Designed for stable extra-deep-hole drilling in stainless steel materials, this 15xD carbide drill combines imported MG grade 0.8 μm carbide, ALTISIXN wear-resistant coating, optimized point geometry, reinforced extra-deep-hole flute structure, and internal coolant support to improve chip evacuation, reduce work hardening, control cutting heat, and maintain reliable hole straightness in long-depth stainless steel machining.
The 15xD carbide drill for stainless steel is designed for extra-deep-hole machining applications where chip evacuation, heat control, hole straightness, and process stability are critical. Compared with 12xD drilling, 15xD stainless steel drilling has a longer chip evacuation distance and higher requirements for internal coolant pressure, flute rigidity, spindle runout control, and machine stability.
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 15xD extra-deep-hole drilling, chips must travel a longer path before leaving the hole, while cutting heat is more difficult to remove from the cutting zone. If chip evacuation, coolant delivery, and cutting load are not controlled, the drill may face chip clogging, edge overload, hole deviation, burr formation, or premature tool failure.
This 15xD carbide drill is manufactured from imported MG grade 0.8 μm tungsten carbide rods with 10% cobalt content, supporting high-speed cutting and stable tool strength. Combined with ALTISIXN wear-resistant coating, optimized point geometry, reinforced extra-deep-hole flute structure, controlled edge preparation, and German Walter precision grinding, it helps improve drilling stability, reduce work hardening, protect the cutting edge, and maintain consistent hole quality in stainless steel deep-hole applications.
| Item | Description | Item | Description |
|---|---|---|---|
| Product Name | 15xD Carbide Drill for Stainless Steel | Drill Type | Solid Carbide Extra-Deep-Hole Drill |
| Hole Depth | 15xD | Application | Extra-deep-hole drilling in stainless steel materials |
| 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% | Coating | ALTISIXN Wear-Resistant Coating |
| Passivation Control | ±0.003 mm | Edge Inspection |
|
| Service | Regrinding and Customization Available | Tool Life | Up to 80–150 Meters Under Suitable Machining Conditions |
Key Features
Made from imported MG grade 0.8 μm tungsten carbide with 10% cobalt content.
The fine carbide grain structure helps support tool rigidity, edge strength, and stable cutting performance in extra-deep stainless steel hole machining.
ALTISIXN coating helps improve wear resistance, heat resistance, and cutting edge protection during stainless steel drilling.
It supports more stable cutting performance, reduces premature edge wear, and helps resist heat-related tool damage in 15xD extra-deep-hole applications.
Optimized drill point geometry supports stable entry and accurate hole positioning.
A stable drill point helps reduce drill walking, improve starting accuracy, and minimize work hardening at the hole entrance before long-depth drilling.
Reinforced flute geometry improves chip evacuation and tool rigidity in 15xD drilling.
The variable core design and back taper help reduce chip clogging, lower friction inside the hole, protect the cutting edge, and maintain more stable hole quality over longer drilling depths.
This 15xD carbide drill for stainless steel is suitable for extra-deep-hole machining in CNC machining centers and production drilling applications. It is especially useful for stainless steel components where long chip evacuation, internal coolant delivery, heat control, work-hardening resistance, hole straightness, and batch drilling stability 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
15xD means the drill is designed for hole depths up to 15 times the drill diameter. It is used for extra-deep-hole machining where chip evacuation, coolant delivery, tool rigidity, heat control, and hole straightness are more demanding.
Yes. This 15xD carbide drill is suitable for 304, 316L, 17-4PH, duplex stainless steel, and other stainless steel alloys under suitable machining conditions.
This drill uses ALTISIXN wear-resistant coating, which helps improve edge protection, heat resistance, and tool life in stainless steel extra-deep-hole drilling applications.
A 12xD drill is used for deep-hole drilling, while a 15xD drill is designed for longer and more demanding holes. 15xD drilling requires stronger coolant support, better flute rigidity, more careful runout control, and more stable machine conditions.
Yes. Internal coolant is strongly recommended for 15xD stainless steel drilling because it helps remove chips, control cutting heat, reduce chip clogging, and maintain stable hole quality in extra-deep holes.
For better starting stability and hole accuracy, a pilot hole or guide hole is recommended in many 15xD drilling applications. The actual process should be confirmed according to drill diameter, machine condition, stainless steel grade, and tolerance requirement.
Machine rigidity, spindle runout, tool holding accuracy, coolant pressure, pilot hole quality, and chip evacuation conditions should be checked before drilling. These factors strongly affect hole straightness and tool life in 15xD stainless steel applications.
Yes. We support customization based on drawings, stainless steel grade, diameter, hole depth, coolant method, ALTISIXN coating requirement, shank size, and drilling application.
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