Spiral End Mill

Scientific name	Composition	Physical properties	Features	Typical applications
Uncoated Sharp edge	Sub-micron carbide substrate (WC–Co). No coating layer, keeps the cutting edge extremely sharp.	Colour: natural carbide grey. Hardness: ~1800–2000 HV (substrate). Temp. resistance: <600°C. Wear resistance: limited vs coated tools, but best edge sharpness.	Ultra-sharp cutting edge, excellent chip evacuation, very good surface finish in soft/sticky materials.	Aluminium, copper, brass, plastics, acrylic, PVC, wood/MDF. Great for high-speed cutting and mirror-finish needs.
DLC Best for Al	Diamond-like carbon (a-C:H) coating by PVD with high sp³ bond content; very smooth surface.	Colour: black / dark grey. Hardness: ~2000–3000 HV. Friction: very low (~0.05–0.15). Temp. resistance: ~350–400°C.	Ultra-low friction + anti-adhesion. Reduces built-up edge, improves surface finish and tool life on aluminium.	Aluminium alloys (6061/7075), copper, graphite, plastics, composites. Popular choice for single flute Al machining.
TiB₂ Anti-sticking	Titanium diboride ceramic coating with strong chemical stability against aluminium adhesion.	Colour: dark grey. Hardness: ~3200–3500 HV. Friction: low vs aluminium. Temp. resistance: up to ~900°C.	Excellent anti-sticking performance on aluminium; maintains sharp edge and extends tool life at high speed.	High-speed aluminium machining, aerospace Al parts, automotive Al components, thin-wall and slotting operations.
TiAlN / AlTiN High heat	Titanium aluminium nitride coating; higher Al improves oxidation resistance for high-temperature machining.	Colour: violet / dark purple. Hardness: ~3200–3500 HV. Oxidation resistance: ~800–900°C. Friction: moderate (~0.4–0.5).	Great wear resistance and heat stability for dry/high-speed cutting. Not ideal for aluminium (may increase BUE).	Alloy steel, stainless steel, hardened steel. Suitable for slotting/deep cavity milling where heat is high.
CrN Balanced	Chromium nitride coating by PVD; good toughness and smoother surface compared with some hard coatings.	Colour: silver-grey. Hardness: ~1800–2200 HV. Friction: ~0.3 (typical). Temp. resistance: ~700°C.	Balanced wear resistance + anti-adhesion. Good all-round option for mixed materials and stable finish.	Aluminium alloys, copper alloys, mild steel, plastics. General-purpose single flute milling and finishing.
CVD Diamond Ultra wear	Polycrystalline diamond coating deposited by CVD; extremely hard and wear-resistant (non-ferrous use).	Colour: light grey. Hardness: ~8000–10000 HV. Friction: extremely low. Temp. resistance: >1000°C (non-ferrous).	Ultimate tool life and abrasion resistance. Very smooth surface; higher cost and more brittle than PVD coatings.	Graphite, CFRP/GFRP, PCB materials, high-silicon aluminium (>12% Si). Best for abrasive non-ferrous materials.

Scientific
name

Composition

Physical properties

Features

Typical applications

Uncoated
Sharp edge

Sub-micron carbide substrate (WC–Co). No coating layer, keeps the cutting edge extremely sharp.

Colour: natural carbide grey.
Hardness: ~1800–2000 HV (substrate).
Temp. resistance: <600°C.
Wear resistance: limited vs coated tools, but best edge sharpness.

Ultra-sharp cutting edge, excellent chip evacuation, very good surface finish in soft/sticky materials.

Aluminium, copper, brass, plastics, acrylic, PVC, wood/MDF. Great for high-speed cutting and mirror-finish needs.

DLC
Best for Al

Diamond-like carbon (a-C:H) coating by PVD with high sp³ bond content; very smooth surface.

Colour: black / dark grey.
Hardness: ~2000–3000 HV.
Friction: very low (~0.05–0.15).
Temp. resistance: ~350–400°C.

Ultra-low friction + anti-adhesion. Reduces built-up edge, improves surface finish and tool life on aluminium.

Aluminium alloys (6061/7075), copper, graphite, plastics, composites. Popular choice for single flute Al machining.

TiB₂
Anti-sticking

Titanium diboride ceramic coating with strong chemical stability against aluminium adhesion.

Colour: dark grey.
Hardness: ~3200–3500 HV.
Friction: low vs aluminium.
Temp. resistance: up to ~900°C.

