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GM Series Micro Carbide Flat End Mill

Ultra-precision 0.1-0.95mm micro carbide flat end mills with TiSiN coating for steel machining. Engineered for stainless steel, alloy steel and pre-hardened steels ≤38HRC. 2-flute design ensures optimal chip evacuation in micro slotting and profiling.

0.1mm - 0.95mm Diameter 2-Flute Micro Design TiSiN Coated ≤38 HRC ±0.005mm Precision Steel Micro Machining
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GM Series Micro Carbide Flat End Mill
GM Series Micro Carbide Flat End Mill

Procurement & Commercial Terms for Micro Tools

MOQ5 pcs (micro tool minimum) | 50 pcs (bulk pricing)
Lead Time3–5 days (standard micro sizes) | 10–15 days (custom diameters)
Inventory0.1mm–0.95mm in stock. Ultra-micro sizes (≤0.3mm) require careful handling
Special HandlingIndividual protective tubes + anti-static packaging for micro tools
Quality Guarantee100% inspection under microscope. Replacement for any precision defects
ShippingDHL/FedEx Express with tracking | Anti-vibration packaging mandatory

Why Choose GM Micro Flat End Mills for Precision Steel Machining?

 
±0.005mm Precision

Ultra-fine grain carbide substrate with TiSiN coating achieves exceptional dimensional accuracy. Essential for micro mold cavities, medical components, and precision steel parts where tolerances are critical.

 
TiSiN Heat Resistance

TiSiN coating provides superior heat resistance and wear resistance for steel machining. Prevents premature tool wear in micro operations where heat concentration is critical.

 
Optimal Chip Evacuation

2-flute design provides maximum chip evacuation space in micro diameters. Prevents chip packing and breakage in stainless steel and alloy steel micro slotting.

 
High Rigidity Core

Optimized core diameter maximizes tool rigidity at micro scales. Reduces deflection and vibration in steel micro-machining for consistent precision.

GM Micro Flat End Mill Specifications (D0.1-D0.95mm)

GM Micro Flat End Mill Specifications

ModelD (mm)H (mm)d (mm)L (mm)Precision
GM-2FS-0.1-0.2-4-500.10.2450±0.005mm
GM-2FS-0.15-0.3-4-500.150.3450±0.005mm
GM-2FS-0.2-0.4-4-500.20.4450±0.005mm
GM-2FS-0.25-0.5-4-500.250.5450±0.005mm
GM-2FS-0.3-0.6-4-500.30.6450±0.005mm
GM-2FS-0.35-0.7-4-500.350.7450±0.005mm
GM-2FS-0.4-0.8-4-500.40.8450±0.005mm
GM-2FS-0.45-0.9-4-500.450.9450±0.005mm
GM-2FS-0.5-1-4-500.51450±0.005mm
GM-2FS-0.55-1.1-4-500.551.1450±0.005mm
GM-2FS-0.6-1.2-4-500.61.2450±0.005mm
GM-2FS-0.65-1.3-4-500.651.3450±0.005mm
GM-2FS-0.7-1.4-4-500.71.4450±0.005mm
GM-2FS-0.75-1.5-4-500.751.5450±0.005mm
GM-2FS-0.8-1.6-4-500.81.6450±0.005mm
GM-2FS-0.85-1.7-4-500.851.7450±0.005mm
GM-2FS-0.9-1.8-4-500.91.8450±0.005mm
GM-2FS-0.95-1.9-4-500.951.9450±0.005mm

All sizes in stock | Diameter tolerance: ±0.005mm | Runout: <0.003mm | Surface finish: Ra≤0.2μm | Custom diameters available upon request

Micro Tool Handling: Tools ≤0.3mm require special care. Use precision collets (ER11/ER16), minimize overhang, and operate at recommended speeds to prevent breakage. Always use microscope inspection before machining steel.

