4-Flute · TiSiN · R2mm · HRC55 · Standard Reach

6mm 4-Flute R2mm TiSiN Solid Carbide Corner Radius End Millfor HRC55 Steel & Stainless

Name: 6mm 4-Flute R2mm TiSiN Corner Radius End Mill for HRC55
Brand: Solid Carbide Direct
SKU: SCD-CREM-TISIN-4F-D6-R2-L30
Price: 32.53 USD
Availability: InStock

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.

R2mmD1 6mmL2 30mmD2 6mmOAL 100mm4 FlutesTiSiNHRC55Standard ReachMOQ 1 pc

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Reference price

$32.53

Ref. factory price (USD)

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

6mm 4F R2mm TiSiN

L2 30mm · D2 6mm · OAL 100mm

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 Radius	2 mm
Cutter Diameter (D1 h7)	6 mm
Flute Length (L2)	30 mm
Shank Diameter (D2 h6)	6 mm
Overall Length (L1)	100 mm
Number of Flutes	4
End Geometry	Corner Radius (Bull Nose)
Coating	TiSiN Titanium Silicon Nitride
Max Material Hardness	HRC55
Reach Category	Standard (L1/D1 = 16.7×)
Helix Angle	30°–35°
Substrate	K10/K20 Ultra-Fine Grain Carbide
Shank Tolerance	h6
MOQ	1 piece
Lead Time (standard)	1–5 business days
Lead Time (custom)	5–15 business days

TiSiN · 4 Flute · HRC55 · R2mm

Corner R

2mm

D1 h7

6mm

30mm

D2 h6

6mm

100mm

Reach

Standard

R2mm Corner Geometry

Heavy-corner fillet for energy, marine, and structural components

▸Produces R2mm fillets without interpolation — direct plunge-to-shoulder possible
▸Widely used in wind turbine nacelle components and frame pockets
▸Reduces stress concentration on R2mm structural fillets vs machined-in ball nose
▸Long-reach variants for deep pocket access (L1 up to 150mm)

Radius Selection Tip: R2mm at this tool diameter means a significant portion of the cutting edge is curved. In HRC55 steel, reduce feed rate 10–15% vs R1mm to maintain consistent chip load across the radius. Trochoidal milling strategies work well for R2mm pocketing.

ø6mm Applications

6mm TiSiN — Where This Tool Fits

▸Mould cavity pocket semi-finishing
▸Precision aerospace part profiling
▸Hydraulic manifold pocket corners
▸Small fixture and jig features

Machining Tip: ø6mm with corner radius provides the best size-to-stiffness ratio for die and mould work. In HRC55 steel, the corner radius allows 3–5×D axial depth without the micro-chipping that limits sharp-corner tools. Ideal for continuous shoulder milling passes.

Coating Performance