4 Flute Solid Carbide 5mm square cutting end mill Flat Bottom CNC Cutting Tool for Steel Hard Metals

Introduction:

Our 5mm 4-flute solid carbide square end mill is engineered for high-performance machining of steels and hard metals (up to HRC 60). Featuring a precision-ground flat bottom and ultra-fine grain tungsten carbide construction, this industrial-grade cutting tool delivers exceptional rigidity, wear resistance, and surface finish quality in demanding CNC milling applications.

The optimized 4-flute geometry provides the ideal balance between material removal rate and tool life, making it perfect for mold/die manufacturing, aerospace components, and general precision machining where dimensional accuracy is critical.

Features:

1. Advanced Tool Geometry

• True square end (<0.05mm corner radius) for sharp 90° shoulders

• 4-flute design maximizes feed rates while maintaining stability

• 35° helix angle reduces cutting forces and harmonics

• Full-length cutting edges enable side-wall finishing

2. Premium Material Technology

• Sub-micron carbide substrate (0.6μm grain size)

• AlTiN/TiSiN coating options (up to 3,800HV hardness)

• Polished flutes prevent chip adhesion in gummy materials

3. Documented Performance Advantages

✓ 4× longer life vs standard HSS end mills in 4140 steel
✓ 0.10mm/tooth feed rates achievable in alloy steels
✓ Ra 0.8μm surface finish in finishing passes
✓ IT7 tolerance maintained over full tool life

4. Customization Options

• Diameter tolerance: ±0.005mm (h6) available

• Length variants: 3×D, 5×D, 8×D cutting lengths

• Shank types: Straight, Weldon, HSK, BT

• Special geometries: Corner radius, variable helix

Applications:

① Mold & Die Industry

• Precision cavities in P20, H13 mold steels

• EDM electrode machining

② Automotive Components

• Transmission gear machining

• Engine block detailing

③ General Metalworking

• Carbon steel fixture manufacturing

• Alloy steel prototype machining

④ Tool & Die Maintenance

• Die repair and refurbishment

• Precision slot cutting

Detailed Pictures:

Our workshop:

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.