HRC65 Solid Carbide Corner Radius End Mill for Hardened Steel
HRC65 solid carbide corner radius end mill for hard metal processing. Strong edge strength, stable cutting, and customizable ODM options for precision CNC milling.
⚙️ Product Configurations
*Corner Radius Options: R0.2–R6 (custom available)
*Diameter Range: Standard and custom sizes available
*Flute Count: 4 Flute (standard)
*Coating Options: Uncoated / TiAlN / AlTiN / TiCN / DLC (optional)
*Helix Angle: 30° / 35° / 45° (optional)
*Tool Material: Ultra-fine grain solid carbide for high hardness machining
*Workpiece Materials: Hardened steel, tool steel, mold steel and alloy steel
*Machining Type: Profiling / contouring / finishing / cavity machining
*Router Bit Options: Custom cutting geometries available (made-to-drawing)
*Customization: Custom diameter, radius, flute length and overall length available
Consistent Quality
Consistent geometry across repeat orders.
Flexible Orders
Small batches and mixed sizes available.
OEM Support
Custom marking, labels and packaging.
Standard & Custom
Standard sizes and custom configurations.
HRC65 Solid Carbide Corner Radius End Mill Overview
The HRC65 solid carbide corner radius end mill is engineered for stable profiling, pocket finishing and semi-finishing in hardened steel, heat-treated steel, die steel and mold steel. Its 4-flute geometry provides a rigid core and consistent cutting engagement, while the corner radius reinforces the transition between the end and peripheral cutting edges. Ultra-fine-grain carbide and heat-resistant coating options support wear resistance, edge stability and repeatable surface quality in demanding mold and high-hardness machining.
Key Product Advantages
Reinforced Corner
The corner radius improves edge strength compared with a sharp-corner square end mill and supports controlled part fillets.
Rigid 4-Flute Core
Four cutting edges and a rigid core support stable side milling, profiling and finishing in hardened steel.
Heat-Resistant Coating
Application-matched coatings help resist oxidation, abrasive wear and high cutting temperatures.
Standard & Custom Supply
Diameter, radius, flute length, shank, overall length, geometry and marking can be reviewed by drawing.
Recommended Applications
Recommended for profile milling, pocket finishing, contour machining, corner finishing and controlled-engagement semi-finishing in rigid CNC machining conditions.
P Die & Mold Steel
P Tool Steel
Heat-Treated Steel
Product Details
HRC65 Corner Radius End Mill Specifications
Reference technical configuration, carbide data, coating properties and available size combinations. All dimensional values are in millimeters unless otherwise stated.
Technical Configuration
| PARAMETER | SPECIFICATION |
|---|---|
| Tool Material | Ultra-Fine-Grain Solid Carbide |
| Tool Type | Corner Radius End Mill |
| Flute Count | 4 Flutes |
| Series Positioning | Hardened-Steel Machining up to HRC65 under confirmed conditions |
| Coating Options | AlTiN / TiAlN / TiSiN / AlTiSiN or application-specific coating |
| Helix Options | 30° / 35° / 45°, subject to size and application review |
| Reference DC Range | Ø1–Ø12 mm in the listed matrix; other sizes by drawing |
| Overall Length | 50–200 mm or customized, subject to rigidity review |
| Reference Tolerance | Up to ±0.01 mm; critical dimensions confirmed by drawing |
| Primary Materials | Hardened steel / heat-treated steel / die steel / mold steel / tool steel |
Carbide & Coating Reference Data
| GRADE | GRAIN SIZE (µm) | CO (%) | FLEXURAL STRENGTH (N/mm²) |
|---|---|---|---|
| HRC45 | 0.8 | 10 | 3320 |
| HRC55 | 0.6 | 10 | 4000 |
| HRC60 | 0.5 | 12 | 4300 |
| HRC65 | 0.4 | 12 | 4300 |
| COATING | HARDNESS (HV) | THICKNESS (µm) | OXIDATION TEMP. (°C) | FRICTION COEFFICIENT |
|---|---|---|---|---|
| AlTiN | 3300 | 2.5–3 | 900 | 0.3 |
| TiAlN | 2800 | 2.5–3 | 900 | 0.3 |
| TiSiN | 3600 | 3 | 1000 | 0.45 |
| AlTiSiN | 4000 | 4 | 1200 | 0.4 |
Reference Size Matrix
Consolidated configurations from the original product information. Confirm DC, R, DCON, flute length and OAL before quotation.
