4-Flute · TiSiN · R0.3mm · HRC55 · Standard Reach

2mm 4-Flute R0.3mm TiSiN Solid Carbide Corner Radius End Millfor HRC55 Steel & Stainless

TiSiN-coated 4-flute corner radius end mills combine the rigidity of a square end mill with corner geometry that reduces stress concentration and micro-chipping on hardened surfaces up to HRC55. The corner radius distributes cutting load across a wider arc at entry, dramatically extending tool life versus sharp-corner tools in steel and stainless steel shoulder milling and semi-finish passes. TiSiN hardness > 3,500 HV resists abrasion at continuous contact conditions.

R0.3mmD1 2mmL2 6mmD2 4mmOAL 50mm4 FlutesTiSiNHRC55Standard ReachMOQ 1 pc

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Richtpreis

6,74 €

Richtpreis Werk (EUR)

Basierend auf Stabmaterial-Stand per 2026-03-31. Endgültiges Angebot kann abweichen.

TiSiN · 4 Flute · HRC55

2mm 4F R0.3mm TiSiN

L2 6mm · D2 4mm · OAL 50mm

Standard Reach · HRC55

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✓ Factory direct pricing

✓ MOQ 1 piece, ships 1–5 days

✓ Custom radius in 0.1mm increments

Full Dimensions

Technical Specifications

Corner Radius0.3 mm
Cutter Diameter (D1 h7)2 mm
Flute Length (L2)6 mm
Shank Diameter (D2 h6)4 mm
Overall Length (L1)50 mm
Number of Flutes4
End GeometryCorner Radius (Bull Nose)
CoatingTiSiN Titanium Silicon Nitride
Max Material HardnessHRC55
Reach CategoryStandard (L1/D1 = 25.0×)
Helix Angle30°–35°
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 · R0.3mm

2mm 4-flute R0.3mm TiSiN corner radius end mill — L2=6mm OAL=50mm
Corner R
0.3mm
D1 h7
2mm
L2
6mm
D2 h6
4mm
L1
50mm
Reach
Standard

R0.3mm Corner Geometry

Light edge protection for tight-tolerance pocket corners

  • ▸Prevents corner micro-fracture in interrupted cuts
  • ▸Works within tight pocket radius tolerances (e.g. R0.3 ± 0.05mm)
  • ▸Preferred radius for watch and instrument component pockets
  • ▸Usable on features requiring clean corner breaks in cast iron
Radius Selection Tip: R0.3mm suits precision pockets where a larger radius would violate the design fillet spec. In HRC55 steel, this radius absorbs chip impact without generating visible corner burrs. Verify pocket design tolerance before specifying — most CAD models default to R0.5mm.

ø2mm Applications

2mm TiSiN — Where This Tool Fits

  • ▸Precision instrument and watch component features
  • ▸Medical device micro-pocket machining
  • ▸Die insert fine detail features
  • ▸Electronic connector pocket profiling
Machining Tip: ø2mm corner radius end mills need ≤ 0.003mm spindle runout. In HRC55 steel, use 0.01–0.04 mm/tooth chip load; the corner radius geometry reduces tool tip stress allowing slightly higher chip load than equivalent sharp-corner tools.

Coating Performance

TiSiN on Corner Radius Geometry

  • ▸TiSiN hardness > 3,500 HV on curved corner arc geometry
  • ▸Prevents micro-chipping at re-entry in interrupted shoulder milling
  • ▸Low friction for reduced built-up edge in stainless steel shoulder cuts
  • ▸Dry, MQL, or flood coolant — all environments supported
ISO PISO MISO KTiSiN corner radius end mill4 flute bull nose end mill HRC55corner radius carbide end mill steelradius end mill semi-finish milling

Same ø2mm Diameter, Other Radii

TiSiN · 4 Flute · HRC55 — Other Corner Radii at ø2mm

R0.2mm
L2 6mm
R0.5mm
L2 6mm

Same Dimensions, Other Coatings

ø2mm R0.3mm / L2 6mm — Other Variants

nACo · 4 Flute · HRC65
nACo · 4 Flute · HRC65
HRC65 · 4F · R0.3mm
Uncoated · 4 Flute · Aluminium
Uncoated · 4 Flute · Aluminium
Non-Ferrous · 4F · R0.3mm
ø1.5mm R0.3mm / L2 4mm← All Corner Radius End Millsø2.5mm R0.3mm / L2 7mm

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