HRC45 Custom Solid Carbide Roughing End Mill for Steel
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.
HRC45 Carbide Roughing End Mill Overview
This HRC45 4-flute solid carbide roughing end mill is designed for efficient stock removal in carbon steel, alloy steel, mold steel and selected pre-hardened steel up to approximately HRC45. Its serrated roughing-edge geometry divides the cutting load into smaller chips, helping control cutting resistance during high-engagement machining. The four-flute construction provides a rigid tool core and multiple cutting contacts for rough slotting, side milling, pocket roughing and profile machining. Standard Ø1–Ø20 mm reference sizes and drawing-defined custom configurations are available.
Up to HRC45
4-Flute Roughing
Ø1–Ø20 mm
Steel Roughing
Steel-Roughing Features
Serrated Roughing Edge
The wave-edge profile divides the removed material into smaller chips and helps reduce continuous cutting resistance during rough machining.
Rigid 4-Flute Construction
Four flutes provide a strong tool core and multiple cutting contacts for stable slotting, side milling and pocket roughing.
Fine-Grain Solid Carbide
The carbide substrate combines cutting-edge hardness with core strength for repeat-production steel machining.
Application-Matched Coating
AlTiN, TiAlN, TiSiN or another coating can be selected according to the steel grade, hardness, cutting temperature and coolant strategy.
Applications & Materials
Recommended for rough slotting, side milling, pocket roughing, profiling and high-engagement material removal on CNC machining centers and milling machines. Cutting parameters should be adjusted according to the tool diameter, flute length, workpiece hardness, radial engagement, axial depth and machine rigidity.
P Carbon Steel
P Alloy Steel
P Tool & Mold Steel
Pre-Hardened Steel up to HRC45
Product Details
HRC45 Roughing End Mill Specifications
Technical configuration and standard reference sizes for the HRC45 4-flute solid carbide roughing end mill. Dimensions are shown in millimeters. Final size availability, carbide grade, coating and cutting geometry should be confirmed according to the workpiece material and machining conditions.
| PARAMETER | STANDARD CONFIGURATION |
|---|---|
| Product Type | Solid carbide roughing end mill |
| Cutting Profile | Serrated wave-edge roughing geometry |
| Substrate | Fine-grain solid carbide |
| Flute Count | 4 flutes |
| Cutting Diameter | Ø1–Ø20 mm reference range |
| Shank Diameter | Ø4–Ø20 mm or drawing-defined configuration |
| Overall Length | 50–100 mm standard reference sizes; extended lengths can be reviewed separately |
| Helix Angle | 30°, 35° or application-specific geometry |
| Coating Options | AlTiN, TiAlN, TiSiN, AlTiSiN, TiN or application-specific coating |
| Target Hardness | Steel machining up to approximately HRC45 under suitable conditions |
| Main Applications | Rough slotting, side milling, pocket roughing, profiling and high-engagement material removal |
| Machine Compatibility | CNC machining centers and milling machines |
Standard Reference Sizes
D = cutting diameter, L1 = flute length, d = shank diameter and L = overall length. The listed sizes are reference configurations; stock availability should be confirmed before ordering.
| SPECIFICATION | D | L1 | d | L | FLUTES |
|---|---|---|---|---|---|
| D1–D4 × L1 × d4 × 50L | 1–4 | 3 / 6 / 9 / 12 | 4 | 50 | 4 |
| D4 × 16 × d4 × 75L | 4 | 16 | 4 | 75 | 4 |
| D4 × 20 × d4 × 100L | 4 | 20 | 4 | 100 | 4 |
| D6 × 15 × d6 × 50L | 6 | 15 | 6 | 50 | 4 |
| D6 × 24 × d6 × 75L | 6 | 24 | 6 | 75 | 4 |
| D6 × 30 × d6 × 100L | 6 | 30 | 6 | 100 | 4 |
| D8 × 20 × d8 × 60L | 8 | 20 | 8 | 60 | 4 |
| D8 × 25 × d8 × 75L | 8 | 25 | 8 | 75 | 4 |
| D8 × 35 × d8 × 100L | 8 | 35 | 8 | 100 | 4 |
| D10 × 25 × d10 × 75L | 10 | 25 | 10 | 75 | 4 |
| D10 × 40 × d10 × 100L | 10 | 40 | 10 | 100 | 4 |
| D12 × 35 × d12 × 75L | 12 | 35 | 12 | 75 | 4 |
| D12 × 45 × d12 × 100L | 12 | 45 | 12 | 100 | 4 |
| D14 × 45 × d14 × 100L | 14 | 45 | 14 | 100 | 4 |
| D16 × 45 × d16 × 100L | 16 | 45 | 16 | 100 | 4 |
| D18 × 45 × d18 × 100L | 18 | 45 | 18 | 100 | 4 |
| D20 × 45 × d20 × 100L | 20 | 45 | 20 | 100 | 4 |
Carbide Grade Options
Different carbide grades can be reviewed according to the target hardness, cutting load and required balance between wear resistance and toughness.
