Machining DataSheet for

General Information:
Material GroupP - Steel
Sub-GroupHigh Carbon Steel
Tensile Strength640-830 [N/mm^2]
Machinability60%

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Machining Steel 1055

Steel 1055 is a High Carbon Steel material with 0.6% carbon content. Carbon steels range in carbon content between 0.08% to 1%. The machinability is very sensitive to the amount of carbon. Materials with very low carbon content (below 0.15%) are too soft and gummy, and materials with a carbon content above 0.5% are harder and thus have lower machinability

Since Steel 1055, has 0.6%, it is relatively more challenging to machine compared with average carbon steel and has a machinability rating of 60%. On the other hand, it is stronger and has better mechanical properties. High carbon steels are less popular since when better mechanical properties are required, the better choice is alloy steels.

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

Summery:

  • For general Turning of Steel 1055 at stable conditions use a grade with a Hard substrate and CVD coating.
  • In case you are running at a cutting speed that is lower than 490 SFM (150 m/min), it is better to use a grade with a
    • Hard substrate and PVD coating.
  • For general Milling use a grade with a Semi Hard substrate and PVD coating.
  • For detailed carbide grades recommendations, check the Below Chart, or use the Grades Wizrad.
  • Recommended Cutting speed range for turning at stable conditions is 740 - 1000 [SFM] / 225 - 305 [m/min].
  • Recommended Cutting speed range for milling with stable clamping and short overhang is 460 - 620 [SFM] / 140 - 190 [m/min]
  • For detailed cutting speed recomendations, check the Below Table, or use our Speed and Feed Calculator.

    • Equivalent International Designations for Steel 1055

    Standard Name
    sae1055
    wnr1.1203
    dinCk55
    bs070M55
    anforXC55
    uniC50
    unfC55K
    js1S55C

    Chemical Composition for Steel 1055

    Element Amount
    Manganese (Mn).60-.90%
    Carbon (C).50-.60%
    Sulfur (S)0.05%
    Phosphorus (P)0.04%

    Cutting Speeds Recomendations for Steel 1055

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

    ApplicationVc (m/min)Vc (SFM)
    Turning225-305740-1000
    Milling140-190460-620
    Parting105-145340-480
    Grooving125-170410-560
    Drilling90-120300-390

    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 1055

    * 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 1055

    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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