4 Flute Carbide U-Slot End Mill for Steel Stainless Inconel High Efficiency Roughing Finishing

Introduction:

Our 4-flute U-slot carbide end mill is engineered for high-performance machining of tough materials like steel (HRC 50+), stainless steel, and Inconel. Featuring an optimized U-groove geometry and ultra-fine grain carbide, this tool delivers exceptional material removal rates in roughing while maintaining precision finishes—ideal for dynamic milling, mold/die, and aerospace applications.

Features:

✔ 4-Flute U-Slot Design – Balances chip evacuation and surface finish.
✔ Solid Carbide Construction – 3X longer life vs. HSS tools in Inconel.
✔ High Helix (35°) – Reduces cutting forces in stainless/gummy alloys.
✔ TiAlN/AlCrN Coating – Withstands 1,000°C (optional).
✔ Precision Ground – ±0.01mm tolerance, <0.005mm runout.
✔ Size Range – 3mm-20mm (1/8" to 3/4"), custom lengths available.

Advantages:

✅ 50% Faster Machining – High feed dynamic milling compatible.
✅ Burr-Free Finishes – Ra 0.4μm achievable in finishing passes.
✅ Reduced Vibration – Balanced design for deep slot stability.
✅ Multi-Material Ready – Steel (4140, H13), Stainless (316), Inconel 718.
✅ Through-Coolant Option – For high-heat alloys.

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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