze, AlSi alloys). The thin edge turns these materials smoothly at high speeds but chips easily in steel or hardened steel — use an insert from ISO group P or M for these materials.
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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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