Material Compatibility for Micro Steel Machining

Workpiece MaterialSuitabilityMicro Machining Notes
Stainless Steel (304, 316)◎ ExcellentTiSiN coating prevents work hardening. Use low speeds (20-40 m/min) with flood coolant
Alloy Steel (42CrMo, S45C)◎ ExcellentExcellent for pre-hardened steels ≤40HRC. Maintain constant chip load
Tool Steel (SKD11, SKD61)◎ ExcellentUse conservative parameters. TiSiN provides heat resistance for micro operations
Pre-hardened Steel (NAK80)◎ ExcellentIdeal for micro mold cavities. Use climb milling exclusively
Carbon Steel (A36, 1045)◎ ExcellentGood machinability. Can use higher feeds than stainless
Aluminum / Copper✗ Not RecommendedUse ALC Series for non-ferrous. GM Series optimized for steel

◎ = Excellent for Micro Steel Machining | ✗ = Not Recommended | GM Micro Series is optimized for steel ≤38HRC. For aluminum or copper micro machining, use our ALC Micro Series.

Precision Applications for GM Micro Flat End Mills

Micro Mold Cavities

Precision machining of micro mold cavities, inserts, and cores in pre-hardened steels. TiSiN coating extends tool life in abrasive mold materials.

Medical Device Components

Micro machining of surgical instruments, implant components, and diagnostic device parts in stainless steel. ±0.005mm precision meets strict medical tolerances.

Precision Steel Parts

Micro slotting, profiling, and pocketing in alloy steels and tool steels. 2-flute design ensures chip evacuation in micro features.

Micro Steel Machining Parameters & Best Practices

Recommended Parameters (Steel ≤40HRC)
  • ✅ D0.1-D0.3mm tools: Vc=20-30 m/min, fz=0.005-0.01 mm/tooth, Depth ≤0.02mm
  • ✅ D0.4-D0.6mm tools: Vc=25-35 m/min, fz=0.008-0.012 mm/tooth, Depth ≤0.03mm
  • ✅ D0.7-D0.95mm tools: Vc=30-40 m/min, fz=0.01-0.015 mm/tooth, Depth ≤0.05mm
  • ✅ Use flood coolant or MQL for heat management in steel micro machining
Critical Micro Machining Tips
  • ⚠️ Use precision collets (ER11/ER16) with <0.003mm runout
  • ⚠️ Minimize overhang - keep tool stickout ≤3× diameter for rigidity
  • ⚠️ Climb milling only - reduces cutting forces and prevents work hardening
  • ⚠️ Avoid dwell - never let tool stop while engaged; steel work-hardens quickly
  • ⚠️ Inspect under microscope before machining - check for edge chipping

Factory Production & Quality Control

Micro carbide grinding and quality inspection line

Manufacturing Process & QA Steps

  • 🔹 Substrate: Ultra-fine grain carbide optimized for micro tool rigidity and TiSiN coating adhesion
  • 🔹 Micro Grinding: 5-axis CNC micro grinding maintains diameter accuracy ±0.005mm and edge quality
  • 🔹 TiSiN Coating: PVD coating applied for heat resistance and wear resistance in steel machining
  • 🔹 Inspection: 100% inspection under microscope. Diameter, runout, and coating thickness verified
  • 🔹 Packaging: Individual protective tubes with anti-static packaging for micro tool protection

Frequently Asked Questions

GM Series micro end mills are available from 0.1mm to 0.95mm diameter. The 2-flute design provides optimal chip evacuation for micro steel machining while maintaining tool rigidity.

Yes. GM Series micro end mills with TiSiN coating are specifically designed for stainless steel, alloy steel and pre-hardened steels up to 38HRC. The coating provides heat resistance and wear resistance critical for micro steel machining.

For micro steel machining (D<1mm): Use Vc=20-40 m/min, fz=0.005-0.015 mm/tooth. Maintain rigid setup with runout <0.003mm. Use climb milling and avoid dwell to prevent work hardening.

Use precision collets with <0.003mm runout, minimize tool overhang (≤3× diameter), use climb milling only, operate at recommended RPM/feed rates, ensure rigid machine setup, and inspect tools under microscope before use. For tools ≤0.3mm, extra caution is required.

Request Quote for GM Series Micro Carbide Flat End Mill

Specify your diameter range, material, and monthly volume. We respond with pricing, stock status within 24 hours.

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