Machining DataSheet for

General Information:
Material GroupS - Superalloys (Heat resistant and Titanium)
Sub-GroupSuperalloy
Tensile Strength [N/mm^2]
Machinability Range15% - 45%

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Equivalent International Designations for Material Nimonic PK25

Standard Name
sae5751A
wnr2.4666
dinNiCr18CoMo
anforNKCD20ATU

Chemical Composition for Material Nimonic PK25

Element Amount
Nickel (Ni)49.9%
Cobalt (Co)19.5%
Chromium (Cr)19%
Molybdenum (Mo)4%
Aluminum (Al)2.9%
Titanium (Ti)2.9%
Silicon (Si)0.75%
Manganese (Mn)0.75%
Carbon (C)0.08%

Cutting Speeds Recomendations for Heat resistant Ni or Co Based

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

ApplicationVc (m/min)Vc (SFM)
Turning60-180200-590
Milling45-135150-440
Parting40-115130-380
Grooving55-160180-520
Drilling55-160180-520

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 Material Nimonic PK25

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

Grade for Turning

Grade for Parting Off

Grade for Grooving

Grade for Milling (Indexable)

Recommended Insert Cutting Edge Geometry for Material Nimonic PK25

Honing Size:0.02-0.05 mm / 0.001-0.002"
Rake Angle:13° -18°
Land Angle:Neutral
Land Width:0.10-0.20 mm / 0.004-0.008"
Ground Insert:Recommended

Learn more about carbide inserts Cutting-Edge Geometry Parameters.

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