| SPECIFICATION | DC | R | DCON | OAL | FLUTES |
|---|---|---|---|---|---|
| Ø1×R0.2×D4×50L | 1 | 0.2 | 4 | 50 | 4 |
| Ø1.5×R0.2×D4×50L | 1.5 | 0.2 | 4 | 50 | 4 |
| Ø2×R0.2 / R0.3 / R0.5×D4×50L | 2 | 0.2 / 0.3 / 0.5 | 4 | 50 | 4 |
| Ø2.5×R0.2 / R0.5×D4×50L | 2.5 | 0.2 / 0.5 | 4 | 50 | 4 |
| Ø3×R0.2 / R0.3 / R0.5 / R1×D3 or D4×50L | 3 | 0.2 / 0.3 / 0.5 / 1 | 3 / 4 | 50 | 4 |
| Ø4×R0.2 / R0.3 / R0.5 / R1×D4×50L | 4 | 0.2 / 0.3 / 0.5 / 1 | 4 | 50 | 4 |
| Ø5×R0.5 / R1×D6×50L | 5 | 0.5 / 1 | 6 | 50 | 4 |
| Ø6×R0.2 / R0.3 / R0.5 / R1×D6×50L | 6 | 0.2 / 0.3 / 0.5 / 1 | 6 | 50 | 4 |
| Ø6×R0.2 / R0.5 / R1×D8×60L | 6 | 0.2 / 0.5 / 1 | 8 | 60 | 4 |
| Ø8×R1.5 / R2×D8×60L | 8 | 1.5 / 2 | 8 | 60 | 4 |
| Ø10×R0.5 / R1 / R1.5 / R2 / R3×D10×75L | 10 | 0.5 / 1 / 1.5 / 2 / 3 | 10 | 75 | 4 |
| Ø12×R0.5 / R1 / R2 / R3×D12×75L | 12 | 0.5 / 1 / 2 / 3 | 12 | 75 | 4 |
Hardened-Steel Starting Reference
| WORKPIECE | HARDNESS | VC (m/min) | FZ (mm/tooth) | AP (mm) |
|---|---|---|---|---|
| Hardened Steel | 55–65 HRC | 60–100 | 0.01–0.03 | 0.05–0.30 |
HRC65 Corner Radius End Mill Customization
Cutting diameter, corner radius, flute length, overall length, shank configuration, helix angle, cutting-edge preparation and coating can be configured for hardened-steel machining. Standard configurations use a rigid 4-flute geometry, while non-standard dimensions and application-specific geometry can be reviewed according to the steel grade, actual hardness, milling operation, tool engagement and required dimensional accuracy.
| PARAMETER | MANUFACTURING CAPABILITIES |
|---|---|
| Cutting Diameter | Reference sizes from Ø1–Ø12 mm, with selected intermediate and non-standard diameters manufactured according to the approved drawing |
| Corner Radius | Standard and custom corner-radius values can be matched to the required component fillet, machining allowance, corner strength and finished geometry |
| Flute Count | Rigid 4-flute configuration for stable profiling, contour milling, pocket finishing and controlled-engagement semi-finishing in hardened steel |
| Flute & Overall Length | Standard, long-reach and drawing-defined flute-length and overall-length configurations, with overall lengths up to 200 mm reviewed according to tool rigidity and machining depth |
| Shank Configuration | Precision cylindrical shank with standard or drawing-defined shank diameter, neck geometry, relief length and clamping length |
| Helix Angle | 30°, 35° or 45° helix configurations can be reviewed according to the steel hardness, cutting load, chip formation and required edge strength |
| Corner Geometry | Precision-ground corner transition designed to reinforce the junction between the end cutting edge and peripheral cutting edge while producing the required part fillet |
| Edge Preparation | Cutting-edge preparation, rake angle, relief geometry and end-face grinding can be matched to the workpiece hardness, cutting load and required surface condition |
| Coating Selection | AlTiN, TiAlN, TiSiN, AlTiSiN or another application-specific coating selected according to the steel grade, hardness, cutting temperature and coolant conditions |
| Milling Application | Geometry can be reviewed for profile milling, pocket finishing, contour machining, corner finishing and controlled-engagement semi-finishing |
| Dimensional Tolerance | Drawing-defined control of cutting diameter, corner radius, flute length, shank diameter, overall length and tool runout, with reference tolerances up to ±0.01 mm |
OEM & Private Label Services
OEM manufacturing and private-label supply options are available for industrial distributors, tooling brands and repeat-production customers. Laser identification, product labels, protective packaging and coating presentation can be configured according to the approved HRC65 corner radius end mill specification and order requirements.
