Kyocera TC SGS38346 3/4 2FL Endmill | Carbide - Steel | Kyotow.com
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- Stock: In Stock
- Model: ENDMILL
- Weight: 0.10kg
- Manufactured: In Japan
- Ships: Worldwide
- Item Code: SGS38346
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1. Product Overview
The SGS38346 is the go-to solution for machinists seeking reliable performance and extended tool life in steel and stainless steel. Manufactured in Japan by Kyocera Corporation, this 19.050 mm (3/4") diameter, 2FL solid carbide endmill features a 0.045R (1.143 mm) corner radius and Titanium Carbonitride (TiCN) coating. Ideal for CNC milling centers performing slotting, profiling, and pocketing operations on steel, stainless steel, and cast iron.
2. ISO Designation Breakdown
| ISO Parameter | Value | Description |
|---|---|---|
| D1 | 19.050 mm | Cutting diameter |
| D2 | 19.050 mm | Shank diameter |
| L1 | 95.25 mm | Overall length |
| L2 | 38.10 mm | Flute length |
| R | 1.143 mm (0.045R) | Corner radius |
| Z | 2 | Number of flutes |
| Helix | 30° | Helix angle |
3. Engineering Dimensions & Geometry
| Parameter | Specification |
|---|---|
| Cutting Diameter (D1) | 19.050 mm (3/4") |
| Shank Diameter (D2) | 19.050 mm |
| Overall Length (L1) | 95.25 mm |
| Flute Length (L2) | 38.10 mm |
| Corner Radius (R) | 0.045R (1.143 mm) |
| Number of Flutes (Z) | 2 |
| Helix Angle | 30° |
| Core Diameter | 11.430 mm |
| Taper Angle | 0° (Straight) |
| Max Axial Depth (ap) | 38.10 mm |
| Max Radial Depth (ae) | 19.050 mm |
4. Grade Details — Key Grade Characteristics
The TC grade features a Titanium Carbonitride (TiCN) coating applied via Physical Vapor Deposition (PVD) over an ultra-fine grain carbide substrate (0.5 μm grain size). This combination delivers exceptional hardness (3,200 HV), high oxidation resistance up to 400°C (752°F), and a low friction coefficient of 0.4.
| Property | Value |
|---|---|
| Coating Material | Titanium Carbonitride (TiCN) |
| Coating Color | Blue-Grey |
| Hardness | 3,200 HV |
| Max Operating Temperature | 400°C (752°F) |
| Coating Thickness | 2-4 μm |
| Friction Coefficient | 0.4 |
| Substrate | Ultra-fine grain carbide (0.5 μm) |
| Edge Preparation | T-land + hone (0.02-0.05 mm) |
| Surface Finish Capability | Ra 0.4-0.8 μm |
| Tool Life vs. Uncoated | 2.5x vs. uncoated |
5. Grade Comparison Matrix
| Grade | Coating | Hardness | Max Temp | Best For | Finish |
|---|---|---|---|---|---|
| TC | TiCN | 3,200 HV | 400°C | Steel, SS, Cast Iron | Ra 0.4-0.8 μm |
| TiAlN | TiAlN | 3,300 HV | 800°C | Hardened Steel >45 HRC | Ra 0.6-1.2 μm |
| DLC | Diamond-Like Carbon | 2,500 HV | 350°C | Aluminum, Copper, Plastics | Ra 0.2-0.5 μm |
| Uncoated | — | 1,600 HV | 500°C | Non-ferrous, Plastics | Ra 0.8-1.6 μm |
6. Chipbreaker Profile
The WF (Wide Flute) chipbreaker design on the SGS38346 is optimized for efficient chip evacuation in slotting and pocketing operations. The wide flute geometry provides ample chip pocket volume, reducing the risk of chip recutting and built-up edge (BUE) formation. This design is particularly effective in medium-to-high feed rate applications where chip control is critical.
