Our HSS-HSS-E Extrusion Taps with TiCN (Titanium Carbonitride) Coating are professional thread-forming tools engineered for high-efficiency, chip-free internal threading. Combining the superior performance of HSS (High-Speed Steel) and HSS-E (Cobalt High-Speed Steel) with the advanced protection of TiCN coating, these taps deliver exceptional wear resistance, reduced friction, and extended tool life—making them ideal for high-volume, precision machining across automotive, electronics, hydraulic, and general machinery industries. Whether you’re machining soft non-ferrous metals or high-strength alloys, our taps ensure consistent thread quality and stable performance.
Product Core Advantages
1. Premium HSS-HSS-E Base Material
Available in two high-performance base materials to meet diverse machining needs:
HSS-E Version: Upgraded with 5%-8% cobalt alloy, enhancing hot hardness (retaining hardness up to 650-700°C) and wear resistance. 3-5 times longer tool life than standard HSS, perfect for high-speed continuous machining and medium-high hardness materials (up to HRC 45). 2. TiCN Coating: Advanced Protection & Performance Boost
The TiCN (Titanium Carbonitride) coating is a high-performance surface treatment that takes the taps’ performance to the next level, featuring a distinctive gray-violet appearance and superior technical characteristics:
Super Wear Resistance: Coating hardness up to 3000HV, significantly reducing wear during machining and extending tool life compared to uncoated or TiN-coated taps.
Low Friction Coefficient: Friction coefficient as low as 0.3, minimizing friction between the tap and workpiece, reducing tapping torque, and preventing chip adhesion (galling) and tool jamming.
Good Toughness & Impact Resistance: More resistant to chipping and deformation than other hard coatings, adapting to heavy machining forces and intermittent cutting scenarios.
Broad Compatibility: Effectively protects the tap from corrosion and thermal wear, making it suitable for machining a wide range of materials without compromising performance.
3. Chip-Free Thread Forming
Adopting cold extrusion technology, the taps form threads by displacing workpiece material rather than cutting, eliminating chip production. This design avoids chip clogging in blind holes or through holes, prevents tool breakage, and ensures smoother, stronger internal threads (20-30% higher thread strength via work-hardening effect) with a surface finish of Ra ≤ 3.2μm.
4. High Precision & Consistency
Processed by precision CNC grinding, the taps feature accurate thread profiles, tight dimensional tolerance (ISO 2X 6HX), and consistent batch quality. The TiCN coating further enhances dimensional stability, ensuring uniform thread precision even in high-volume production.
5. Wide Application Range
Suitable for machining internal threads of various materials, including:
Low-carbon steel, carbon steel, and alloy steel (up to HRC 45)
Stainless steel (304/316) and high-strength difficult-to-machine steels (up to 850 N/mm²)
Aluminum alloys, copper, brass, and other non-ferrous metals
Ideal for automotive engine parts, hydraulic fittings, 3C product casings, precision machinery components, and more.