| GRADE | GRAIN SIZE | COBALT CONTENT | FLEXURAL STRENGTH |
|---|---|---|---|
| HRC45 | 0.8 μm | 10% | 3320 N/mm² |
| HRC55 | 0.6 μm | 10% | 4000 N/mm² |
| HRC60 | 0.5 μm | 12% | 4300 N/mm² |
| HRC65 | 0.4 μm | 12% | 4300 N/mm² |
The listed carbide properties are supplier reference values. Final carbide-grade selection is confirmed according to the application and production batch.
Coating Options
Coating selection should be based on the workpiece grade, hardness, cutting temperature, coolant method and machining engagement rather than coating color alone.
| COATING | COLOR | HARDNESS | THICKNESS | OXIDATION TEMPERATURE | FRICTION COEFFICIENT |
|---|---|---|---|---|---|
| AlTiN | Black | 3300 HV | 2.5–3 μm | 900°C | 0.30 |
| TiAlN | Violet | 2800 HV | 2.5–3 μm | 900°C | 0.30 |
| TiSiN | Bronze | 3600 HV | 3 μm | 1000°C | 0.45 |
| AlTiSiN | Blue | 4000 HV | 4 μm | 1200°C | 0.40 |
| TiN | Gold | 2500 HV | 2.5–3 μm | 600°C | 0.40 |
Coating properties are reference values and may vary by coating supplier, coating structure and production batch.
HRC45 Carbide Roughing End Mill Customization
This 4-flute solid carbide roughing end mill can be configured according to the required cutting diameter, flute length, shank diameter, overall length, serration profile, helix angle, carbide grade and coating. Its wave-edge cutting geometry divides the cutting load and produces shorter chips during heavy stock removal in carbon steel, alloy steel, mold steel and selected pre-hardened steel up to approximately HRC45. Standard, long-flute, extended-length and drawing-defined configurations are available for distributors, tooling brands and OEM customers.
| PARAMETER | MANUFACTURING CAPABILITIES |
|---|---|
| Cutting Diameter | Reference cutting diameters from Ø1–Ø20 mm, with intermediate and drawing-defined non-standard diameters available after technical review |
| Flute Count | Standard 4-flute construction with a rigid tool core and multiple cutting contacts for rough slotting, side milling and pocket machining |
| Roughing-Tooth Profile | Fine, medium or application-matched serrated wave-edge geometry can be reviewed according to the tool diameter, required chip size, cutting load and remaining finishing allowance |
| Flute Length | Standard, long-flute and drawing-defined cutting lengths can be supplied according to the axial depth, workpiece geometry and required machining reach |
| Overall Length | Reference overall lengths of 50, 60, 75 and 100 mm, with selected extended-length configurations available for deeper or less accessible features |
| Shank Configuration | Precision cylindrical shanks from Ø4–Ø20 mm, with custom shank diameter, reduced-neck geometry and clamping length reviewed according to the holder and tool overhang |
| Helix Angle | 30° or 35° reference helix options, with application-specific geometry selected according to the workpiece material, cutting engagement, chip formation and machine rigidity |
| End Geometry | Square-end roughing geometry for slotting, pocketing and shoulder roughing, with corner condition and end-face configuration confirmed by the selected tool design |
| Cutting-Edge Preparation | Rake angle, relief geometry, edge honing, end-face grinding and cutting-edge strength can be matched to the steel grade, hardness and roughing load |
| Carbide Grade | Fine-grain carbide grade selected to provide an application-matched balance of cutting-edge wear resistance, core strength and resistance to chipping |
| Coating Selection | AlTiN, TiAlN, TiSiN, AlTiSiN or another application-specific coating selected according to the workpiece grade, hardness, cutting temperature and coolant method |
| Workpiece Materials | Configurations can be reviewed for carbon steel, alloy steel, tool steel, mold steel and selected pre-hardened steel up to approximately HRC45 |
| Roughing Applications | Suitable configurations are available for rough slotting, pocket roughing, side milling, profiling and other high-engagement stock-removal operations |
| Dimensional Tolerance | Drawing-defined control of cutting diameter, flute length, shank diameter, overall length, runout and roughing-edge geometry, with critical tolerance requirements confirmed before production |
| OEM & Private Label | Customer logos, tool codes, dimensions, coating identification and batch numbers can be laser marked; custom labels, protective tubes and private-label packaging are also available |
OEM & Private Label Services
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.
