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Solid carbide HRC58 ball nose end mill 2 flute milling cutter for hardened steel machining
Reinforced negative rake ball nose end mill cutting edge profile for chipping prevention
Micro-grain carbide 2 flute ball nose end mill polished flute and chamfered shank detail

HRC58 2 Flute Ball Nose End Mill for Hardened Steel

Looking for an industrial-grade HRC58 ball nose end mill? Durable Mills supplies premium 2 flute ball nose end mills engineered for contouring hardened steel, alloy steel, and cast iron. Featuring a negative rake geometry, this HRC58 ball end mill ensures superior wear resistance and anti-chipping strength during high-speed CNC milling.

Ball Nose
Cast Iron
Steel
35°
2 Flutes
TiAISiN
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Product Overview: High-Performance HRC58 Ball Nose End Mill

Manufactured by Durable Mills, our HRC58 ball nose end mill series is precision-engineered for profiling, 3D contouring, and copy milling across medium-to-hard workpiece materials up to HRC58. Utilizing premium micro-grain carbide substrates and an advanced heat-resistant composite coating, this 2 flute ball nose cutter achieves exceptional tool longevity, process stability, and surface finish in mold making and die manufacturing industries.

Material Composition & Engineering Specifications

  • Substrate Grade: Ultrafine Micro-Grain Solid Tungsten Carbide
  • Cobalt Content (Co): 10%
  • Carbide Grain Size: 0.8 μm
  • Substrate Hardness: HRA 91.5 – 92.0
  • Working Hardness Range: Up to HRC 58
  • Number of Flutes: 2 Flutes (2T)
  • Center Cutting: Yes (Allows plunge and ramp milling)

Key Advantages & Structural Features

1. Reinforced Negative Rake Cutting Edge

The specialized negative front angle geometry reinforces the cutting wedge, substantially lowering the risk of edge micro-chipping under high feed rates or intermittent cutting.

2. Premium Thermal & Wear Resistance

The high-hardness substrate combined with specialized anti-friction coating provides superior oxidation resistance at elevated cutting temperatures, extending continuous production run times.

3. Optimized Chip Flute Geometry

Precision-ground 2-flute architecture maximizes chip evacuation space, minimizing workpiece thermal transfer and secondary chip welding during 3D surface profiling.

Recommended Cutting Parameters & Workpiece Suitability

ISO Material Group Workpiece Material Axial Depth (ap) Radial Width (ae) Cutting Speed (Vc) Feed per Tooth (fz)
P Carbon Steel, Alloy Steel (<35 HRC / 35-48 HRC) ≤ 0.20 D ≤ 0.30 D 170 m/min 0.008 D mm/z
M Stainless Steels (Austenitic / Martensitic) ≤ 0.15 D ≤ 0.20 D 120 m/min 0.006 D mm/z
K Gray Cast Iron, Ductile Cast Iron (<32 HRC) ≤ 0.20 D ≤ 0.20 D 150 m/min 0.0065 D mm/z
H Alloy Steel, Pre-hardened Steel (45-58 HRC) ≤ 0.10 D ≤ 0.15 D 110-140 m/min 0.005 D mm/z

Standard Product Dimension & Specifications

HRC58 ball nose end mill technical dimension chart showing radius flute length and shank diameter

Order Model Radius R (mm) Flute Length Lc (mm) Shank Dia. d (mm) Overall Length L (mm) Flutes (Z)
DM-R1.5*6*3*50*2T 1.5 6 3 50 2
DM-R1.5*6*3*75*2T 1.5 6 75 2
DM-R1.5*6*3*100*2T 1.5 6 3 100 2
DM-R0.5*2*4*50*2T 0.5 2 4 50 2
DM-R0.75*3*4*50*2T 0.75 3 4 50 2
DM-R1*4*4*50*2T 1.0 4 4 50 2
DM-R1.25*5*4*50*2T 1.25 5 4 50 2
DM-R1.5*6*4*50*2T 1.5 6 4 50 2
DM-R1.75*7*4*50*2T 1.75 7 4 50 2
DM-R2*8*4*50*2T 2.0 8 4 50 2
DM-R2*8*4*75*2T 2.0 8 4 75 2
DM-R2*8*4*100*2T 2.0 8 4 100 2
DM-R0.5*2*4*75*2T 0.5 2 4 75 2
DM-R0.75*3*4*75*2T 0.75 3 4 75 2
DM-R1*4*4*75*2T 1.0 4 4 75 2
DM-R1.25*5*4*75*2T 1.25 5 4 75 2
DM-R1.5*6*4*75*2T 1.5 6 4 75 2
DM-R2.5*10*5*50*2T 2.5 10 5 50 2
DM-R2.5*10*5*75*2T 2.5 10 5 75 2
DM-R2.5*10*5*100*2T 2.5 10 5 100 2
DM-R2.5*10*6*50*2T 2.5 10 6 50 2
DM-R0.5*2*6*50*2T 0.5 2 6 50 2
DM-R0.75*3*6*50*2T 0.75 3 6 50 2
DM-R1*4*6*50*2T 1.0 4 6 50 2
DM-R1.25*5*6*50*2T 1.25 5 6 50 2
DM-R1.5*6*6*50*2T 1.5 6 6 50 2
DM-R1.75*7*6*50*2T 1.75 7 6 50 2
DM-R2*8*6*50*2T 2.0 8 6 50 2
DM-R2.5*10*6*50*2T 2.5 10 6 50 2
DM-R3*12*6*50*2T 3.0 12 6 50 2
DM-R3*12*6*75*2T 3.0 12 6 75 2
DM-R3*12*6*100*2T 3.0 12 6 100 2
DM-R3*12*6*150*2T 3.0 12 6 150 2
DM-R3.5*14*8*60*2T 3.5 14 8 60 2
DM-R4*16*8*60*2T 4.0 16 8 60 2
DM-R4*16*8*75*2T 4.0 16 8 75 2

Frequently Asked Questions (FAQ)

Q1: What workpiece materials can this HRC58 ball nose end mill process?

This tool is specially optimized for carbon steel, alloy tool steel, cast iron, and pre-hardened die steel up to 58 HRC. It can also machine stainless steel under appropriate feeds and coolant conditions.

Q2: Why choose a 2-flute design over a 4-flute ball nose end mill?

A 2-flute ball nose cutter provides larger chip pockets, preventing tool loading and chip clogging during semi-finishing, deep cavity milling, and high-speed curved surface generation.

Q3: Do you offer custom shank lengths and OEM tool labeling for distributors?

Yes. Durable Mills supports wholesale partners with custom total lengths (up to 150 mm), customized reach, OEM laser marking, and protective plastic packaging tailored to your brand.

Q4: How can I request wholesale pricing or bulk sample evaluation?

You can submit a bulk RFQ directly through our Contact Us page or email us at info@durablemills.com with your required dimensions and quantities.

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