Laser Etching
Customer logos, tool codes, cutting diameter, corner radius, hardness series, coating identification and batch numbers can be marked according to the available shank area.
Custom Labels & Packaging
Individual protective tubes, branded labels, specification details, coating information, colored tubes and private-label packaging can be supplied.
Commercial Terms
MOQ, sample evaluation, custom-size trials, repeat orders and scheduled supply programs are confirmed according to the selected specification.
Technical Workflow
A structured review process is used to confirm standard, customized and private-label HRC65 corner radius end mill requirements before production.
Inquiry
Submit the steel grade, actual hardness, milling operation, required dimensions, tolerance and quantity.
Engineering
Review the carbide grade, corner radius, flute geometry, helix angle, edge preparation, coating, ap and ae.
Commercial
Confirm the quotation, MOQ, sample requirements, production schedule, packaging and delivery terms.
Production
Complete CNC grinding, corner-radius formation, cutting-edge preparation, coating and laser marking.
Quality Control
Inspect cutting diameter, corner radius, flute length, shank diameter, overall length, runout, coating and cutting edges.
Quality, Inspection & Delivery
Our solid carbide square end mills are controlled through material verification, precision grinding, in-process measurement and final inspection. Key dimensions, square-end geometry, cutting-edge condition, coating appearance and product identification are reviewed according to the approved specification or drawing before packing.
Three-Stage Quality Control
Inspection checkpoints are arranged around the manufacturing process to support dimensional consistency and repeat-order control.
Incoming Material Control
Carbide substrate grade, blank dimensions and supplied material information are checked against the production requirement.
In-Process Grinding Control
Cutting diameter, flute geometry, flute length, square-end profile and shank dimensions are monitored during CNC grinding.
Final Tool Inspection
Finished tools are reviewed for specified dimensions, runout, cutting-edge condition, coating appearance, marking and packing identification.
Key Inspection Characteristics
Inspection requirements are confirmed according to the standard product specification or the approved custom drawing.
| INSPECTION ITEM | CONTROL FOCUS | CONFIRMATION BASIS |
|---|---|---|
| Cutting Diameter (DC) | Diameter and dimensional consistency | Standard specification or approved drawing |
| Flute Length (APMX) | Effective cutting length | Confirmed product size or drawing requirement |
| Shank Diameter (DCON) | Clamping-section dimension and surface condition | Applicable shank specification |
| Overall Length (OAL) | Total tool length | Standard size matrix or approved drawing |
| Radial Runout | Concentricity between cutting section and shank | Agreed inspection requirement |
| Square-End Geometry | End-face profile, corner condition and center-cutting form | Selected tool configuration |
| Flute & Helix Profile | Flute count, helix form and grinding consistency | Approved manufacturing configuration |
| Cutting Edge & Coating | Edge condition, visible defects and coating appearance | Application-specific production requirement |
| Marking & Identification | Tool code, dimensions and batch information where applicable | Confirmed order and packaging specification |
Measurement & Batch Traceability
Optical measuring systems, tool inspection equipment and appropriate dimensional gauges are selected according to the feature being checked.
Optical Measurement
Profile and dimensional review of specified cutting features.
Runout Verification
Concentricity review based on the agreed product requirement.
Edge Inspection
Magnified review of the end face, corners and cutting-edge condition.
Batch Identification
Order, product and batch information are linked where required for repeat supply.
Protective Packaging Process
Finished end mills are protected to reduce contact between cutting edges and to support clear product identification during storage and transportation.
Bulk-Order & Export Packaging
Bulk shipments can be arranged with reinforced cartons, protective wrapping, palletized loading or export cases according to order quantity, shipment weight and agreed transportation requirements.
Delivery Coordination
Production completion, packing method and dispatch arrangements are confirmed according to the approved order. Courier, air, sea or customer-designated shipping options can be reviewed according to shipment size and destination. Final lead time is confirmed after product specifications, quantity and packaging requirements are approved.