FAQ & Downloads
Review common product, application and ordering questions for the HRC45 4-flute solid carbide roughing end mill, then access the current end mill catalog and starting cutting-data guide.
Product & Application FAQs
Selection and application guidance for efficient rough machining of steel.
What materials is this HRC45 roughing end mill designed to machine?
It is primarily configured for carbon steel, alloy steel, tool steel, mold steel and selected pre-hardened steel up to approximately HRC45. The coating and cutting parameters should be selected according to the exact material grade, hardness, machining engagement and machine rigidity.
Does HRC45 mean every tool can machine steel at exactly 45 HRC?
HRC45 describes the product-series positioning and approximate upper target range under suitable machining conditions. Actual suitability depends on the steel grade, operation, tool diameter, cutting data, holder condition, tool overhang, machine rigidity and coolant strategy.
What is the purpose of the serrated roughing edge?
The serrated wave-edge geometry divides the removed material into smaller chips and interrupts the cutting load. This supports chip control and can reduce continuous cutting resistance during high-engagement roughing compared with a conventional smooth-edge finishing end mill.
Which machining operations are suitable for this 4-flute roughing end mill?
It is suitable for rough slotting, side milling, pocket roughing, profiling and other high-engagement stock-removal operations. Axial depth, radial engagement and feed should be adjusted according to the tool diameter, flute length, workpiece hardness and machine rigidity.
Can this roughing end mill produce the final finished surface?
A serrated roughing edge normally leaves a characteristic wave pattern on the machined surface. Where a smooth dimensional finish is required, leave suitable finishing stock and complete the operation with a smooth-edge square, corner-radius or ball-nose finishing end mill.
Can this end mill be used for full-width slotting?
Full-width slotting may be possible when cutting data, axial depth and chip evacuation are properly controlled. Because the four-flute construction provides less chip space than a two- or three-flute tool, reduce the engagement when necessary and maintain effective air blast or coolant delivery.
Which coating should be selected for steel roughing?
AlTiN, TiAlN, TiSiN, AlTiSiN or another application-specific coating may be selected according to the steel grade, hardness, cutting temperature and coolant method. Coating selection should be matched with the carbide substrate and cutting-edge preparation rather than chosen by color alone.
Ordering & Customization FAQs
Information for distributors, tooling brands and customers requesting standard or drawing-based roughing end mills.
What standard sizes are available?
The reference series covers selected cutting diameters from Ø1 to Ø20 mm, shank diameters from Ø4 to Ø20 mm and overall lengths from 50 to 100 mm. Short, long-flute and extended-length configurations are available for selected diameters. Final stock availability should be confirmed before ordering.
Can non-standard dimensions or roughing geometry be manufactured?
Yes. Cutting diameter, flute length, shank diameter, overall length, reduced-neck geometry, roughing-tooth profile, helix angle, cutting-edge preparation and coating can be reviewed according to the drawing and machining application.
Can I order samples before placing a bulk order?
Yes. Samples can be reviewed according to the required diameter, flute length, coating and quantity. For a non-standard tool, the drawing, tolerance, sample quantity, production requirements and delivery cost must be confirmed before manufacturing.
What is the lead time?
Available standard configurations can normally be shipped within 1–3 working days after order confirmation. Lead time for custom dimensions, special roughing geometry or non-standard coatings is confirmed separately according to the drawing, quantity and current production schedule.
Are OEM marking and private-label packaging available?
Yes. Customer logos, tool codes, cutting dimensions, carbide or coating 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 hardness, cutting diameter, flute length, shank diameter, overall length, roughing operation, axial depth ap, radial engagement ae, holder type, coolant method, coating preference, dimensional tolerance and order quantity. A tool drawing is recommended for non-standard configurations.
Technical Downloads
Access current product-range information and starting cutting references for solid carbide roughing end mill selection.
Solid Carbide End Mills Catalog
End mill families, hardness series, roughing geometries, 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 tool diameter, flute length, workpiece hardness, axial and radial engagement, 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.
