graphite end mill graphite end mill graphite end mill

Graphite 2 Flutes Flat End Mill

SAMHO Diamond-Coated 2-Flute Flat End Mill — High-Precision Machining Powerhouse

Don’t let abrasive materials reduce your production efficiency. SAMHO diamond-coated flat end mills are engineered for high-precision machining of graphite, ceramics, and other brittle non-metallic materials. Leveraging advanced, high-adhesion diamond coating technology—proven in real-world applications—these tools offer long service life and stable, reliable performance.

  • Applicable Materials: Optimized for graphite electrodes, technical ceramics, and other brittle materials.
  • Surface Quality: Precision 2-flute geometry delivers superior surface finishes with minimal tool marks during flat and contour machining.
  • Extreme Durability: Ultra-fine-grain carbide substrate combined with chemically inert diamond coating provides excellent wear resistance and protection against micro-chipping.
  • High Precision: Ground on 5-axis CNC machines, with dimensional tolerances strictly controlled within ±0.01 mm for consistent batch production.

In the field of graphite and ceramic machining, tool precision and durability are critical. The SAMHO diamond-coated 2-flute flat end Mmill (D0.2–6 mm) is engineered to meet these high standards. It delivers exceptional cutting accuracy and long-lasting performance. This end mill enables efficient CNC machining, improves process stability, and enhances surface quality. It is the ideal choice for machining graphite, ceramics, and other hard, brittle materials.


Advanced Technical Features

High-Adhesion Diamond Coating for Ultra-Long Tool Life
SAMHO’s proprietary diamond coating technology provides cutting tools with exceptional hardness and chemical inertness.

  • Wear Resistance: Cutting edges stay sharp even during long, continuous dry-cutting operations.
  • Micro-Chipping Prevention: The coating remains securely bonded to the carbide substrate under high-speed friction conditions.

Designed for High-Precision Planar and Profile Machining
With a precision 2-flute geometry, this end mill is ideal for high-accuracy cutting of hard and brittle materials such as graphite and ceramics.

  • Graphite Machining: Produces clean, smooth surfaces suitable for intricate electrode workpieces.
  • Ceramic Machining: Delivers precise surface finishes with no residual tool marks.

Efficient Dual-Flute “Cold Cutting” Design
The sharp 2-flute geometry reduces cutting heat and improves chip evacuation.

  • High Chip Evacuation Efficiency: Quickly removes abrasive dust and debris from the cutting zone.
  • Reduced Cutting Load: Minimizes heat buildup, preventing cracks in brittle materials.

Ultra-Fine Grain Carbide Substrate and Precision Grinding
Made from high-strength, micro-grain carbide and processed on dedicated CNC machine tools, ensuring consistent accuracy and repeatability.

  • Strict Dimensional Tolerances: Maintained within ±0.01 mm for consistent batch production.
  • Superior Fracture Resistance: Extends tool life, even in highly abrasive machining applications.

Typical Applications

Graphite Machining: EDM electrodes, graphite molds, and structural components.

Ceramic Machining: Electrical ceramics, zirconia, and other brittle non-metallic materials.

Composite Materials: Milling of glass fiber or carbon fiber reinforced plastics (GFRP/CFRP).


Why Source Wholesale from SAMHO?

xceptional Durability: SAMHO’s proprietary diamond coating provides high hardness, excellent wear resistance, and extended tool life.

Precision Machining: The precision 2-flute geometry ensures accurate cuts and smooth surface finishes on graphite, ceramics, and composite materials.

Reliability and Stability: Made from fine-grain carbide and precision ground, these end mills maintain strict dimensional tolerances and consistent performance across batch production.

Multi-Material Compatibility: Ideal for machining graphite electrodes and molds, ceramic components, and fiberglass or carbon fiber composites.

Recommended Materials for Machining (Highly Recommended: ⭐️ | Recommended: ⭕️ | Suggested: )

Category Work Material Grade
DIE STEEL Carbon steels (S45C/S55C)
Alloy steels (SK/SCM/SUS)
Prehardened steels (NAK/HPM)
Hardened steels (~55/~60/~70HRC)
SPECIAL MATERIAL Aluminum alloys
Graphite ⭐️
Copper
Plastics
Carbon fiber
Titanium alloys
Heat resistant alloys
Cemented carbide
Hard brittle (non-metallic) material

end mill

Total 8 models

Model Number Outside Diameter Length of Cut Effective Length Bta Shank Taper Angle Overall Length Number of Flutes Shank Diameter In Stock
GRAS2-0020060 0.2 0.6 15° 50 2 4
GRAS2-0050150 0.5 1.5 15° 50 2 4
GRAS2-0100300 1 3 15° 50 2 4
GRAS2-0150450 1.5 4.5 15° 50 2 4
GRAS2-0200600 2 6 15° 50 2 4
GRAS2-0300900 3 9 15° 50 2 4
GRAS2-0401200 4 12 50 2 4
GRAS2-0601800 6 18 60 2 6

Contour Milling Parameters

Work Material Graphite
(mm) Diameter (mm) Overhang (min-1) Speed (mm/min) Feed Side Milling Ap(mm) Side Milling Ae(mm) Slotting Ap(mm) Slotting Ae(mm)
D 0.2 4D 28000 800 1D 0.05D 0.05D
D 0.2 15D 28000 800 0.5D 0.05D 0.05D
D 0.2 25D 26000 800 0.5D 0.05D 0.05D
D 0.5 4D 28000 1000 1D 0.05D 0.1D
D 0.5 15D 26000 1000 0.5D 0.05D 0.1D
D 0.5 25D 24000 1000 0.5D 0.05D 0.1D
D 1 4D 24000 1200 1D 0.05D 0.3D
D 1 15D 24000 1200 0.4D 0.04D 0.2D
D 1 25D 20000 1200 0.2D 0.03D 0.15D
D 1.5 4D 22000 1500 1D 0.05D 0.3D
D 1.5 10D 22000 1500 0.5D 0.05D 0.2D
D 1.5 15D 18000 1500 0.5D 0.05D 0.15D
D 2 4D 20000 1800 1D 0.05D 0.3D
D 2 10D 20000 1800 0.5D 0.05D 0.2D
D 2 15D 16000 1200 0.2D 0.04D 0.2D
D 3 4D 20000 3000 1D 0.05D 0.3D
D 3 10D 20000 2400 0.5D 0.05D 0.2D
D 3 15D 18000 2000 0.3D 0.05D 0.2D
D 4 4D 18000 2200 1.5D 0.05D 0.3D
D 4 8D 15000 2000 0.7D 0.05D 0.2D
D 4 12D 12000 1600 0.4D 0.05D 0.2D
D 6 4D 13000 3000 2D 0.05D 0.3D
D 6 8D 13000 3000 1D 0.05D 0.2D
D 6 12D 8000 2000 0.6D 0.03D 0.2D

Notes:
*Use a milling machine dedicated for graphite;

*Recommend air blow for graphite.

Download 2: Graphite 2 Flutes Flat End Mill File

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