Designed for precision micro-hole drilling in stainless steel materials, these 3xD micro carbide drills are manufactured from imported MG grade 0.8 μm tungsten carbide with 10% cobalt content, combined with ALTISIXN coating, controlled edge passivation, and high-precision grinding to improve edge strength, reduce work hardening, and maintain stable hole accuracy in small-diameter stainless steel machining.
The 3xD micro carbide drills for stainless steel are designed for small-diameter hole machining where edge stability, hole positioning, cutting consistency, and tool breakage resistance are critical. Compared with standard-size carbide drills, micro drills are more sensitive to spindle runout, cutting edge defects, chip control, and unstable machining conditions.
Stainless steel materials such as 304, 316L, 17-4PH, and duplex stainless steel have high toughness, poor thermal conductivity, and strong work-hardening tendency. In micro-hole drilling, even a small increase in cutting heat or edge wear may lead to burrs, hole deviation, poor surface quality, or premature drill breakage.
These micro carbide drills are produced from imported MG grade 0.8 μm tungsten carbide rods with 10% cobalt content, helping support high-speed cutting and stable micro-hole drilling. With ALTISIXN coating, manual drill point honing, automatic edge passivation, Walter Helicheck Plus inspection, and German Walter 5-axis grinding, the drills help improve cutting stability, reduce edge wear, and maintain reliable hole quality in precision stainless steel machining.
| Item | Description | Item | Description |
|---|---|---|---|
| Product Name | 3xD Micro Carbide Drills for Stainless Steel | Drill Type | Micro Solid Carbide Drill |
| Hole Depth | 3xD | Application | Precision micro-hole drilling in stainless steel |
| Workpiece Material | 304, 316L, 17-4PH, duplex stainless steel, stainless steel alloys | Carbide Material | Imported MG Grade 0.8 μm Tungsten Carbide |
| Coating | ALTISIXN Wear-Resistant Coating | Cobalt Content | 10% |
| Passivation Control | ±0.003 mm | Tool Life | Up to 80–100 Meters Under Suitable Machining Conditions |
| Service | Regrinding and Customization Available | Available Depth Series | 3xD, 5xD, 8xD, 12xD, up to 30xD |
Key Features
Made from imported MG grade 0.8 μm tungsten carbide with 10% cobalt content.
The fine carbide grain structure helps support edge strength, drilling stability, and high-speed micro-hole machining in stainless steel.
ALTISIXN coating helps improve wear resistance and edge protection during stainless steel micro-drilling.
It supports more stable cutting performance, reduces premature edge wear, and helps resist heat-related tool damage.
The drill point is manually honed and chamfer-passivated to improve cutting edge strength.
Automatic rubber-bonded diamond abrasive polishing keeps edge consistency and controls the passivation value within ±0.003 mm.
Produced on German Walter 5-axis high-precision grinding machines to ensure sharp and accurate cutting edges.
Walter Helicheck Plus inspection and 300x magnification checks help control geometry accuracy and prevent edge defects.
These 3xD micro carbide drills for stainless steel are suitable for precision small-hole machining in CNC machining centers, high-speed drilling equipment, and production environments where hole accuracy, edge consistency, and tool reliability are important.
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. For micro drills, this depth is suitable for stable small-hole machining with better rigidity and positioning control.
Yes. These 3xD micro carbide drills are designed for stainless steel materials, including 304, 316L, 17-4PH, duplex stainless steel, and other stainless steel alloys under suitable machining conditions.
This micro carbide drill uses ALTISIXN coating, which helps improve wear resistance, edge protection, and cutting stability in stainless steel micro-hole drilling.
Stainless steel has high toughness, poor thermal conductivity, and strong work-hardening tendency. In micro-hole drilling, cutting heat, edge wear, and chip control can quickly affect hole accuracy and tool life.
Micro drills have very small cutting edges and are sensitive to chipping or uneven edge conditions. Controlled passivation helps strengthen the cutting edge, improve consistency, and reduce premature tool failure.
We use German Walter Helicheck Plus for contour measurement, with profile and radius control within 3 μm. The products are also inspected at 300x magnification to check edge appearance and avoid chipping or saw-tooth defects.
Yes. We can support 1:1 replacement projects for selected Korean and Japanese drill series according to customer samples, drawings, or required specifications.
Yes. We support customization based on diameter, hole depth, shank size, coating, stainless steel grade, drawings, samples, and machining requirements.
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