10pcs APKT1604 Milling Insert – SG20 Grade
Developed for demanding milling operations, the APKT1604 insert with SG20 grade offers exceptional performance in a wide range of materials. Built on a fine WC micrograin substrate with high cobalt content, it delivers outstanding edge strength and toughness.
The advanced PVD coating (Silicon + AlTiN) enhances nano-hardness, reduces friction thanks to its low coefficient, and provides excellent thermal stability for extended tool life under high-speed conditions.
Technical Features:
Insert Geometry: APKT1604 (Positive 11° relief angle)
Grade: SG20
Coating: PVD (Silicon + AlTiN)
Color: Grey-Black
Material: Ultra-fine WC substrate with high Co content
Cutting Range:
ISO Range: M20–M40 / P10–P30
Application Areas:
Milling of stainless steels (300 and 400 series)
Milling of carbon steels and alloy steels
Suitable for semi-finishing and finishing operations
Machining Conditions:
Dry or with coolant
Moderate to high cutting speeds
Benefits:
Exceptional edge strength for reliable performance in interrupted cuts.
High nano-hardness for improved wear resistance.
Superior thermal stability at high temperatures.
Reduced friction coefficient for smooth chip evacuation and lower cutting forces.
Optimized for general-purpose and difficult-to-machine materials.
Recommended Machining Examples:
| Material | Cutting Speed (Vc) | Feed per Tooth (fz) | Depth of Cut (ap) | Notes |
|---|---|---|---|---|
| AISI 304 Stainless Steel | 120–180 m/min | 0.08–0.18 mm/tooth | 1.0–2.5 mm | Excellent chip control, superior surface finish |
| AISI 316 Stainless Steel | 100–160 m/min | 0.08–0.15 mm/tooth | 1.0–2.0 mm | Stable edge wear, ideal with coolant |
| Carbon Steel (C45) | 160–240 m/min | 0.12–0.20 mm/tooth | 1.5–3.0 mm | High removal rates, dry cutting possible |
| Alloy Steel (42CrMo4) | 140–200 m/min | 0.10–0.18 mm/tooth | 1.0–2.5 mm | Stable even under interrupted cuts |
| Grey Cast Iron (GG25) | 180–260 m/min | 0.14–0.22 mm/tooth | 1.5–3.0 mm | Suitable for high-speed dry milling |
Dimensional Specifications:
Length (L): 16.0 mm
Width (W): 6.4 mm
Thickness (S): 4.8 mm
Corner Radius (Re): 0.8 mm (other radii available)
Mounting: Single central screw
Notes:
Always select cutting conditions based on material hardness and machine rigidity.
Toolholders must be checked for compatibility with APKT1604 insert type.
