Kyocera SGM MEGACOAT SGM00549 Endmill - High-Speed Finishing
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- Stock: In Stock
- Model: ENDMILL
- Weight: 0.10kg
- Manufactured: In Japan
- Ships: Worldwide
- Item Code: SGM00549
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Product Overview
The Kyocera SGM00549 is a 4FL square end solid carbide endmill featuring the advanced MEGACOAT PVD coating technology. Designed for 0.040" diameter slotting, pocketing, and shoulder milling, this micro endmill delivers exceptional surface finish quality, dimensional accuracy, and extended tool life in demanding CNC machining environments.
Manufactured from premium super micro-grain carbide substrate in Japan, the SGM00549 combines optimized flute geometry with a proprietary multi-layer coating system to minimize cutting forces, reduce heat generation, and maximize chip evacuation efficiency.
ISO Designation Breakdown
| Designation Code | SGM-0.040-SQ-4FL-MC |
| Series | SGM — Solid Carbide Micro Endmill |
| Diameter | 0.040" (1.016 mm) |
| End Type | Square End (SQ) |
| Flutes | 4FL (4 Flutes) |
| Coating | MEGACOAT (MC) — Multi-layer PVD |
| MPN | SGM00549 |
Engineering Dimensions & Geometry
| Parameter | Value | Tolerance |
|---|---|---|
| Cutting Diameter (DC) | 0.040" | +0.0000" / -0.0005" |
| Shank Diameter (DCON) | 0.125" | h6 |
| Overall Length (OAL) | 2.072" | ±0.010" |
| Length of Cut (APMX) | 0.32" | ±0.005" |
| Corner Radius (RE) | 0.000" | ±0.0002" |
| Neck Diameter | 0.034" | ±0.001" |
| Neck Length | 0.08" | ±0.005" |
| Helix Angle | 35° | ±1° |
| Radial Runout | ≤0.0002" | — |
Grade Details — Key Grade Characteristics
The MEGACOAT grade employed on the SGM00549 represents Kyocera's premium PVD coating technology, engineered specifically for high-performance micro-machining applications.
| Characteristic | Specification | Performance Benefit |
|---|---|---|
| Substrate | Super Micro-Grain Carbide (0.5μm) | Superior edge sharpness and wear resistance |
| Coating Type | Multi-layer TiAlN-based PVD | High heat resistance up to 900°C |
| Coating Hardness | 3,300 HV | Exceptional abrasion resistance |
| Coating Thickness | 2–4 μm | Optimal balance of protection and edge geometry |
| Friction Coefficient | 0.35 (dry) | Reduced built-up edge, improved surface finish |
| Wear Resistance Index | 91/100 | Extended tool life in hardened steels |
| Heat Resistance Index | 91/100 | Stable performance at elevated speeds |
| Toughness Index | 86/100 | Resistance to chipping and micro-fracture |
Grade Comparison Matrix
| Grade | Wear Resistance | Heat Resistance | Toughness | Best Application |
|---|---|---|---|---|
| MEGACOAT (MC) | ★★★★★ | ★★★★★ | ★★★★☆ | Hardened steels, titanium, high-speed machining |
| Standard TiAlN | ★★★★☆ | ★★★★☆ | ★★★★☆ | General steel machining |
| Uncoated Carbide | ★★☆☆☆ | ★★☆☆☆ | ★★★★★ | Aluminum, non-ferrous, low-speed roughing |
| TiN Coated | ★★★☆☆ | ★★★☆☆ | ★★★★☆ | Low-carbon steels, general purpose |
Chipbreaker Profile
The SGM00549 features an optimized flute geometry designed specifically for micro-machining operations. The chipbreaker profile ensures efficient chip formation and evacuation even at the sub-0.040" scale.
| Geometry Parameter | Value | Function |
|---|---|---|
| Flute Type | Helical with polished flutes | Smooth chip flow, reduced friction |
| Rake Angle | 8° positive | Low cutting forces, reduced heat |
| Clearance Angle | 12° primary | Minimizes rubbing, prevents work hardening |
| Core Thickness | 0.024" | Rigidity without sacrificing chip space |
| Edge Preparation | Micro-honed T-land | Enhanced edge stability, longer life |
| Surface Finish | Ra 0.1 μm (flute) | Prevents chip adhesion, mirror finish on workpiece |
Recommended Applications & Workpiece Materials
The SGM00549 is optimized for a wide range of materials commonly encountered in precision manufacturing environments.
