Machining DataSheet for

General Information:
Material GroupP - Steel
Sub-GroupLow Alloy Steel
Hardness187.0 HB
Tensile Strength600 [N/mm^2]

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Machining Steel A105

Steel A105 is a popular low-alloy forging steel with a carbon content of 0.4% and an additional 1.6% of different alloying elements in small amounts (See details in the below table). Steel A105 has a machinability rating of 66%. In many publications, it is also reffed to as Carbon Steel, since the alloying elements are in very small quantities. It is mainly used as forging steel for pipe parts such as flanges, fittings, nozzles.

It is relatively easy to machine compared with average Low-Alloy steels. A good starting point would be a cutting speed of 800-1100 SFM (245-335 m/min) for turning, and 510-670 SFM (155-205 m/min) for milling.

You can find here a list of machinability Ratings for different Low Alloy Steels.


  • For turning operations on Steel A105, it is best to use inserts with thick CVD coating and medium hardness. For milling, any all-around carbide grade is suitable.
  • For detailed carbide grades recommendations, check the Below Chart, or use the Grades Wizrad.
  • Recommended Cutting speed range for turning at stable conditions is 800 - 1100 [SFM] / 245 - 335 [m/min].
  • Recommended Cutting speed range for milling with stable clamping and short overhang is 510 - 670 [SFM] / 155 - 205 [m/min]
  • For detailed cutting speed recomendations, check the Below Table, or use our Speed and Feed Calculator.

  • Equivalent International Designations for Steel A105

    Standard Name

    Chemical Composition for Steel A105

    Element Amount
    Manganese (Mn)0.6-1.05%
    Nickel (Ni)0.4%
    Copper (Cu)0.4%
    Carbon (C)0.35%
    Chromium (Cr)0.3%
    Silicon (Si)0.15-0.35%
    Molybdenum (Mo)0.12%
    Phosphorus (P)0.035%
    Sulfur (S)0.04%

    Cutting Speeds Recomendations for Steel A105

    * 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 A105

    * 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 A105

    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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