Engineered for precision CNC milling, our HRC60 4 flute end mill delivers unmatched stability when cutting hardened steel up to 60 HRC. Featuring a rigid negative rake angle, this high-performance 4 flute flat end mill minimizes chipping under heavy loads. Rely on HRC60 4 flute end mills from Durable Mills for extended tool longevity and superior surface finish.
The HRC60 4 Flute End Mill engineered by Durable Mills represents an economical, universal solid carbide solution tailored for high-speed CNC milling of tough and hardened materials. Manufactured with ultra-fine 0.4 μm tungsten carbide substrate with a 12% cobalt matrix, this tool exhibits exceptional hardness (HRA92.5–93) and thermal stability, making it an ideal choice for volume moldmakers, automotive machine shops, and aerospace manufacturing facilities.
| Cobalt Content (Co) | Grain Size | Hardness (HRA) | Target Workpiece Hardness |
|---|---|---|---|
| 12% | 0.4 μm | HRA 92.5 – 93 | Up to HRC 60 |
| 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) | ap ≤ 1.5D | ae ≤ 0.1D | 120 m/min | 0.006D mm/z |
| P | Alloy Steel (35–48 HRC) | ap ≤ 1.5D | ae ≤ 0.1D | 80 m/min | 0.0035D mm/z |
| M | Stainless Steel | ap ≤ 1.5D | ae ≤ 0.1D | 100 m/min | 0.006D mm/z |
| K | Gray Cast Iron / Ductile Cast Iron (<32 HRC) | ap ≤ 1.5D | ae ≤ 0.1D | 120 m/min | 0.0055D mm/z |
| H | Alloy Steel / Hardened Steel (45–60 HRC) | ap ≤ 1.0D | ae ≤ 0.05D | 60–80 m/min | 0.0025D mm/z |
Note: The cutting parameters listed are recommendations. Adjust speeds and feeds according to workpiece hardness, machine tool rigidity, and coolant setup.
| Model / Item No. | Cutting Diameter (D, mm) | Flute Length (Lc, mm) | Shank Diameter (d, mm) | Overall Length (L, mm) | Flutes (T) |
|---|---|---|---|---|---|
| DM-3*8*3*50*4T | 3 | 8 | 3 | 50 | 4 |
| DM-3*12*3*75*4T | 3 | 12 | 3 | 75 | 4 |
| DM-3*15*3*100*4T | 3 | 15 | 3 | 100 | 4 |
| DM-1*3*4*50*4T | 1 | 3 | 4 | 50 | 4 |
| DM-1.5*4*4*50*4T | 1.5 | 4 | 4 | 50 | 4 |
| DM-2*5*4*50*4T | 2 | 5 | 4 | 50 | 4 |
| DM-2.5*7*4*50*4T | 2.5 | 7 | 4 | 50 | 4 |
| DM-3*8*4*50*4T | 3 | 8 | 4 | 50 | 4 |
| DM-3.5*10*4*50*4T | 3.5 | 10 | 4 | 50 | 4 |
| DM-4*10*4*50*4T | 4 | 10 | 4 | 50 | 4 |
| DM-4*16*4*75*4T | 4 | 16 | 4 | 75 | 4 |
| DM-4*20*4*100*4T | 4 | 20 | 4 | 100 | 4 |
| DM-5*13*5*50*4T | 5 | 13 | 5 | 50 | 4 |
| DM-5*20*5*75*4T | 5 | 20 | 5 | 75 | 4 |
| DM-5*25*5*100*4T | 5 | 25 | 5 | 100 | 4 |
| DM-1*3*6*50*4T | 1 | 3 | 6 | 50 | 4 |
| DM-1.5*4*6*50*4T | 1.5 | 4 | 6 | 50 | 4 |
| DM-2*5*6*50*4T | 2 | 5 | 6 | 50 | 4 |
| DM-2.5*7*6*50*4T | 2.5 | 7 | 6 | 50 | 4 |
| DM-3*8*6*50*4T | 3 | 8 | 6 | 50 | 4 |
| DM-3.5*10*6*50*4T | 3.5 | 10 | 6 | 50 | 4 |
| DM-4*10*6*50*4T | 4 | 10 | 6 | 50 | 4 |
| DM-4.5*12*6*50*4T | 4.5 | 12 | 6 | 50 | 4 |
| DM-5*13*6*50*4T | 5 | 13 | 6 | 50 | 4 |
| DM-6*15*6*50*4T | 6 | 15 | 6 | 50 | 4 |
| DM-6*25*6*75*4T | 6 | 25 | 6 | 75 | 4 |
| DM-6*30*6*100*4T | 6 | 30 | 6 | 100 | 4 |
| DM-6*40*6*150*4T | 6 | 40 | 6 | 150 | 4 |
| DM-7*18*8*60*4T | 7 | 18 | 8 | 60 | 4 |
| DM-8*20*8*60*4T | 8 | 20 | 8 | 60 | 4 |
| DM-8*28*8*75*4T | 8 | 28 | 8 | 75 | 4 |
| DM-8*35*8*100*4T | 8 | 35 | 8 | 100 | 4 |
| DM-8*50*8*150*4T | 8 | 50 | 8 | 150 | 4 |
| DM-9*23*10*75*4T | 9 | 23 | 10 | 75 | 4 |
| DM-10*25*10*75*4T | 10 | 25 | 10 | 75 | 4 |
| DM-10*40*10*100*4T | 10 | 40 | 10 | 100 | 4 |
Our tools feature a specially designed negative front rake angle and reinforced edge honing. This negative angle diverts heavy cutting force inwards toward the core rather than concentrating stress on the cutting corner, significantly lowering the risk of tool chipping when machining hard steels.
Yes. We specialize in B2B manufacturing and support OEM/ODM requirements, including custom flute lengths, non-standard shanks, specific physical vapor deposition (PVD) coatings, and laser-marked brand logos. Please contact our team via our Contact Page or write directly to info@durablemills.com.
Standard catalog models are stocked for prompt dispatch within 3–7 business days. Bulk batch orders and customized tools typically ship in 15–25 business days depending on specific coating and order quantities.
While primarily optimized for side peripheral milling and semi-finishing, this tool can perform light slotting in materials under 45 HRC with adjusted feeds and adequate air/coolant blast to ensure reliable chip evacuation.
Partner with Durable Mills for competitive wholesale pricing, consistent batch quality, and direct manufacturer support.
