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Products3 Flute Solid Carbide End Mill for Aluminum | Standard & Extra Long Reach (1mm-16mm)
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3-Flute End Mills for Aluminum In-StockReady to ShipRecommended

3 Flute Solid Carbide End Mill for Aluminum | Standard & Extra Long Reach (1mm-16mm)

High-performance 3 Flute Tungsten Carbide End Mills designed for Aluminum. Available in standard and extra-long lengths (OAL up to 200mm). Features mirror-polished flutes for superior chip evacuation and surface finish. Factory direct pricing!

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Product Function

The 3 Flute Tungsten Carbide End Mill for Aluminum is the "Goldilocks" tool for non-ferrous machining, bridging the gap between 2-flute and 4-flute designs.
  • Vibration Reduction: The 3-flute geometry provides better core strength than a 2-flute mill, significantly reducing chatter and vibration during high-speed machining.
  • Superior Surface Finish: With more cutting edges per revolution, it delivers a finer wall and floor finish, often eliminating the need for a separate finishing pass.
  • Deep Pocketing & Slotting: Our Extra Long Series (up to 200mm) allows for deep cavity machining where standard tools cannot reach, maintaining rigidity without rubbing.
  • Efficient Chip Evacuation: Large, polished gullets ensure that despite having an extra flute, chips are evacuated rapidly to prevent re-cutting or clogging.

Product Features

  • Material: Ultra-Fine Micro Grain Tungsten Carbide (HRC55) for high wear resistance.
  • Uncoated & Polished: Specialized mirror-like polish on the flutes minimizes friction and prevents "Built-Up Edge" (BUE) where aluminum sticks to the tool.
  • Helix Angle: 45° or 55° high helix design for smooth shearing action and vertical chip ejection.
  • Wide Range of Sizes:
  • Diameters: From
    ϕ1.0mm\phi1.0mm
    
    to
    ϕ16.0mm\phi16.0mm
    
    .
  • Lengths: From standard 50mm up to 200mm Extra Long for deep mold making and aerospace parts.
  • Shank Options: Standard straight shank with h6 tolerance for high-precision collets.

Specifications

We offer an extensive range of sizes. Below is the specification chart for our Standard and Long Series.
Cutter Dia (d)
Shank Dia (D)
Length of Cut (L2)
Over All Length (L1)
Type
Standard Length Series




1.0
4
1 / 2 / 3
50
Standard
1.5
4
2 / 3 / 4.5
50
Standard
2.0
4
2 / 3 / 4 / 6
50
Standard
2.5
4
3 / 4 / 5 / 7.5
50
Standard
3.0
4
3 / 4 / 6
50
Standard
3.0
3
9
50
3mm Shank
3.0
4 / 6
9
50
Standard
4.0
4
4 / 6 / 8 / 12
50
Standard
4.0
6
12
50
6mm Shank
5.0
5 / 6
15 / 20
50 / 60
Standard
6.0
6
6 / 8 / 10 / 12
50
Short Flute
6.0
6
18 / 20
50 / 60
Standard
6.5
8
19.5
60
Special
7.0 / 7.5
8
21 / 22.5
60
Special
8.0
8
8 / 10 / 12 / 14
50
Short Flute
8.0
8
24
50
Standard
10.0
10
10~20
60
Various LOC
10.0
10
30
75
Standard
11.0
12
33
75
Special
12.0
12
12~20
60
Short Flute
12.0
12
36
75
Standard
Extra Long Series




1.0
4
3
75 / 100
Long Reach
1.5
4
4.5
75 / 100
Long Reach
2.0
4
6
75 / 100
Long Reach
2.5
4
7.5
75 / 100
Long Reach
3.0
3 / 4
9
75 / 100
Long Reach
4.0
4
14 / 16
75
Long Reach
4.0
4
20 / 25 / 30
100
Long Reach
5.0
6
25
75
Long Reach
5.0
6
30
100
Long Reach
6.0
6
25 / 30
75
Long Reach
6.0
6
25 / 40
100
Long Reach
8.0
8
32
75
Long Reach
8.0
8
35 / 40
100
Long Reach
10.0
10
40
100
Long Reach
12.0
12
45
100
Long Reach
16.0
16
45
100
Long Reach
Super Long Series




6.0
6
45
150
Super Long
8.0
8
50
150
Super Long
10.0
10
55
150
Super Long
12.0
12
60
150
Super Long
16.0
16
70
150
Super Long
16.0
16
90
200
Ultra Long

RPM/Feed Reference (Aluminum Alloys)

Note: 3-Flute end mills allow for higher feed rates compared to 2-flute mills. Always adjust based on your machine's rigidity and cooling capabilities.
Diameter (
ϕ\phi

)
RPM (min⁻¹)
Feed (mm/min)
Slotting (ap)
Side Milling (ae)

ϕ1−3mm\phi 1 - 3mm


15,000 - 30,000
600 - 1500
0.2D
0.1D

ϕ4−6mm\phi 4 - 6mm


10,000 - 18,000
1500 - 3000
0.5D
0.2D

ϕ8−10mm\phi 8 - 10mm


8,000 - 12,000
2500 - 4500
1.0D
0.3D

ϕ12−16mm\phi 12 - 16mm


5,000 - 8,000
3000 - 5000
1.0D
0.5D
  • Coolant: Flood coolant is strongly recommended to flush chips and maintain temperature.
  • Long Reach Tools: Reduce RPM and Feed by 30-50% when using tools with OAL > 100mm to prevent vibration.

Promotion Policy

  1. Free Sample: Free sample can be provided, if clients agree to pay for shipping cost.
  1. First Order Coupon: New clients can enjoy USD50 discount coupon for first order, if the total order amount is more than USD500.
  1. Big Order Discount: Clients can enjoy 2%~5% discount, if the total order amount is more than USD5000.

Client Benefits

  • Extended Reach Capabilities: Our stock of 100mm, 150mm, and 200mm end mills allows you to take on deep-mold jobs without waiting for custom tooling.
  • Cost Efficiency: 3-Flute design offers longer tool life than 2-flute in stable setups, reducing tool change frequency.
  • Consistency: CNC ground ensures every flute cuts equally, providing excellent surface finishes straight off the machine.
  • Fast Shipping: Large inventory of standard and non-standard lengths ready for immediate dispatch.

FAQ

Q1: Why choose a 3-flute end mill over a 2-flute for Aluminum? A1: While 2-flute is great for chip evacuation in deep slots, the 3-flute design offers a stronger core and better balance. This allows for higher feed rates and a smoother surface finish, especially in peripheral milling.
Q2: Are these tools coated? A2: Standard specification is Uncoated High Polish. Coatings can sometimes increase friction in aluminum. However, we can provide DLC (Diamond-Like Carbon) or ZrN coatings upon request for abrasive aluminum alloys (high silicon).
Q3: Can I use the 150mm/200mm long end mills at full speed? A3: For extended length tools (Over All Length > 100mm), we recommend reducing the RPM and Feed Rate initially to avoid chatter, then ramping up as stability allows.
Q4: Do you offer mixed size orders for the bulk discount? A4: Yes, you can combine different diameters and lengths (e.g., standard lengths mixed with 150mm long series) to reach the order value required for discounts.