HRC65 4-Flute Solid Carbide Square End Mill for Hardened Steel
This 4-flute nano coated solid carbide square end mill provides excellent wear resistance, thermal stability and edge strength for reliable machining of hardened steel up to HRC65.
- ◆Nano coating provides excellent heat and wear resistance
- ◆4-flute geometry offers high rigidity and stable cutting
- ◆Designed for semi-finishing and finishing hardened steel up to HRC65
Consistent Quality
Consistent geometry across repeat orders.
Đơn hàng linh hoạt
Small batches and mixed sizes available.
OEM Support
Custom marking, labels and packaging.
Tiêu chuẩn & Theo yêu cầu
Standard sizes and custom configurations.
HRC65 4-Flute Carbide Square End Mill Overview
This HRC65-series 4-flute solid carbide square end mill is configured for finishing and semi-finishing die steel and hardened steel under stable CNC machining conditions. Its ultra-fine-grain carbide substrate, Nano-AlTiSiN coating, reinforced four-flute core and protected cutting-edge geometry support rigidity, thermal stability, wear control and dimensional consistency in the HRC50–65 application range.
Key Features
Advanced Nano-AlTiSiN Coating
Supports thermal stability up to the supplied 1100°C reference and controlled dry or high-temperature hard milling.
High-Rigidity 4-Flute Geometry
The reinforced core helps limit deflection and vibration during die-steel finishing.
Precision Edge Protection
Strengthened edge preparation is intended to reduce premature chipping under controlled hard-milling loads.
Why Choose This End Mill?
High Wear Resistance
The blue nano coating supports wear and heat resistance.
Stable Hard Milling
Four-flute geometry supports finishing stability on confirmed die steels.
Controlled Chip Flow
Flute geometry helps limit heat buildup and chip recutting.
Dimensional Accuracy
Low runout and rigid clamping support repeatable finishing results.
Recommended Applications
Mold & Die
SKD11, H13, NAK80 and comparable heat-treated steels.
Automotive Components
Selected hardened component profiles and finishing features.
Precision Parts
Finishing and semi-finishing of accurate mechanical features.
Aerospace Components
Selected high-strength features after material and process review.
Product Gallery
HRC65 Hard-Milling Video
Technical Specifications
Reference specifications for the HRC65 4-flute solid carbide square end mill for die steel and hard milling. Confirm the selected size and application before ordering.
Tool Nomenclature & Dimensions
D: Cutting Diameter CEL: Flute Length SHK: Shank Diameter OAL: Overall Length
Standard Size Matrix
| D | CEL | SHK | OAL | Flutes | Type |
|---|---|---|---|---|---|
| 1.0 | 3 | 4 | 50 | 4 | Square End |
| 2.0 | 5 | 4 | 50 | 4 | Square End |
| 3.0 | 8 | 3 / 4 | 50 | 4 | Square End |
| 4.0 | 10 | 4 | 50 | 4 | Square End |
| 6.0 | 15 | 6 | 50 | 4 | Square End |
| 8.0 | 20 | 8 | 60 | 4 | Square End |
| 10.0 | 30 | 10 | 75 | 4 | Square End |
| 12.0 | 30 | 12 | 75 | 4 | Square End |
Recommended Starting Cutting Parameters
Reference finishing data for hardened and die steel at HRC60–65. Adjust by 10–20% according to rigidity, overhang, engagement and actual hardness.
| D | Vc | Fz | Spindle n | Feed Vf |
|---|---|---|---|---|
| 4.0 mm | 70 m/min | 0.012 mm/tooth | 5,500 RPM | 264 mm/min |
| 6.0 mm | 70 m/min | 0.015 mm/tooth | 3,700 RPM | 222 mm/min |
| 8.0 mm | 70 m/min | 0.018 mm/tooth | 2,800 RPM | 202 mm/min |
| 10.0 mm | 70 m/min | 0.020 mm/tooth | 2,200 RPM | 176 mm/min |
| 12.0 mm | 70 m/min | 0.020 mm/tooth | 1,850 RPM | 148 mm/min |
Hard-Milling Setup Guidance
Rigid Clamping
Use a high-rigidity machine and precision holder with minimal runout.
Short Overhang
Keep tool extension as short as the feature permits.
Cooling Strategy
MQL or compressed air can help avoid thermal shock under confirmed conditions.