Excellent anti-sticking performance on aluminium; maintains sharp edge and extends tool life at high speed.

High-speed aluminium machining, aerospace Al parts, automotive Al components, thin-wall and slotting operations.

TiAlN / AlTiN
High heat

Titanium aluminium nitride coating; higher Al improves oxidation resistance for high-temperature machining.

Colour: violet / dark purple.
Hardness: ~3200–3500 HV.
Oxidation resistance: ~800–900°C.
Friction: moderate (~0.4–0.5).

Great wear resistance and heat stability for dry/high-speed cutting. Not ideal for aluminium (may increase BUE).

Alloy steel, stainless steel, hardened steel. Suitable for slotting/deep cavity milling where heat is high.

CrN
Balanced

Chromium nitride coating by PVD; good toughness and smoother surface compared with some hard coatings.

Colour: silver-grey.
Hardness: ~1800–2200 HV.
Friction: ~0.3 (typical).
Temp. resistance: ~700°C.

Balanced wear resistance + anti-adhesion. Good all-round option for mixed materials and stable finish.

Aluminium alloys, copper alloys, mild steel, plastics. General-purpose single flute milling and finishing.

CVD Diamond
Ultra wear

Polycrystalline diamond coating deposited by CVD; extremely hard and wear-resistant (non-ferrous use).

Colour: light grey.
Hardness: ~8000–10000 HV.
Friction: extremely low.
Temp. resistance: >1000°C (non-ferrous).

Ultimate tool life and abrasion resistance. Very smooth surface; higher cost and more brittle than PVD coatings.

Graphite, CFRP/GFRP, PCB materials, high-silicon aluminium (>12% Si). Best for abrasive non-ferrous materials.

Each HNCarbide single flute spiral end mill is manufactured from premium fine-grain carbide and precision-ground to ensure sharp cutting edges, low runout, and consistent tool performance. The carbide spiral end mill single-flute geometry creates a larger chip pocket for smoother chip evacuation and supports higher feed rates while maintaining excellent surface quality—an advantage often seen when comparing spiral tools with straight cutting tools in aluminum and plastic machining.

To match different chip-flow directions and edge-finish requirements, we provide multiple spiral options, including down spiral end mill choices that help improve top-edge cleanliness and surface control on thin plates, laminated materials, and certain plastic parts. For specialized CNC setups, HNCarbide also supports left hand spiral end mill configurations to optimize chip direction and cutting stability depending on spindle rotation and workholding conditions.

For advanced applications, we can supply a left hand spiral right hand cut end mill for users needing a left-hand spiral flute paired with right-hand cutting action, as well as a left hand spiral left hand cut end mill for specific rotation requirements or special chip evacuation goals. These variations help reduce built-up edge, minimize material adhesion, and maintain stable cutting performance during long production runs.

With optional polished flutes and advanced coatings, our single flute tools improve wear resistance and support reliable machining at high RPM. Available in both inch and metric sizes such as 1/8, 1/4, 3/8, 1/2 inch and 3mm–20mm, including popular 1/4 shank options, these cutters are ideal for CNC routers, vertical machining centers, and high-speed milling of aluminum, plastics, copper, and soft alloys. Strict quality control ensures consistent, repeatable results across every batch.

✔ Smooth chip flow
✔ Reduced vibration
✔ Longer tool life
✔ Consistent surface finish

At HNCarbide, every shipment of single flute end mills is meticulously packaged to ensure your tools arrive intact. Each single flute spiral end mill (premium carbide spiral end mill design) is individually placed in a shock-resistant protective case and clearly labeled with full specifications—including tool type (upcut or down spiral end mill option), size (e.g., 1/8, 1/4, 3/8, 1/2 inch or 3mm–20mm), and shank options such as a 1/4 shank—then sealed in moisture-proof packaging before being boxed.

To support specialized machining requirements, labels can also indicate custom configurations such as left hand spiral end mill versions, including the left hand spiral right hand cut end mill and left hand spiral left hand cut end mill when requested, ensuring fast identification and accurate job setup on the shop floor.

For large-volume orders, cartons are reinforced with double-wall cardboard boxes or wooden crates to maximize safety during international shipping. We collaborate with reliable logistics partners to ensure your single flute end mills for CNC routers and high-speed machining are delivered quickly and securely via air freight, sea freight, or express courier—ready for stable performance and consistent results upon arrival.