4-Flute · Uncoated · R1mm · Aluminium · Standard Reach

8mm 4-Flute R1mm Uncoated Solid Carbide Corner Radius End Millfor Aluminium & Non-Ferrous Fillet Milling

Name: 8mm 4-Flute R1mm Uncoated Corner Radius End Mill for Aluminium
Brand: Solid Carbide Direct
SKU: SCD-CREM-UNCOATED-4F-D8-R1-L50
Price: 84.06 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.

R1mmD1 8mmL2 50mmD2 8mmOAL 150mm4 FlutesUncoatedNon-FerrousStandard ReachMOQ 1 pc

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Reference price

$84.06

Ref. factory price (USD)

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

8mm 4F R1mm Uncoated

L2 50mm · D2 8mm · OAL 150mm

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	1 mm
Cutter Diameter (D1 h7)	8 mm
Flute Length (L2)	50 mm
Shank Diameter (D2 h6)	8 mm
Overall Length (L1)	150 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 = 18.8×)
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 · R1mm

Corner R

1mm

D1 h7

8mm

50mm

D2 h6

8mm

150mm

Reach

Standard

R1mm Corner Geometry

General-purpose fillet milling — strongest corner geometry for heavy passes

▸Maximum radial support on cutting edge during heavy DOC passes
▸Ideal for semi-finish passes before a smaller-radius finishing pass
▸Produces clean R1mm fillets in one pass — no secondary operation
▸Recommended for die cast tooling, injection mould cores, and structural pockets

Radius Selection Tip: R1mm provides the highest edge strength of commonly used radii. In aluminium alloy, DOC can be increased 20–30% over R0.5mm without chatter. Use for semi-finish passes that must leave a consistent stock allowance before a ball-nose finish.

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