Carbide Step Drill Bit with AlTiSiN Coating Straight Flute Internal
Coolant for Steel Hard Metals
Introduction:
Premium Carbide Step Drill Bit with AlTiSiN Coating is designed for high-performance machining of hardened steels and
exotic alloys, this carbide step drill bit combines AlTiSiN coating, straight flute design, and internal coolant channels to deliver exceptional tool life and precision in demanding
industrial applications.
Features:
✔ Advanced AlTiSiN Coating – Superior heat resistance (up to 900°C) and oxidation protection
for extended tool life in high-temperature operations.
✔ Straight Flute Design – Optimized chip evacuation reduces clogging and improves surface
finish in viscous materials.
✔ Internal Coolant Holes – Direct coolant to the cutting edge for heat dissipation, enabling
higher feed rates and deeper hole drilling.
✔ Solid Carbide Construction – Ultra-hard substrate maintains sharpness in abrasive materials
like tool steel, stainless, and titanium.
✔ Multi-Step Geometry – Eliminates tool changes for tapered/stepped hole applications
(e.g., chamfering, deburring).
Advantages:
3× Longer Lifespan – AlTiSiN coating reduces flank wear vs. uncoated/TiN drills.
Higher Feed Rates – Internal coolant allows aggressive machining without workpiece
hardening.
Versatile Material Compatibility – Engineered for stainless steel (304/316), titanium (Grade 5),
Inconel, and hardened steels (HRC 45+).
Applications:
CNC Machining Centers – Ideal for deep-hole drilling in molds/dies.
Aerospace Components – Drilling turbine blades and high-strength alloys.
Automotive Manufacturing – Precision holes in gearboxes and drivetrain parts.
Oil & Gas Tools – Machining valve bodies and drilling equipment.
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)
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