| Chipbreaker Feature | Specification |
|---|---|
| Chipbreaker Style | WF — Wide Flute |
| Rake Angle | +8° to +12° |
| Clearance Angle | 10° to 12° |
| Chip Pocket Volume | High — optimized for 2-flute design |
| Recommended Chip Load | 0.05–0.20 mm/tooth (material dependent) |
7. Recommended Applications & Workpiece Materials
The SGS38346 is designed for milling operations on the following material groups:
- Carbon Steel (C45, C50, 1045, 4140) — Excellent chip control and tool life
- Alloy Steel (4340, 8620, 16MnCr5) — High wear resistance at elevated speeds
- Stainless Steel (304, 316, 17-4PH) — Reduced work hardening tendency
- Cast Iron (GG25, GGG40, FC250) — Superior abrasion resistance
- Tool Steel (H13, D2, O1) — Pre-hardened to 45 HRC
- Heat-Treated Steel — Up to 50 HRC with reduced parameters
8. Application Map by Operation
| Operation | Suitability | Notes |
|---|---|---|
| Slotting | ★★★★★ | Full-width slotting up to 1×D depth |
| Profiling / Side Milling | ★★★★★ | ae up to 0.5×D for finishing |
| Pocketing | ★★★★☆ | Trochoidal or conventional |
| Plunging | ★★★☆☆ | Center-cutting capable; reduce feed 50% |
| Ramping | ★★★★☆ | Max ramp angle 3°–5° |
| Helical Interpolation | ★★★★☆ | Ideal for large hole generation |
| High-Speed Machining (HSM) | ★★★★★ | Optimized for trochoidal paths |
9. Recommended Cutting Conditions
| Material | Vc (m/min) | fz (mm/z) | RPM (approx.) | Coolant |
|---|---|---|---|---|
| Carbon Steel | 80-120 m/min | 0.06-0.18 mm/z | 1340-2000 | Emulsion / MQL |
| Stainless Steel | 60-90 m/min | 0.05-0.14 mm/z | 1000-1500 | High-pressure emulsion |
| Aluminum | 200-300 m/min | 0.10-0.25 mm/z | 3350-5000 | Air blast / MQL |
| Titanium | 30-50 m/min | 0.04-0.10 mm/z | 500-840 | High-pressure flood |
| Cast Iron | 100-150 m/min | 0.08-0.22 mm/z | 1670-2500 | Dry / Minimum quantity |
Note: Values are starting recommendations. Adjust based on machine rigidity, workpiece clamping, and desired surface finish. Reduce speeds by 20–30% for interrupted cuts or cast skins.
10. Operating Guidelines
- Runout: Maintain spindle runout ≤ 0.01 mm (TIR) for optimal tool life and surface finish.
- Coolant: Use water-soluble emulsion (5–8% concentration) or Minimum Quantity Lubrication (MQL) for steel and stainless steel. Cast iron may be machined dry.
- Entry Strategy: Use ramp or helical entry; avoid direct plunging except at 50% reduced feed rate.
- Chip Evacuation: Ensure adequate coolant pressure (≥ 70 bar for deep pocketing) or compressed air to clear chips from the cutting zone.
- Tool Overhang: Minimize overhang to ≤ 3×D. Use hydraulic or shrink-fit holders for best results.
- Pre-setting: Measure tool length and diameter offsets accurately before first use.
- Inspection: Check cutting edges for chipping or wear after every 30–60 minutes of cutting time.
- Storage: Store in original packaging away from moisture and corrosive environments.
11. Toolholder Compatibility
| Toolholder Type | Taper / Interface | Collet / Adapter Size | Max RPM |
|---|---|---|---|
| HSK63-A | ISO 12164 | 20 mm | 25,000 RPM |
| BT40 | MAS 403 | 20 mm | 20,000 RPM |
| CAT40 | ANSI B5.50 | 20 mm | 20,000 RPM |
| BT50 / CAT50 | MAS 403 / ANSI B5.50 | 20 mm | 15,000 RPM |
| Hydraulic Chuck | Any compatible taper | 20 mm | 30,000 RPM |
| Shrink-Fit Holder | Any compatible taper | 20 mm | 40,000 RPM |
12. Packaging & Ordering Information
| Item | Details |
|---|---|
| Manufacturer Part Number (MPN) | SGS38346 |
| Brand | Kyocera Corporation |
| Country of Manufacture | Japan |
| Packaging Quantity | 1 piece per pack |
| Individual Weight | ~0.120 kg |
| Warranty | Full manufacturer warranty against defects |
| Certification | ISO 9001:2015, ISO 14001:2015 |
13. Catalog Meta Data
| Field | Value |
|---|---|
| Product Series | SGS Solid Carbide Endmill — 2-Flute Corner Radius |
| Tool Category | Solid Carbide Endmill |
| Tool Type | Corner Radius Endmill |
| Flute Count | 2 |
| Helix Type | WF (Wide Flute) |
| Coating | TC (TiCN) |
| ISO Application Group | K30-K40 / P15-P30 |
| DIN Standard | DIN 844 |
| Tolerance Class | h6 (shank), h10 (cutting diameter) |
| Surface Finish | Ground and polished flutes; coated |
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| Manufacturer | Kyocera Corporation |
|---|---|
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