Designed for stable medium-depth drilling in stainless steel materials, this 5xD carbide drill combines imported submicron carbide, heat-resistant coating, optimized point geometry, and reinforced flute structure to reduce work hardening, improve chip evacuation, control cutting heat, and maintain reliable hole accuracy in deeper stainless steel drilling applications.
The 5xD carbide drill for stainless steel is developed for medium-depth hole machining where work hardening, cutting heat, chip control, and hole straightness are critical. Compared with 3xD short-hole drilling, 5xD stainless steel drilling requires more stable chip evacuation, stronger tool rigidity, and better heat control over a longer drilling depth.
Stainless steel materials such as 304, 316L, 17-4PH, and duplex stainless steel have high toughness, poor thermal conductivity, and strong work-hardening tendency. During 5xD drilling, chips must be removed smoothly to prevent heat buildup, cutting edge overload, and unstable hole quality.
This drill is manufactured from imported MG grade 0.8 μm submicron tungsten carbide rods with 10% cobalt content. With optimized point geometry, reinforced flute structure, self-developed high-performance coating, and controlled edge passivation, it helps reduce drill walking, improve chip evacuation, and maintain reliable drilling performance in stainless steel components.
| Item | Description | Item | Description |
|---|---|---|---|
| Product Name | 5xD Carbide Drill for Stainless Steel | Drill Type | Solid Carbide Drill |
| Hole Depth | 5xD | Application | Medium-depth stainless steel drilling |
| Workpiece Material | 304, 316L, 17-4PH, duplex stainless steel, stainless steel alloys | Carbide Material | Imported MG Grade 0.8 μm Tungsten Carbide |
| Cobalt Content | 10% | Helix Angle | 30° |
| Point Angle | 138.9° | Rake Angle | 16° |
| Negative Chamfer | -6° | Core Design | 30–40% Variable Core Diameter |
| Back Taper | 0.8° | Coating | Self-Developed High-Performance Coating |
| Coating Hardness | 2000–4000 HV | Friction Coefficient | 0.05–0.15 |
| Coolant Type | Internal Coolant / External Coolant Available | Tool Life | Up to 80–100 Meters Under Suitable Machining Conditions |
| Service | Regrinding and Customization Available |
| Drill Diameter (mm) | Flute Length (mm) | Shank Diameter (mm) | Overall Length (mm) | Hole Depth | Coolant Type | Availability |
|---|---|---|---|---|---|---|
| D3.00-D3.90 | 28 | 6 | 66 | 5xD | Internal / External | Standard |
| D4.00-D4.70 | 36 | 6 | 74 | 5xD | Internal / External | Standard |
| D4.80-D6.00 | 44 | 6 | 82 | 5xD | Internal / External | Standard |
| D6.10-D8.00 | 53 | 8 | 91 | 5xD | Internal / External | Standard |
| D8.10-D10.0 | 61 | 10 | 103 | 5xD | Internal / External | Standard |
| D10.1-D12.0 | 71 | 12 | 118 | 5xD | Internal / External | Standard |
| D12.1-D14.0 | 77 | 14 | 124 | 5xD | Internal / External | Standard |
| D14.1-D16.0 | 83 | 16 | 133 | 5xD | Internal / External | Standard |
| D16.1-D18.0 | 93 | 18 | 143 | 5xD | Internal / External | Standard |
| D18.1-D20.0 | 101 | 20 | 153 | 5xD | Internal / External | Standard |
Key Features
Made from imported 0.8 μm submicron carbide with 10% cobalt for toughness and edge strength.
Helps maintain cutting stability in medium-depth stainless steel drilling applications.
Self-developed coating with 2000–4000 HV hardness and low friction improves heat resistance.
Controlled passivation strengthens the cutting edge and reduces wear during longer drilling cycles.
30° helix and 138.9° point angle support stable penetration and accurate hole positioning.
Split-point design helps reduce drill walking and minimize work hardening during entry.
16° rake angle and variable core design improve rigidity and chip evacuation in 5xD drilling.
Negative chamfer and back taper help protect the edge, control chips, and maintain hole quality.
This 5xD carbide drill for stainless steel is suitable for medium-depth hole machining in CNC machining centers and production drilling applications. It is especially useful for stainless steel components where work hardening, heat buildup, chip evacuation, hole straightness, and batch consistency must be controlled.
Send us your material and hole requirements. Our team will recommend the right drill solution.
Landun CNC Tool is a carbide drill manufacturer focused on precision solid carbide drills and custom carbide drill solutions, supported by advanced grinding, strict inspection, and consistent edge preparation.
Production Facility
Geometry Accuracy Control
Edge Inspection Magnification
Edge Passivation Control
Our carbide drills are ground on German WALTER 5-axis grinding machines for sharp cutting edges, stable accuracy, and smooth drilling performance.
We use WALTER HELICHECK PLUS for contour inspection, keeping profile and radius control within 3 μm for reliable geometric precision.
Each carbide drill is inspected at 300x magnification to check edge quality and avoid chipping or saw-tooth defects before shipment.
Manual drill point honing and automatic rubber-bonded diamond abrasive polishing help improve tool life and control edge consistency within ±0.003 mm.
Common Questions
5xD means the drill is designed for hole depths up to 5 times the drill diameter.
Yes. This drill is designed for stainless steel drilling, helping reduce work hardening, improve chip evacuation, control cutting heat, and maintain stable hole quality.
A 3xD drill is mainly used for short-hole drilling, while a 5xD drill is designed for deeper holes that require better chip evacuation, stronger rigidity, improved heat control, and more stable hole straightness.
It is suitable for 304, 316L, 17-4PH, duplex stainless steel, austenitic stainless steel, martensitic stainless steel, and precipitation hardening stainless steel under suitable machining conditions.
Yes. Internal coolant is recommended when better heat control, chip evacuation, and hole quality are required. External coolant versions are also available depending on machine conditions and drilling requirements.
Yes. We support customization based on drawings, stainless steel grade, diameter, hole depth, coolant method, coating requirement, and drilling application.
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