8.44mm 4 Flute Step Reamer with AlTiSiN Coating Precision Carbide Step Drill for Hardened Steel Stainless Alloys CNC Machining Tool

Product introduction:

The 8.44mm 4-Flute Step Reamer with AlTiSiN Coating is a high-performance precision cutting tool designed for machining hardened steels, stainless steel, and super alloys. This carbide step reamer features an advanced AlTiSiN coating that provides exceptional heat resistance and extended tool life in demanding CNC machining applications.

Features:

• Precision 8.44mm diameter with 4-flute design for optimal chip evacuation

• Premium micro-grain carbide substrate for superior strength and wear resistance

• Advanced AlTiSiN (Aluminum Titanium Silicon Nitride) coating for extreme heat resistance

• Step design allows for multiple diameter machining in a single operation

• Engineered for high-speed CNC machining operations

• Rigorous quality control ensures consistent performance

Advantages:

✓ 3-5x longer tool life compared to standard coated reamers

✓ Maintains sharp cutting edges even at elevated temperatures

✓ Reduced friction and built-up edge formation

✓ Excellent surface finish quality (Ra 0.8μm achievable)

✓ Stable cutting performance in interrupted cuts

✓ Suitable for both through holes and blind holes

Applications:

• • Precision hole finishing in hardened steels (HRC 45-65)

• • Aerospace components machining (Inconel, Waspaloy, etc.)

• • Medical device manufacturing (surgical instruments, implants)

• • Automotive transmission and engine components

• • Die and mold industry applications

• • General CNC machining of stainless steel (303, 304, 316)

Detailed Pictures:

Our wokshp:

Promotion policy:

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!

Other products:

FAQ:

1. Are you a manufacturer or trading company?

We are a professional manufacturer of carbide tools which established in 2017.

2. Which CNC grinding machine do you use?

All of our carbide tools are produced by imported WALTER grinding machines.

3. Which shipping method do you usually use?

We usually send goods by express like FedEx, UPS, DHL, TNT, EMS, ETC.

We also can send products to your shipping agent in China.