General Information:
Material GroupP - Steel
Sub-GroupCarbon Steel
Tensile Strength720-950 [N/mm^2]
Machinability Range55% - 80%

Equivalent International Designations for Steel 20AP


Chemical Composition for Steel 20AP

Carbon (C)1%
Manganese (Mn)0.25-0.50%
Silicon (Si)0.3%
Sulfur (S)0.045%
Phosphorus (P)0.035%

Cutting Speeds Recomendations for Non-alloyed steel 0.26-0.50% Carbon

* 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 Steel 20AP

* 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 Steel 20AP

Honing Siz0.05-0.08 mm / 0.002-0.003"
Rake Angl11° -13°
Land AnglPositive
Land Widt0.20-0.30 mm / 0.008-0.012"

Learn more about carbide inserts Cutting-Edge Geometry Parameters.

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