4-Flute · Uncoated · R0.5mm · Aluminium · Standard Reach

8mm 4-Flute R0.5mm Uncoated Solid Carbide Corner Radius End Millfor Aluminium & Non-Ferrous Fillet Milling

Name: 8mm 4-Flute R0.5mm Uncoated Corner Radius End Mill for Aluminium
Brand: Solid Carbide Direct
SKU: SCD-CREM-UNCOATED-4F-D8-R05-L25
Price: 42.03 USD
Availability: InStock

Uncoated (bright-polished) corner radius end mills are optimised for aluminium alloys, copper, brass, and graphite — any material where coatings cause adhesion. The corner radius produces clean fillet radii in pockets and profiles without a separate deburring step. Polished flute surfaces prevent built-up edge (BUE) that would otherwise ridge the fillet radius in soft metals. 4 flutes maximise feed rate and achieve Ra < 0.8µm in aluminium at high spindle speeds. Radius options from R0.2–R2.5mm cover all standard fillet requirements.

R0.5mmD1 8mmL2 25mmD2 8mmOAL 75mm4 FlutesUncoatedNon-FerrousStandard ReachMOQ 1 pc

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Reference price

$42.03

Ref. factory price (USD)

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

8mm 4F R0.5mm Uncoated

L2 25mm · D2 8mm · OAL 75mm

Standard Reach · Aluminium

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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	0.5 mm
Cutter Diameter (D1 h7)	8 mm
Flute Length (L2)	25 mm
Shank Diameter (D2 h6)	8 mm
Overall Length (L1)	75 mm
Number of Flutes	4
End Geometry	Corner Radius (Bull Nose)
Coating	Uncoated Bright polished
Max Material Hardness	N/A (non-ferrous optimised)
Reach Category	Standard (L1/D1 = 9.4×)
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

Uncoated · 4 Flute · Aluminium · R0.5mm

Corner R

0.5mm

D1 h7

8mm

25mm

D2 h6

8mm

75mm

Reach

Standard

R0.5mm Corner Geometry

Industry standard fillet — most common CNC pocket and shoulder radius

▸Longest tool life in class for shoulder milling and pocketing
▸Matches ISO standard pocket corner specification R0.5mm
▸Reduces cutting forces by ~20% vs sharp corner in hardened steel
▸Available in full standard size range including long-reach variants

Radius Selection Tip: R0.5mm is the most universal specification. In aluminium alloy, it provides the best balance of fillet feature accuracy, tool life, and chatter resistance. Recommended for all new mould base and structural component programmes unless design specifically requires R < 0.5mm.

ø8mm Applications

8mm Uncoated — Where This Tool Fits

▸Automotive component shoulder milling
▸Pump body and valve pocket features
▸Gearbox cover profiling
▸Large mould runner channel machining

Machining Tip: ø8mm is the production sweet spot for corner radius end mills. In aluminium alloy, radial engagement can be 30–50% of D for profiling, with DOC up to 1×D for semi-finish passes. The corner radius reduces chatter significantly at this diameter.

Coating Performance

Uncoated on Corner Radius Geometry

▸Mirror-polished corner geometry — zero aluminium adhesion on curved arc
▸Eliminates BUE that would deform fillet radius in soft alloys
▸Clean fillet radii in aluminium — no post-milling deburring required
▸Works in copper, brass, graphite, and CFRP composite materials
▸Use with air blast or light oil mist at 10,000–30,000 RPM

ISO Nuncoated corner radius end mill aluminiumbull nose end mill non-ferrous4 flute radius end mill aluminiumcorner radius carbide end mill copper brass

Same Diameter & Radius, Different Reach