Machining DataSheet for

General Information:
Material GroupP - Steel
Sub-GroupFree Cutting Steel
Tensile Strength430-740 [N/mm^2]
Machinability170%

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Equivalent International Designations for Steel 12L14

Standard Name
sae12L14
wnr1.0737
din9SMnPb36
ss1926
anforS300Pb
uniCF9SMnPb36
unf12SMnP35

Chemical Composition for Steel 12L14

Element Amount
Manganese (Mn)0.85-1.15%
Sulfur (S)0.26-0.35%
Lead (Pb)0.15-0.35%
Carbon (C)0.15%

Cutting Speeds Recomendations for Steel 12L14

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

ApplicationVc (m/min)Vc (SFM)
Turning635-8552080-2800
Milling395-5301300-1740
Parting305-4101000-1340
Grooving355-4801160-1570
Drilling255-345840-1130

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 12L14

* 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 Steel 12L14

Honing Size:0.05-0.08 mm / 0.002-0.003"
Rake Angle:11° -13°
Land Angle:Positive
Land Width:0.20-0.30 mm / 0.008-0.012"

Learn more about carbide inserts Cutting-Edge Geometry Parameters.

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