4-Flute · TiSiN · HRC55 · Standard Reach

11mm 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 11mmL2 25mmD2 12mmOAL 75mm4 FlutesTiSiN CoatingHRC55Standard ReachMOQ 1 pc

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Reference price

$91.59

Ref. factory price (USD)

Based on rod stock cost as of 2026-03-31. Final quotation may differ.

TiSiN · 4 Flute · HRC55

11mm 4F TiSiN Square EM

L2 25mm · D2 12mm · OAL 75mm

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)11 mm
Flute Length (L2)25 mm
Shank Diameter (D2 h6)12 mm
Overall Length (L1)75 mm
Number of Flutes4
CoatingTiSiN Titanium Silicon Nitride
Max Material HardnessHRC55
Reach CategoryStandard (L1/D1 = 6.8×)
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

11mm 4-flute TiSiN solid carbide square end mill — L2=25mm OAL=75mm
D1 h7
11mm
L2
25mm
D2 h6
12mm
L1
75mm
Flutes
4
Reach
Standard

Where This Tool Excels

11mm TiSiN 4F — Recommended Applications

  • ▸Large mould and die cavity machining
  • ▸Structural component pocketing
  • ▸Gearbox and transmission case features
  • ▸Wind turbine component contouring
Machining Tip: ø11mm produces significant cutting forces. Ensure workholding clamping force is adequate. In HRC55 steel, reduce axial DOC to 0.5×D for first passes to verify fixturing stability before committing to full depth.

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

ø11mm / L2 25mm — 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
ø10mm / L2 55mm← All Square End Millsø12mm / L2 30mm

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