HRC65 4-Flute Square End Mill Customization
Cutting diameter, flute length, shank dimensions, overall length, four-flute geometry, reinforced core design, cutting-edge preparation and Nano-AlTiSiN coating can be reviewed according to the die-steel grade, actual workpiece hardness, finishing operation, tool engagement, machine rigidity and required dimensional accuracy. Standard and selected non-standard configurations are confirmed through technical review.
| PARAMETER | MANUFACTURING CAPABILITIES |
|---|---|
| Cutting Diameter | Reference Ø1–Ø20 mm range, with selected intermediate and non-standard diameters reviewed according to the approved tool drawing |
| Flute Count | Four-flute configuration with a reinforced core for controlled finishing, semi-finishing, side milling and shoulder-milling operations |
| Carbide Substrate | Ultra-fine-grain solid carbide selected to support cutting-edge strength, rigidity, coating stability and wear resistance in hard-milling applications |
| Flute & Overall Length | Reference flute lengths and overall lengths from 50 to 200 mm, with selected drawing-defined length and reach configurations reviewed according to tool rigidity |
| Shank Configuration | Precision cylindrical shank with reference h6 tolerance, or drawing-defined shank diameter and clamping length for high-rigidity holders |
| Core & Helix Geometry | Reinforced four-flute core with a reference 35° helix angle, or selected geometry adjustments reviewed according to material hardness, cutting engagement and chip formation |
| Square-End Geometry | Precision flat-bottom square-end profile for slots, pocket floors and 90° shoulders, with center-cutting capability confirmed by selected configuration |
| Edge Preparation | Strengthened cutting-edge preparation, end-face grinding, gash geometry and corner condition reviewed according to the actual workpiece hardness and cutting load |
| Coating Selection | Blue Nano-AlTiSiN coating configured for thermal stability, wear resistance and controlled dry or high-temperature hard-milling conditions |
| Hard-Milling Application | Geometry can be reviewed for finishing and semi-finishing SKD11, H13, NAK80 and other confirmed die steels and hardened steels within the selected application range |
| Coolant Strategy | Compressed air, MQL or another stable cooling strategy selected according to the workpiece material, coating, cutting temperature and machining conditions |
| Dimensional Tolerance | Reference h6 shank tolerance and runout below 0.005 mm, or drawing-defined requirements for cutting diameter, flute length, shank diameter, overall length and square-end geometry |
Dịch vụ OEM và nhãn hiệu riêng
OEM manufacturing and private-label supply options are available for industrial distributors, tooling brands and repeat-production customers. Laser identification, label content, protective packaging and coating presentation can be configured according to the approved product specification and order requirements.
Laser Etching
Custom logos, tool codes, cutting dimensions, coating identification and batch numbers can be marked according to the available shank area.
Custom Labels & Packaging
Individual protective tubes, product labels, specification details, colored packaging tubes and private-label packaging can be reviewed.
Commercial Terms
MOQ, sample evaluation, custom-size trials, repeat orders and scheduled supply programs are confirmed according to the selected configuration.
Technical Workflow
A structured review process is used to confirm standard, customized and private-label square end mill requirements before production.
Inquiry
Submit the material, hardness, milling operation, dimensions, tolerance and quantity.
Engineering
Review flute geometry, helix angle, edge preparation, coating, ap and ae.
Commercial
Confirm quotation, MOQ, sample requirements, production schedule and delivery terms.
Production
CNC grinding, end-face formation, edge preparation, coating and laser marking.
Quality Control
Inspect diameter, flute length, shank, runout, square-end geometry 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.
Product & Application FAQs
Answers to common questions about selecting and applying the HRC65 4-Flute Solid Carbide Square End Mill for Hardened Steel.
What materials is this square end mill designed to machine?
Why use the 4-flute configuration for this application?
What milling operations are suitable for this square-end design?
Can this tool machine every hardened steel up to HRC65?
Which coating or surface treatment should be selected?
What machining conditions should be reviewed before use?
Ordering & Customization FAQs
Information for distributors, tooling brands and customers requesting standard or application-specific configurations.
What standard sizes are available?
Can non-standard dimensions or geometry be manufactured?
Are OEM marking and private-label packaging available?
What information is required for an accurate quotation?
Technical Downloads
Use the following references for product selection and starting cutting-data review.
Solid Carbide End Mill Catalog
Review related square-end, ball-nose, corner-radius and application-specific end mill series.
End Mill Speeds & Feeds Guide
Access reference starting parameters for application review and controlled machining trials.
Need a Size or Application Review?
Send the workpiece grade, hardness, required dimensions, machining operation and quantity for configuration and quotation review.
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.
