Machining DataSheet for

General Information:
Material GroupM - Stainless Steel
Sub-GroupMartensitic Stainless Steel
Tensile Strength [N/mm^2]
Machinability Range35% - 55%

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Equivalent International Designations for Stainless Steel 425

Standard Name

Chemical Composition for Stainless Steel 425

Element Amount
Chromium (Cr)13%
Nickel (Ni)4%
Silicon (Si)1%
Manganese (Mn)1%
Molybdenum (Mo)0.40-1.0%
Carbon (C)0.06%
Phosphorus (P)0.04%
Sulfur (S)0.03%

Cutting Speeds Recomendations for Stainless steel - Martensitic

* Click on the speeds below for higher precision in specific conditions!

ApplicationVc (m/min)Vc (SFM)
Turning155-240510-790
Milling95-150310-490
Parting60-95200-310
Grooving90-145300-480
Drilling45-70150-230

Important! The speed estimation is given for an ideal situation:

  • Most suitable carbide grade
  • Stable tool clamping
  • Stable workpiece clamping
  • Good quality raw material
  • A short overhang of the cutting tool.
  • Nominal hardness of the material.
  • etc.
Click on the speeds in the above table to get better precision for specific parameters
Or use our Speed and Feed Calculator


Recommended Carbide Grades for Stainless Steel 425

* If you do nott understand the below table? Read This Explanation to make the most out of it!

Grade for Turning

Grade for Milling (Indexable)

Grade for Parting Off