CNC Milling Cutter Parameter Recommendations

1. Carbon Steel (ISO P)

Application: face milling / shoulder milling

• Cutting speed (Vc): 160–240 m/min

• Feed per tooth (fz): 0.05–0.12 mm/tooth

• Axial depth of cut (ap): 0.5–2.0 × D

• Radial depth of cut (ae): 20–60% of D

Technical notes:
Use TiAlN or AlTiN coated cutters. Maintain stable engagement to reduce vibration and flank wear.

2. Stainless Steel (ISO M)

Application: slotting / profiling

• Cutting speed (Vc): 100–180 m/min

• Feed per tooth (fz): 0.04–0.10 mm/tooth

• Axial depth of cut (ap): 0.5–1.5 × D

• Radial depth of cut (ae): 10–40% of D

Technical notes:
Sharp cutting edges and high-helix designs are recommended to reduce cutting forces and work hardening.

3. Cast Iron (ISO K)

Application: rough milling

• Cutting speed (Vc): 180–300 m/min

• Feed per tooth (fz): 0.06–0.15 mm/tooth

• Axial depth of cut (ap): 1.0–2.5 × D

• Radial depth of cut (ae): 30–70% of D

Technical notes:
Wear-resistant grades and dry cutting are commonly used. Chip control is less critical compared to steel.

4. Aluminum Alloys (ISO N)

Application: high-speed milling

• Cutting speed (Vc): 400–1,200 m/min

• Feed per tooth (fz): 0.08–0.25 mm/tooth

• Axial depth of cut (ap): 0.5–2.0 × D

• Radial depth of cut (ae): 20–70% of D

Technical notes:
Use uncoated or low-friction coatings. Ensure good chip evacuation to avoid built-up edge.

5. General Milling Optimization Tips

• Increase feed per tooth before increasing cutting speed

• Reduce radial engagement to improve stability in high-speed milling

• Monitor wear patterns to fine-tune parameters

• Short tool overhang improves rigidity and tool life