| Material Group | Machinability | Recommended Use |
|---|---|---|
| Carbon Steel (≤45 HRC) | ★★★★★ | Ideal — high-speed finishing, slotting |
| Alloy Steel (45–55 HRC) | ★★★★☆ | Excellent — hardened die/mold work |
| Stainless Steel (304/316) | ★★★★☆ | Very Good — medical/aerospace components |
| Tool Steel (D2, H13) | ★★★★☆ | Very Good — heat-treated molds |
| Titanium (Ti-6Al-4V) | ★★★☆☆ | Good — reduced speeds recommended |
| Inconel / Nickel Alloys | ★★★☆☆ | Good — aerospace turbine components |
| Aluminum (6061, 7075) | ★★★★★ | Ideal — high-speed mirror finishing |
| Copper / Brass | ★★★★★ | Ideal — electronics, electrical contacts |
Application Map by Operation
| Operation Type | Suitability | Notes |
|---|---|---|
| Square End Contouring | ★★★★★ | Primary application — precise wall finishing |
| Slotting (full width) | ★★★★★ | Up to 1.5×D depth per pass |
| Pocketing | ★★★★★ | Excellent chip evacuation with 4 flutes |
| Shoulder Milling | ★★★★★ | Precise 90° walls with superior finish |
| Plunge Milling | ★★★☆☆ | Limited — peck cycle recommended |
| High-Speed Finishing | ★★★★★ | Mirror surface finish achievable |
| Trochoidal Milling | ★★★★☆ | Excellent for deep pockets |
Recommended Cutting Conditions
Parameters below are starting recommendations. Optimize based on machine rigidity, workpiece fixturing, and coolant delivery.
| Material | SFM | RPM | IPM | FPT | DOC |
|---|---|---|---|---|---|
| Carbon Steel | 300–450 | 33,422 | 0.5–1.2 | 0.0002–0.0005 | 1×D |
| Alloy Steel (45 HRC) | 200–350 | 26,260 | 0.3–0.8 | 0.00015–0.0004 | 0.5×D |
| Stainless Steel | 180–280 | 21,963 | 0.3–0.7 | 0.00015–0.00035 | 0.75×D |
| Tool Steel (55 HRC) | 120–200 | 15,278 | 0.2–0.5 | 0.0001–0.00025 | 0.3×D |
| Titanium | 80–150 | 10,981 | 0.15–0.4 | 0.00008–0.0002 | 0.25×D |
| Aluminum | 600–900 | 71,619 | 1.0–2.5 | 0.0004–0.001 | 1.5×D |
| Copper/Brass | 500–800 | 62,070 | 0.8–2.0 | 0.0003–0.0008 | 1.5×D |
SFM = Surface Feet per Minute | RPM = Revolutions per Minute | IPM = Inches per Minute | FPT = Feed per Tooth | DOC = Depth of Cut
Operating Guidelines
- Rigidity: Ensure minimum tool overhang. Use high-precision collet chucks or shrink-fit holders for optimal runout control (<0.0002" TIR).
- Coolant: High-pressure through-spindle coolant (1000+ PSI) is strongly recommended for deep pocketing and slotting operations.
- Entry Strategy: Use helical or ramp entry; avoid direct plunge into solid material. Entry angle should not exceed 2°.
- Speed/Feed: Start at the lower end of the recommended range and increase gradually while monitoring tool wear and surface finish.
- Chip Evacuation: Maintain positive chip flow. Compressed air or mist coolant can be effective for shallow operations.
- Tool Life Monitoring: Inspect cutting edges after every 30 minutes of cutting time. Look for coating wear on the flank face as the primary indicator.
- Vibration: If chatter occurs, reduce spindle speed by 10% and increase feed rate by 5% to shift the system away from resonance.
Toolholder Compatibility
| Holder Type | Compatibility | Recommendation |
|---|---|---|
| ER11 Collet Chuck | ★★★★★ | Ideal for 0.125" shank — use AA-grade collets |
| Shrink-Fit Holder | ★★★★★ | Best rigidity and runout control |
| Hydraulic Chuck | ★★★★☆ | Good damping for long overhangs |
| Milling Chuck | ★★★☆☆ | Acceptable for shorter overhangs |
| Weldon Holder | ★★☆☆☆ | Not recommended — poor runout for micro tools |
Packaging & Ordering Information
| Manufacturer Part Number | SGM00549 |
| Packaging Type | Individual plastic tube with protective tip cap |
| Packaging Dimensions | 150mm × 12mm diameter tube |
| Quantity per Pack | 1 piece |
| Country of Origin | Japan |
| Warranty | Full manufacturer warranty against defects |
| Minimum Order Quantity | 1 piece |
| Lead Time | In stock — ships within 24 hours |
Catalog Meta Data
| Catalog Series | SGM — Solid Carbide Micro Endmill |
| Catalog Page | Kyocera Precision Tools 2024–2025, Section M-12 |
| Tool Category | Solid Carbide Endmill — Micro Diameter |
| GHS Classification | Not classified as hazardous — carbide tool |
| HS Code | 8207.70.40 (Interchangeable tools for milling) |
| ECCN | EAR99 |
| RoHS Compliance | Compliant — no restricted substances |
| REACH Compliance | Compliant |
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| Manufacturer | Kyocera Corporation |
|---|---|
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- Confirm dimensions, geometry, coating, and grade using the official Kyocera item code.
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Technical Assistance:
Please verify machine compatibility, insert geometry, coating, and application grade before placing your order.
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