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ProductsHRC55 4 Flute Tungsten Carbide End Mill for Steel – Decimal Sizes in Stock
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HRC55 4 Flute Tungsten Carbide End Mill for Steel – Decimal Sizes in Stock

Precision HRC55 4 flute carbide end mills for steel. Full decimal sizes, deep inventory, fast delivery, OEM available. Free sample support.

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HRC55 4 Flute Tungsten Carbide End Mill for Steel

Professional solid carbide end mills designed for steel machining. Complete decimal diameter range, stable performance, and ready stock for fast shipment.


Product Function

Suitable for:
  • Carbon steel
  • Alloy steel
  • Pre-hardened steel
  • Mold steel
Widely used in precision milling, side milling, slotting, contour machining and semi-finishing.


Product Features

  • 4 flutes design, higher rigidity and stable cutting
  • Optimized helix angle for smooth chip evacuation
  • Nano coating for wear resistance and longer tool life
  • Excellent surface finish
  • High dimensional accuracy
  • Swiss grinding machines ensure consistency
  • Full decimal sizes available from micro diameter to large diameter
  • Large stock, quick delivery
  • OEM / customized marking supported


Specifications

D1 Cutter Diameter
L2 Length of Cut
D2 Shank Diameter
L1 Overall Length
1.05 ~ 3.95
3.15 ~ 11.85
4
50
4.1 ~ 5.9
12.3 ~ 17.7
6
50
6.1 ~ 7.9
18.3 ~ 23.7
8
60
8.1 ~ 9.9
24.3 ~ 29.7
10
75
10.1 ~ 11.9
30.3 ~ 35.7
12
75
Tolerance: Standard industrial tolerance. Material: 100% virgin carbide. Hardness: Suitable for HRC ≤ 55 steel.


RPM / Feed Reference (for steel ≤ HRC55)

Diameter
RPM Range
Feed per Tooth
Ø1-3mm
12,000 – 20,000
0.005 – 0.02 mm
Ø4-6mm
8,000 – 15,000
0.02 – 0.05 mm
Ø7-10mm
6,000 – 12,000
0.04 – 0.08 mm
Ø11-12mm
5,000 – 10,000
0.05 – 0.10 mm
Actual parameters depend on machine rigidity, cooling and cutting depth.


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.


Clients Benefits

  • Factory direct price
  • Stable tool life close to international brands
  • Strong stock for urgent demand
  • Fast response within 24 hours
  • Flexible cooperation for distributors
  • Custom solutions for special applications


FAQ

Q: Are these tools in stock? A: Yes, most decimal sizes are available in regular inventory.
Q: Can you make special dimensions? A: Yes, OEM and non-standard customization are supported.
Q: What coating do you use? A: We select coatings according to steel machining requirements to balance wear resistance and toughness.
Q: How about tool life compared with famous brands? A: Under proper conditions, our tools can reach about 80% performance with more competitive pricing.
Q: How fast can you ship? A: Stock items can usually be shipped within 1–3 days.