How to choose cutting tools for workpiece Material SCM (Chromium Molybdenum Alloy Steel)

2025-11-10

1️⃣ Material Characteristics

SCM is a medium-carbon Cr–Mo alloy steel with high strength, toughness, and wear resistance.

Annealed condition: HRC 20–25
Tempered (quenched & tempered): HRC 28–40
Surface hardened or carburized: HRC 50–60

2️⃣ Recommended Cutting Tools

Machining Type	Recommended Tool Material	Recommended Coating	Description
Milling	Solid Carbide End Mill	TiAlN / TiSiN / AlCrN	Excellent heat and wear resistance, suitable for high-speed dry cutting
Drilling	Solid Carbide Drill or Cobalt HSS (HSS-Co)	TiAlN / TiSiN	Longer life, better chip evacuation for tempered steels
Turning	Carbide Insert (CVD/PVD coated)	TiCN + Al₂O₃ + TiN (CVD) or TiAlN (PVD)	High hardness and wear resistance, suitable for both continuous and interrupted cutting
Tapping	Powder HSS or HSS-E	TiN / TiCN / TiAlN	Improves lubricity and tool life

3️⃣ Suggested Cutting Conditions (Reference)

Parameter	Carbide Tool	HSS Tool
Cutting Speed (Vc)	80–180 m/min	15–30 m/min
Feed per Tooth (Fz)	0.05–0.12 mm/tooth	0.05–0.08 mm/tooth
Cutting Type	Dry or MQL (minimum lubrication)	Wet cutting recommended

4️⃣ Recommended Coatings

Coating	Key Feature	Best For
TiAlN	Excellent oxidation resistance and wear performance	General machining of tempered SCM steel
TiSiN	Extremely high hardness and thermal stability	High-speed or hard machining
AlCrN	Balanced wear and oxidation resistance	High-hardness alloy and mold steel

5️⃣ Summary

For machining SCM alloy steel, use carbide tools with TiSiN or TiAlN coating to achieve superior wear resistance, high-temperature stability, and extended tool life.
For hardened SCM (above HRC 45), choose ultra-fine grain carbide tools with TiSiN coating, and apply lower cutting speed and feed for optimal results.

Ferramenta de Carboneto Personalizada

Forro de carburo

Moinho de terminação de carboidratos

Reator de carburo

Ferramenta de Rosqueamento

Inserção do carboneto

Chack de coleção

Lâminas de serra de carboneto

Burr de carboneto

Instrumentos cirúrgicos ortopédicos

How to choose cutting tools for workpiece Material SCM (Chromium Molybdenum Alloy Steel)

How to choose cutting tools for workpiece Material SCM (Chromium Molybdenum Alloy Steel)