end mill for copper end mill for copper end mill for copper

End Mill for Copper 4 Flutes Corner Radius End Mill

SAMHO DLC-Coated 4-Flute Corner Radius End Mill — Precision Tool for Non-Ferrous Metal Machining

Do not let the high adhesion of pure copper reduce your machining efficiency or increase tooling costs. The SAMHO DLC Series 4-Flute Corner Radius End Mill is specifically engineered for high-precision copper machining. It also delivers stable performance in aluminum alloys and resin materials.

Built on proven DLC low-friction coating technology, this tool features an optimized cutting edge geometry. It effectively reduces material adhesion during CNC machining. As a result, it improves tool life and enhances surface finish quality.

Applicable Materials:
Optimized for precision machining of pure copper (electrode copper). It is also suitable for aluminum alloys and resin materials.

Excellent Anti-Adhesion Performance:
The DLC coating significantly reduces friction. It suppresses BUE formation and ensures smooth, stable cutting performance.

High-Rigidity Structural Design:
Made from premium ultra-fine grain carbide. The 4-flute corner radius design improves edge strength and reduces chipping risk. It also supports efficient material removal in high-speed machining.

High-Precision Manufacturing Standards:
Dimensional tolerances are controlled within ±0.01 mm. Shank diameter tolerance is held from 0 to +0.003 mm. This ensures accurate clamping and consistent batch production performance.

With consistent tool performance and engineering-grade manufacturing quality, SAMHO provides reliable solutions for demanding CNC machining environments that require both productivity and surface finish quality.

In precision machining of non-ferrous metals and non-metallic materials, cutting tools must meet demanding performance standards. This is especially true when machining high-viscosity materials such as pure copper. These applications require extremely sharp cutting edges, excellent anti-adhesion properties, and consistent chip evacuation.

The SAMHO 4-flute corner radius end mill with DLC coating (D1–D12 mm) is specifically engineered for these challenges. Based on extensive CNC machining experience, this tool is optimized for stable and efficient copper cutting. The combination of a high-quality carbide substrate and a DLC coating significantly reduces friction during cutting. It also minimizes built-up edge formation, which is a common issue in copper machining.


Advanced Technical Features

In precision machining of non-ferrous metals, tool performance is critical. This is especially true when cutting highly adhesive materials such as red copper. These applications require excellent anti-adhesion properties, strong wear resistance, and consistent cutting stability.

The SAMHO DLC-coated 4-Flute bull nose end mill is engineered to meet these demands. Drawing on extensive CNC machining experience, this tool combines optimized geometry with advanced coating technology. The result is improved machining efficiency, better surface quality, and longer tool life.

High-Performance DLC Coating for Longer Tool Life

The advanced DLC coating provides low friction and excellent anti-adhesion performance:

  • Reduces Built-Up Edge (BUE): Minimizes material sticking during copper machining
  • Improves Wear Resistance: Maintains a sharp edge in high-speed, continuous cutting
  • Lowers Cutting Friction: Reduces heat generation and improves surface finish

4-Flute Corner Radius Design for Efficiency and Finish

The 4-flute geometry with a corner radius is optimized for copper finishing and semi-finishing:

  • Corner Radius Strength: Reduces stress at the tool tip and improves resistance to chipping
  • Higher Cutting Efficiency: Supports higher feed rates in high-speed machining
  • Better Surface Quality: Produces smoother finishes and reduces post-processing

Optimized Chip Evacuation and Stable Cutting

Designed specifically for non-ferrous materials, the flute geometry improves cutting performance:

  • Efficient Chip Removal: Prevents chip buildup and reduces re-cutting
  • Lower Heat Buildup: Helps avoid material adhesion and thermal deformation
  • Stable Machining: Maintains consistent performance at high spindle speeds

Ultra-Fine Grain Carbide and Precision Manufacturing

The tool is made from high-quality ultra-fine grain carbide and finished with high-precision grinding:

  • Tight Tolerances: Controlled within ±0.01 mm for consistent results
  • High Toughness: Reduces the risk of breakage during long runs
  • Reliable Performance: Suitable for precision parts and complex geometries

This end mill is designed primarily for red copper machining. It also performs well in aluminum alloys and resin materials. It is ideal for high-speed finishing and semi-finishing applications where surface quality and tool life are critical.


Target Applications & Industries

High-Precision Red Copper (Electrode Copper) Machining:
Effectively reduces material adhesion and built-up edge formation. It delivers smooth, high-gloss surface finishes with excellent dimensional accuracy.

Precision Machining of Aluminum Alloys:
Suitable for high-speed cutting and finishing operations. It ensures stable machining performance and consistent surface quality.

Machining of Resins and Composite Materials:
Provides clean cutting action with minimal burr formation. It produces well-defined edges and reduces secondary finishing work.

General Finishing and Semi-Finishing Operations:
Ideal for complex contours and parts requiring high surface quality and tight tolerances.


Why Choose SAMHO as Your Wholesale Partner?

Optimized for Red Copper Machining
Specifically engineered for red copper applications. It effectively reduces material adhesion and built-up edge formation. This improves surface finish quality and machining stability in CNC operations.

Low-Friction DLC Coating for Extended Tool Life
The advanced DLC coating reduces cutting resistance and heat generation. It helps extend tool life and improves reliability in continuous and high-speed machining environments.

4-Flute Corner Radius Design for Balanced Performance
The corner radius structure reduces stress concentration at the cutting edge. It lowers the risk of chipping while maintaining high feed efficiency and stable surface precision.

