This tungsten carbide step drill is a high-precision cutting tool designed for multi-diameter hole processing in aluminum and other non-ferrous metals. Featuring an integrated multi-step geometry, it completes multiple diameter holes in a single drilling operation, eliminating the need for tool changes and significantly boosting machining productivity.
Made from premium tungsten carbide (WC-Co) material, this step drill delivers exceptional hardness, wear resistance, and thermal stability — ensuring consistent cutting performance and extended tool life even in continuous production environments.
This product is manufactured to customer specifications (a customized non-standard order). It is currently supplied without coating, making it particularly suitable for aluminum and non-ferrous metal applications where built-up edge is a primary concern. However, a full range of advanced coating options is available upon request to meet diverse application requirements.
Multi-Diameter Drilling in One Pass – The stepped geometry allows drilling of graduated holes in a single feed, reducing machining time and eliminating multiple tool changes.
Superior Wear Resistance – Tungsten carbide hardness (HV 1800–2200) provides 5–20x the wear resistance of HSS tools, ideal for high-volume production.
Precision Engineered – Manufactured on advanced CNC grinders with tight tolerances, delivering consistent hole diameters and step sizes across multiple workpieces.
Uncoated for Aluminum – Current configuration minimizes built-up edge (BUE) when machining aluminum alloys; optional coatings available for other materials.
Fully Customizable – Tailored to your exact specifications: any diameter, length, step configuration, and coating type.
| Parameter | Value |
|---|---|
| Product Type | Tungsten Carbide Step Drill (Tungsten Carbide Step Drill / 硬质合金阶梯钻) |
| Step Diameter (1st Step) | 11.5 mm |
| Cutting Diameter (Max) | 16.3 mm |
| Flute Length | 68 mm |
| Shank Diameter | 16 mm |
| Shank Length | 48 mm |
| Overall Length | 120 mm |
| Material | Solid Tungsten Carbide (WC-Co) |
| Coating | Uncoated (custom coatings available on request) |
| Primary Application | Aluminum & Non-Ferrous Metals |
| Order Type | Customized / Non-Standard |
This product was originally produced as a customized order for a specific customer. However, we specialize in manufacturing carbide step drills to YOUR exact requirements.
Dimensions – Any step diameter, cutting diameter, flute length, shank diameter, and overall length based on your drawings or samples.
Step Count – From single-step to multi-step configurations, tailored to your hole diameter combination.
Coating – Uncoated, TiAlN, AlTiN, TiSiN, Diamond, DLC, or custom coatings.
Flute Design – Straight flute, spiral flute (standard 30° helix or custom), or multi-flute geometries.
Through-Coolant – Optional internal coolant holes available for enhanced chip evacuation and heat management.
Aluminum alloy drilling and machining
Non-ferrous metal processing (copper, brass, etc.)
Aerospace component manufacturing
Automotive parts fabrication
General metalworking and industrial production
Mold and die manufacturing
Electronic equipment housing drilling
Ready to optimize your drilling operations with custom carbide step drills?
Send us your drawings or samples today. Our technical team will review your requirements and provide a competitive quote within 24 hours.
sales@ejtungsten.com or +8618673339477(same for whats app and we chat)
