Solid Carbide Multi-Step Drill Bit for Aluminum Copper Soft Steel Uncoated Coated Options

Introduction:

Engineered for high-performance machining of non-ferrous metals and soft steels, this multi-step drill bit combines ultra-fine carbide substrate with customizable coating options to deliver exceptional tool life and versatility. Ideal for CNC machining centers, it performs drilling, chamfering, and countersinking in a single operation, significantly reducing production time.

Features:

✔ Advanced Material Options

• Uncoated Carbide: Optimized for aluminum, copper, and brass (prevents material adhesion)

• AlTiN/TiN Coated: For extended life in abrasive soft steels (HRC<35)

✔ Multi-Step Geometry

• Integrated diameter transitions (customizable step increments: 0.5mm/1mm/2mm)

• Precision ground edges (±0.02mm tolerance) for burr-free finishes

✔ Optimized Cutting Design

• 3-4 flute spiral design (30°-45° helix) for efficient chip evacuation

• 140° point angle reduces thrust force in soft materials

✔ Coolant Compatibility

• Through-tool coolant holes (2-4 channels, Ø1.0-1.5mm)

• Supports MQL and flood cooling for heat-sensitive alloys

✔ Rigid Carbide Construction

• Sub-micron grain structure (K10/K20 grade)

• Weldon flat shank option for heavy-duty machining

Advantages:

40% Faster Machining vs. standard twist drills (combined operations)

2-3× Longer Tool Life with AlTiN coating in abrasive materials

Mirror Finishes (Ra ≤0.8µm) achievable in aluminum/copper

Applications:

Electronics Manufacturing

• Heat sink holes + chamfers (Aluminum 6061)

• Brass connector plates

Automotive

• Lightweight alloy housings (Mg/Al)

• Soft steel brackets (HRC<30)

General Machining

• Multi-diameter holes in copper pipes

• Step drilling in plastic composites

Detailed Pictures:

Our workshop:

New Customer Special Offers:

To help you experience our premium products, we’re excited to offer the following exclusive promotions for first-time buyers:

1.Free Test Samples

Get free samples (total value ≤ $20 USD) when you cover the international shipping cost.

Perfect for evaluating our product quality and performance risk-free.

2.$50 USD Discount on First Order

New customers can enjoy a $50 discount on the first order of $500 or more.

A great way to start our partnership with extra value!

Our advantages:

1.Advanced grinding machines: All of our grinding machines are WALTER and SAACKE brands.

2.Advanced inspection machines: We have ZOLLER, OMEGA, PG1000, etc. For inspecting each carbide tools.

3.Fast feedback: we offer 24 hours online service

4.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
Final inspection after coating (pre-shipment check)

Related products:

  CHANGZHOU AMG PRECISION TOOL MANUFACTURING CO., LTD. is a leading manufacturer and solution provider specializing in high-performance carbide cutting tools for precision CNC machining applications. With a strong commitment to innovation and quality, we design and produce an extensive range of standard and custom cutting tools, including carbide drill bits, end mills, reamers, and complex non-standard forming tools tailored to meet the most demanding machining challenges.