Korloy VCGT160404-AK H01 (ANSI VCGT 331-AK) Polished Aluminum Insert (10pcs)
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The Original Korloy VCGT160404-AK H01 (ANSI Cross Reference: VCGT 331-AK) is a high-performance 7° Relief Polished Carbide Insert designed for High-Efficiency Mirror Finishing. Utilizing the robust 16-size (3/8" IC) substrate, this insert offers maximum stability during profiling of large-diameter non-ferrous components. The 0.4mm (0.016") corner radius provides the perfect balance of edge durability and surface brilliance on Aluminum, Copper, Brass, and Plastics.
Industry Standard for Gloss: The H01 grade features an ultra-polished rake face that reduces friction to a minimum. This effectively prevents the "welding" of soft materials (Built-Up Edge) to the tip, ensuring your workpieces maintain a consistent, high-gloss aesthetic from the first part to the last.
Technical Specifications (Metric & ANSI):
| ISO Designation | VCGT 160404-AK |
| ANSI Designation | VCGT 331-AK |
| Inscribed Circle (IC) | 9.525 mm / (3/8") |
| Thickness (S) | 4.76 mm / (3/16") |
| Corner Radius (r) | 0.4 mm / (0.016") |
| Relief Angle | 7° (C-Type) |
| Grade | H01 (Micro-Polished Uncoated Carbide) |
Core Performance Benefits:
- Robust 1604 Substrate: 50% thicker than the 11-size, allowing for more aggressive depths of cut and better vibration dampening.
- Enhanced Edge Security: The 0.4mm radius is less prone to micro-chipping, making it ideal for semi-finishing and high-speed profiling.
- 7° Universal Clearance: Perfectly matched for SVJCR and SVUCR holders, ensuring a clean cut without heel drag on standard lathe turrets.
- AK "Aluminum Knight" Geometry: High rake angles and sharp ground edges ensure burr-free results even on gummy alloys.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) |
|---|---|---|---|
| Aluminum Alloys (6061/7075) | 350-1200 m/min | 0.08-0.25 mm/rev | 0.1-3.5 mm |
| Copper / Brass | 200-700 m/min | 0.05-0.20 mm/rev | 0.1-2.5 mm |
| Engineering Plastics | 150-600 m/min | 0.10-0.30 mm/rev | 0.2-4.0 mm |
Compatible Tooling Systems (7° Relief):
Precision-matched for VCGT 1604 (ANSI 33) tool holders:
- External Profile Turning: SVJCR 2020K16 / SVJCR 2525M16
- Internal Boring Bars: S25S-SVUCR16 / S32T-SVUCR16
Machinist Tip: Balanced Performance
Optimizing the VCGT 331-AK:
VCGT160404 is the most popular 16-size 35° insert because it can both light-rough and fine-finish. This eliminates a tool change for many aluminum jobs.
Because of the R0.4 radius and the 1604 thickness, you can push the feed rate (fn) up to 0.25mm/rev. The AK chipbreaker will maintain control, keeping your chips small and manageable.
Pro Advice: Always use flood coolant on 6061-T6 to achieve a mirror finish. If you see smoke, your SFM (Cutting Speed) is too high or your coolant flow is insufficient.
Packaging: 10 pieces per box.
VCGT 331-AK Korloy H01, VCGT 160404 for aluminum, high feed aluminum inserts, mirror finish carbide tips for brass, SVJCR 2525M16 compatible inserts, polished 35 degree lathe inserts