4-Flute · TiSiN · HRC55 · Standard Reach

2.5mm 4-Flute TiSiN Solid Carbide Square End Millfor HRC55 Steel & Stainless

TiSiN (Titanium Silicon Nitride) coating provides excellent heat resistance and hardness up to 3,500 HV — ideal for dry or near-dry cutting in steel, stainless steel, and cast iron up to HRC55. The 4-flute geometry maximises radial contact and surface finish in profiling, shoulder milling, and finishing passes. Walter CNC 5-axis grinding ensures precise corner geometry and equal pitch between flutes.

D1 2.5mmL2 8mmD2 4mmOAL 50mm4 FlutesTiSiN CoatingHRC55Standard ReachMOQ 1 pc

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Cena referencyjna

29,06 zł

Cena ref. fabryki (PLN)

wg kosztu pręta na 2026-03-31. Wycena końcowa może się różnić.

TiSiN · 4 Flute · HRC55

2.5mm 4F TiSiN Square EM

L2 8mm · D2 4mm · OAL 50mm

Standard Reach · HRC55

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✓ Factory direct pricing

✓ MOQ 1 piece, ships 1–5 days

✓ Custom OAL and helix available

Full Dimensions

Technical Specifications

Cutter Diameter (D1 h7)2.5 mm
Flute Length (L2)8 mm
Shank Diameter (D2 h6)4 mm
Overall Length (L1)50 mm
Number of Flutes4
CoatingTiSiN Titanium Silicon Nitride
Max Material HardnessHRC55
Reach CategoryStandard (L1/D1 = 20.0×)
Helix Angle30°–45° (application dependent)
End GeometrySquare (flat end)
SubstrateK10/K20 Ultra-Fine Grain Carbide
Shank Toleranceh6
MOQ1 piece
Lead Time (standard)1–5 business days
Lead Time (custom)5–15 business days

TiSiN · 4 Flute · HRC55

2.5mm 4-flute TiSiN solid carbide square end mill — L2=8mm OAL=50mm
D1 h7
2.5mm
L2
8mm
D2 h6
4mm
L1
50mm
Flutes
4
Reach
Standard

Where This Tool Excels

2.5mm TiSiN 4F — Recommended Applications

  • ▸Micro-feature engraving and lettering
  • ▸Precision watch and instrument components
  • ▸Dental and medical device micro-milling
  • ▸PCB sub-assembly pocket features
Machining Tip: At ø2.5mm, spindle runout must be ≤ 0.003mm. Use a high-precision collet (ER collet accuracy class ≤ 5µm). Feed rate 0.01–0.04 mm/tooth in HRC55 steel; avoid sudden direction changes to prevent tip breakage.

Coating Performance

TiSiN — Why It Works

  • ▸TiSiN hardness > 3,500 HV — superior to TiAlN
  • ▸Excellent thermal stability in steel and stainless
  • ▸Low friction coefficient reduces cutting temperature
  • ▸Suitable for dry, MQL, or flood coolant environments
ISO PISO MISO K4 flute TiSiN square end millcarbide end mill HRC55 steelsquare end mill stainless steel4 flute solid carbide end mill

Same Size, Different Coating

ø2.5mm / L2 8mm — Other Variants

TiSiN · 2 Flute · HRC55
TiSiN · 2 Flute · HRC55
HRC55 · 2F
Uncoated · 2 Flute · Aluminium
Uncoated · 2 Flute · Aluminium
Non-Ferrous · 2F
Uncoated · 3 Flute · Aluminium
Uncoated · 3 Flute · Aluminium
Non-Ferrous · 3F
nACo · 4 Flute · HRC65
nACo · 4 Flute · HRC65
HRC65 · 4F
ø2mm / L2 6mm← All Square End Millsø3mm / L2 8mm

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