The high-performance 4 flute flat end mill is engineered for precision machining on carbon steel, alloy steel, and stainless steel up to HRC58. Featuring a negative rake angle and 0.8μm micro-grain carbide, this 4-flute flat end milling cutter delivers outstanding chip evacuation and tool life for CNC milling.
Engineered for modern CNC machining centers, the HRC58 4 flute flat end mill from Durable Mills delivers exceptional performance in semi-finishing and finishing operations. Manufactured from ultra-fine submicron tungsten carbide with 10% cobalt content, this solid carbide end mill provides high rigidity, thermal stability, and superior edge strength on hard-to-machine workpieces.
| Workpiece Material | Axial Depth (ap) | Radial Width (ae) | Cutting Speed (vc) | Feed Per Tooth (fz) |
|---|---|---|---|---|
| Carbon Steel / Alloy Steel (<35 HRC) | ≤ 1.5D | ≤ 0.15D | 170 m/min | 0.008D |
| Alloy Steel (35 – 48 HRC) | ≤ 1.5D | ≤ 0.15D | 140 m/min | 0.007D |
| Stainless Steel | ≤ 1.5D | ≤ 0.10D | 100 m/min | 0.006D |
| Gray Cast Iron / Ductile Cast Iron (<32 HRC) | ≤ 1.5D | ≤ 0.15D | 150 m/min | 0.0065D |
| Aluminum Alloy / Copper Alloy | Applicable (Adjust parameters according to workpiece rigidity) | |||
| Hardened Steel (45 – 65 HRC) | Applicable for semi-finishing under rigid machine setups | |||
| Model Type | Cutting Diameter (D, mm) | Flute Length (Lc, mm) | Shank Diameter (d, mm) | Overall Length (L, mm) | Flutes |
|---|---|---|---|---|---|
| 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-1*3*4*75*4T | 1 | 3 | 4 | 75 | 4 |
| DM-1.5*4*4*75*4T | 1.5 | 4 | 4 | 75 | 4 |
| DM-2*5*4*75*4T | 2 | 5 | 4 | 75 | 4 |
| DM-2.5*7*4*75*4T | 2.5 | 7 | 4 | 75 | 4 |
| DM-3*8*4*75*4T | 3 | 8 | 4 | 75 | 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 |
Q1: What materials are best suited for this 4 flute flat end mill?
A: This end mill is optimized for carbon steel, pre-hardened alloy steel, stainless steel, and ductile cast iron up to HRC 58. It can also perform profiling and slotting on non-ferrous alloys with proper toolpaths.
Q2: Why does this cutter feature a negative rake angle?
A: The negative front rake profile increases the wedge angle behind the cutting edge, reinforcing mechanical rigidity to resist micro-chipping during high-feed milling and interrupted cutting.
Q3: Do you support custom shank lengths or OEM private labeling?
A: Yes. We offer OEM manufacturing, laser branding, and custom tool geometries. Please contact our team via our contact page or reach out at info@durablemills.com for volume quotes and technical drawings.
Q4: What is the typical lead time for wholesale B2B shipments?
A: Standard sizes listed above are maintained in warehouse inventory for prompt dispatch within 3-5 business days. Custom configurations typically require 15-20 business days.
