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Carbide Step Drill

High Speed Tungsten Carbide Drill Bits 90 Degree / 120 Degree 3 Flute

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High Speed Tungsten Carbide Drill Bits 90 Degree / 120 Degree 3 Flute

Brand Name:	AMG
MOQ:	3-10PCS
Packaging Details:	Plastic tube
Payment Terms:	T/T/Credit Card

Detail Information

Product Description

Detail Information

Place of Origin:

CHINA

Certification:

ISO9001

Product Name:

Tungsten Carbide Drill Bits

Material:

Tungsten Carbide

Application:

Aluminium, Cast Iron, Steel, Inconel 718, Titanium, Etc

Coating:

Uncoated (optional TiAlN For Steel)

Helix:

Customized

Type:

Inner Coolant End Mill

Supply Ability:

30000-100000pcs per month

Highlight:

120Degree Tungsten Carbide Drill Bits

3 Flute Drill Bit Tungsten

High Speed Tungsten Drill Bits

Product Description

High Speed Tungsten Carbide Drill Bits 90° / 120° 3 Flute

Product Name	Tungsten Carbide Drill Bits
Material	Tungsten carbide
Application	Aluminium, cast iron, steel, Inconel 718, titanium, etc.
Coating	Uncoated (optional TiAlN for steel)
Helix	Customized
Type	Inner coolant end mill

Tungsten Carbide 3 Flute Step Drill Bit with AlTiN Coating Through Coolant Holes

Our 3-Flute Carbide Step Drill Bit revolutionizes multi-diameter hole machining with its advanced tungsten carbide construction, precision AlTiN coating, and innovative through-coolant technology. Engineered for high-speed CNC applications, this step drill combines drilling, chamfering, and countersinking in a single operation, delivering unmatched efficiency when working with hardened steels, titanium alloys, and nickel-based superalloys.

Key Features

Premium Tungsten Carbide Substrate - Ultra-fine grain structure (0.5μm) ensures extreme hardness (93.5 HRA) and wear resistance for machining materials up to HRC 60.
3-Flute Optimized Geometry - Provides 50% faster chip evacuation than 4-flute designs while maintaining stability in deep-hole drilling.
AlTiN Nano-Coating Technology - Aluminum Titanium Nitride coating offers 3,800 HV hardness (3x harder than uncoated carbide), 900°C oxidation resistance for dry machining capability, and low friction coefficient reducing built-up edge (BUE).
Through-Coolant Holes (2-4 Channels) - Precision coolant delivery to cutting edges reduces cutting temperature by 40% vs. standard drills and extends tool life by 2-3x in titanium and Inconel.
Multi-Diameter Step Design - Single tool replaces 3-5 conventional drills with customizable step increments (0.5mm/1.0mm) and included angles: 90°, 120° (standard), or custom.
High-Speed Ready - Balanced for 8,000-12,000 RPM operations with G2.5 dynamic balance certification.

Performance Advantages

▶ Time Savings - Combines drilling + chamfering in one pass, reducing cycle times by 30%

▶ Cost Efficiency - 1 tool replaces multiple drill bits + countersinks

▶ Surface Finish - Achieves Ra 0.8 μm in stainless steel (vs. 1.6μm with HSS)

▶ Reliability - Manufactured to ISO 9001 standards with 100% preshipment inspection

Industry Applications

Aerospace - Drilling fastener holes in titanium bulkheads (Ti-6Al-4V) and composite/metal stacks with 0.02mm diameter consistency.

Oil & Gas - Valve body machining in Inconel 718 and 17-4PH stainless.

Medical - Precision holes in cobalt-chrome orthopedic implants.

Automotive - High-volume drilling of hardened transmission gears (up to HRC 58).

Product Images

Our Manufacturing Advantages

Advanced grinding machines - All of our grinding machines are WALTER and SAACKE brands.
Advanced inspection machines - We have ZOLLER, OMEGA, PG1000, etc. for inspecting each carbide tool.
Fast feedback - We offer 24 hours online service.
Strict quality control system - We strictly adhere to a three-stage inspection process for each tool: raw material inspection, semi-finished product inspection after production, and final inspection after coating (pre-shipment check).

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High Speed Tungsten Carbide Drill Bits 90 Degree / 120 Degree 3 Flute

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