FAQ & Downloads
Review common product, application and ordering questions for the HRC65 solid carbide corner radius end mill for hardened steel, then access the current end mill catalog and starting cutting-data guide.
Product & Application FAQs
Selection and application guidance for hardened-steel, die-steel and mold-steel machining.
What materials is this HRC65 corner radius end mill designed to machine?
It is primarily configured for hardened steel, heat-treated steel, die steel, mold steel and tool steel. Suitability for stainless steel, titanium alloys or other materials should be reviewed according to the exact grade, hardness, operation, tool size and machining conditions.
Does HRC65 mean that every tool can machine steel at exactly 65 HRC?
HRC65 describes the product-series positioning and its upper target range under selected machining conditions. Actual suitability depends on the steel grade, operation, cutting diameter, corner radius, cutting data, tool overhang, holder runout, machine rigidity and coolant strategy. Application details should be reviewed before machining near the upper hardness range.
What operations are suitable for the corner-radius design?
The corner-radius geometry is suitable for profile milling, pocket finishing, contour machining, corner finishing and controlled-engagement semi-finishing. The reinforced corner provides greater edge strength than a sharp-corner square end mill while producing a defined part fillet.
How should the corner radius be selected?
Select a corner radius equal to or smaller than the required component fillet. The final R value should also be reviewed according to the cutting diameter, machining allowance, required edge strength and finished-part geometry.
Why does this end mill use a four-flute configuration?
The four-flute geometry provides a rigid tool core and more cutting contacts per revolution. This supports stable profiling and finishing in hardened steel when radial engagement, axial depth, chip evacuation and machine rigidity are correctly controlled.
Which coating should be selected for hardened-steel machining?
AlTiN, TiAlN, TiSiN, AlTiSiN or another application-specific coating can be selected according to the steel grade, actual hardness, cutting temperature and machining conditions. The coating should be matched with the carbide grade and cutting-edge preparation rather than selected by color alone.
Ordering & Customization FAQs
Information for distributors, tooling brands and customers requesting standard or drawing-based configurations.
What reference sizes are available?
The reference size matrix covers selected cutting diameters from Ø1 to Ø12 mm with multiple corner-radius, shank-diameter and overall-length combinations. Final availability should be confirmed by cutting diameter, radius, flute length, shank diameter, overall length and coating.
Can non-standard dimensions or geometry be manufactured?
Yes. Cutting diameter, corner radius, flute length, neck geometry, shank diameter, overall length, helix angle, edge preparation and coating can be reviewed according to the drawing and machining application. Custom dimensions and tolerances are confirmed before production.
Can I order samples before placing a bulk order?
Yes. Sample orders and custom-size trials can be reviewed according to the required dimensions, carbide grade, coating and quantity. Please contact us to confirm sample availability, production cost and delivery charges.
What is the lead time?
In-stock standard configurations can normally be dispatched within 1–3 working days. Production time for custom dimensions, special corner radii, application-specific coatings, laser marking or private-label packaging is confirmed after the specification and order quantity have been reviewed.
Are OEM marking and private-label packaging available?
Yes. Customer logos, tool codes, cutting dimensions, corner-radius values, hardness-series identification and batch numbers can be laser marked according to the available shank area. Custom labels, protective tubes and private-label packaging can also be supplied.
What information is required for an accurate quotation?
Please provide the workpiece material and actual hardness, cutting diameter, corner radius, flute length, shank diameter, overall length, machining operation, axial depth ap, radial engagement ae, coating preference, tolerance requirements and order quantity. A tool drawing or component drawing is recommended for custom projects.
Technical Downloads
Access current product-range information and starting cutting references for solid carbide end mill selection.
Solid Carbide End Mills Catalog
End mill families, hardness series, flute configurations, coating options and reference sizes.
End Mill Speeds & Feeds Guide
Starting cutting speeds, chip loads, engagement guidance and adjustment notes.
Cutting data are starting references only. Adjust the values according to the exact cutting diameter, corner radius, workpiece grade, actual hardness, radial engagement, axial depth, tool overhang, holder condition and machine rigidity.
Need Sizes, Pricing or Custom Options?
Send us the required tool type, sizes, quantities, workpiece material and any OEM or custom requirements. We will confirm suitable specifications, availability, lead time and quotation details.
Drawings, size lists and reference photos are welcome.
