General Information:
Material GroupS - Superalloys (Heat resistant and Titanium)
Hardne90.0 HB
Tensile Strength350 [N/mm^2]
Machinability Range25% - 50%

Equivalent International Designations for Material Invar 42

saeASTM F30

Chemical Composition for Material Invar 42

Iron (Fe)58%
Nickel (Ni)41%
Chromium (Cr)0.2%
Manganese (Mn)0.2%
Carbon (C)0.01%
Phosphorus (P)0.01%
Sulfur (S)0.007%
Cobalt (Co)0%
Aluminum (Al)0.001%

Cutting Speeds Recomendations for Heat resistant Fe Based

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

ApplicationVc (m/min)Vc (SFM)

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 Invar 42

* If you don't 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 Invar 42

Honing Siz0.02-0.05 mm / 0.001-0.002"
Rake Angl13° -18°
Land AnglNeutral
Land Widt0.10-0.20 mm / 0.004-0.008"
Ground InserRecommended

Learn more about carbide inserts Cutting-Edge Geometry Parameters.

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