Consistent Performance in CNC Production
Manufactured under strict engineering-grade standards, SAMHO tools deliver stable and repeatable performance. This ensures reliable results in both small-batch and mass production environments.

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

corner radius end mill

Total 49 models

Model Number Outside Diameter Length Of Cut Radius Shank Taper Angle Overall Length Number Of Flutes Shank Diameter In Stock
SHDSR4-01001020 1 2 R0.1 12° 50 4 4
SHDSR4-01002020 1 2 R0.2 12° 50 4 4
SHDSR4-01501030 1.5 3 R0.1 12° 50 4 4
SHDSR4-01502030 1.5 3 R0.2 12° 50 4 4
SHDSR4-02001040 2 4 R0.1 12° 50 4 4
SHDSR4-02002040 2 4 R0.2 12° 50 4 4
SHDSR4-02003040 2 4 R0.3 12° 50 4 4
SHDSR4-02005040 2 4 R0.5 12° 50 4 4
SHDSR4-03001060 3 6 R0.1 12° 50 4 4
SHDSR4-03002060 3 6 R0.2 12° 50 4 4
SHDSR4-03003060 3 6 R0.3 12° 50 4 4
SHDSR4-03005060 3 6 R0.5 12° 50 4 4
SHDSR4-04001080 4 8 R0.1 50 4 4
SHDSR4-04002080 4 8 R0.2 50 4 4
SHDSR4-04003080 4 8 R0.3 50 4 4
SHDSR4-04005080 4 8 R0.5 50 4 4
SHDSR4-04005080-75 4 8 R0.5 75 4 4
SHDSR4-04005080-100 4 8 R0.5 100 4 4
SHDSR4-05002100 5 10 R0.2 12° 50 4 6
SHDSR4-05005100 5 10 R0.5 12° 50 4 6
SHDSR4-06002120 6 12 R0.2 12° 50 4 6
SHDSR4-06005120 6 12 R0.5 12° 50 4 6
SHDSR4-06010120 6 12 R1 50 4 6
SHDSR4-06002120-75 6 12 R0.2 75 4 6
SHDSR4-06005120-75 6 12 R0.5 75 4 6
SHDSR4-06010120-75 6 12 R1 75 4 6
SHDSR4-06002120-100 6 12 R0.2 100 4 6
SHDSR4-06005120-100 6 12 R0.5 100 4 6
SHDSR4-06010120-100 6 12 R1 100 4 6
SHDSR4-08005160 8 16 R0.5 60 4 8
SHDSR4-08010160 8 16 R1 60 4 8
SHDSR4-08005160-75 8 16 R0.5 75 4 8
SHDSR4-08010160-75 8 16 R1 75 4 8
SHDSR4-08005200-100 8 20 R0.5 100 4 8
SHDSR4-08010200-100 8 20 R1 100 4 8
SHDSR4-08005200-150 8 20 R0.5 150 4 8
SHDSR4-08010200-150 8 20 R1 150 4 8
SHDSR4-10005200 10 20 R0.5 75 4 10
SHDSR4-10010200 10 20 R1 75 4 10
SHDSR4-10005250-100 10 25 R0.5 100 4 10
SHDSR4-10010250-100 10 25 R1 100 4 10
SHDSR4-10005250-150 10 25 R0.5 150 4 10
SHDSR4-10010250-150 10 25 R1 150 4 10
SHDSR4-12005240 12 24 R0.5 75 4 12
SHDSR4-12010240 12 24 R1 75 4 12
SHDSR4-12005300-100 12 30 R0.5 100 4 12
SHDSR4-12010300-100 12 30 R1 100 4 12
SHDSR4-12005300-150 12 30 R0.5 150 4 12
SHDSR4-12010300-150 12 30 R1 150 4 12

Contour Milling Parameters

Work Material Oxygen-free & Copper
(mm) Diameter (min-1) Speed (mm/min) Feed
D1 15000 1000
D1 15000 1000
D1.5 14000 1500
D1.5 14000 1500
D2 14000 1500
D2 14000 1500
D2 14000 1500
D2 14000 1500
D3 13000 1800
D3 13000 1800
D3 13000 1800
D3 13000 1800
D4 12000 2000
D4 12000 2000
D4 12000 2000
D4 12000 2000
D4 12000 2000
D4 12000 2000
D5 12000 2200
D5 12000 2200
D6 11000 2400
D6 11000 2400
D6 11000 2400
D6 11000 2400
D6 11000 2400
D6 11000 2400
D6 11000 2400
D6 11000 2400
D6 11000 2400
D8 9000 2600
D8 9000 2600
D8 9000 2600
D8 9000 2600
D8 9000 2600
D8 9000 2600
D8 9000 2600
D8 9000 2600
D10 8000 2600
D10 8000 2600
D10 8000 2600
D10 8000 2600
D10 8000 2600
D10 8000 2600
D12 7500 3000
D12 7500 3000
D12 7500 3000
D12 7500 3000
D12 7500 3000
D12 7500 3000

Note:
Decrease both spindle speed and feed rate proportionally when the milling parameters exceed the machine’s maximum
spindle speed;

*Recommend oil coolant for Stainless Steels and Heat Resistance Alloys;

*Recommend using a non-contact measuring device to avoid damaging the precision tip point;

*Decrease both spindle speed and feed rate proportionally in case of chattering.

Download 2: End Mill for Copper 4 Flutes Corner Radius End Mill File

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