Designed for stable and efficient short-hole drilling in stainless steel materials, this 3xD carbide drill combines imported submicron carbide, heat-resistant coating, optimized point geometry, and controlled edge preparation to reduce work hardening, improve chip evacuation, and maintain reliable hole accuracy in stainless steel machining.
The 3xD carbide drill for stainless steel is specially developed for short-hole drilling in stainless steel materials where work hardening, high cutting temperature, chip adhesion, and tool wear are common challenges. Compared with general steel drilling, stainless steel requires better edge stability, smoother chip evacuation, and stronger heat resistance during machining.
This drill is manufactured from imported MG grade 0.8 μm submicron tungsten carbide rods with 10% cobalt content, providing the toughness and edge strength required for high-speed stainless steel drilling. With optimized point geometry, stable flute design, self-developed high-performance coating, and controlled edge passivation, it helps reduce drill walking, improve chip breaking, and maintain consistent hole quality in stainless steel applications.
| Item | Description | Item | Description |
|---|---|---|---|
| Product Name | 3xD Carbide Drill for Stainless Steel | Drill Type | Solid Carbide Drill |
| Hole Depth | 3xD | Application | Stainless steel short-hole 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-D3.70 | 20 | 4 | 62 | 3xD | Internal / External | Standard |
| D3.80-D4.00 | 24 | 4 | 62 | 3xD | Internal / External | Standard |
| D3.00-D3.70 | 20 | 6 | 62 | 3xD | Internal / External | Standard |
| D3.80-D4.00 | 24 | 6 | 66 | 3xD | Internal / External | Standard |
| D4.80-D6.00 | 28 | 6 | 66 | 3xD | Internal / External | Standard |
| D6.10-D7.00 | 34 | 8 | 79 | 3xD | Internal / External | Standard |
| D7.10-D8.00 | 41 | 8 | 79 | 3xD | Internal / External | Standard |
| D8.10-D10.0 | 47 | 10 | 89 | 3xD | Internal / External | Standard |
| D10.1-D12.0 | 55 | 12 | 102 | 3xD | Internal / External | Standard |
| D12.1-D14.0 | 60 | 14 | 107 | 3xD | Internal / External | Standard |
| D14.1-D16.0 | 65 | 16 | 115 | 3xD | Internal / External | Standard |
| D16.1-D18.0 | 73 | 18 | 123 | 3xD | Internal / External | Standard |
| D18.1-D20.0 | 79 | 20 | 131 | 3xD | Internal / External | Standard |
Key Features
Made from imported 0.8 μm submicron carbide with 10% cobalt for toughness and edge strength.
Helps maintain stable cutting performance in tough stainless steel machining conditions.
Self-developed coating with 2000–4000 HV hardness and low friction improves heat resistance.
Controlled passivation strengthens the cutting edge and reduces wear during stainless steel drilling.
30° helix and 138.9° point angle support stable penetration and accurate hole positioning.
Split-point design reduces drill walking and helps prevent work hardening during entry.
16° rake angle and variable core design improve chip control and cutting stability.
Negative chamfer and back taper enhance edge protection, chip evacuation, and hole quality.
This 3xD carbide drill for stainless steel is designed for short-depth hole machining in CNC machining centers and precision drilling operations. It is suitable for stainless steel components that require stable hole accuracy, good chip control, reduced work hardening, and reliable batch machining performance.
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
3xD means the drill is designed for hole depths up to 3 times the drill diameter.
Yes. This drill is designed for stainless steel drilling, helping reduce work hardening, improve chip evacuation, and maintain stable hole quality.
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.
Stainless steel has high toughness, poor thermal conductivity, and strong work-hardening tendency. A suitable carbide drill needs stable edge strength, heat-resistant coating, and reliable chip evacuation to maintain drilling performance.
Yes. Both internal coolant and external coolant versions are available according to machining requirements.
Yes. We support customization based on drawings, workpiece material, hole depth, and drilling application.
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