Machining DataSheet for

General Information:
Material GroupM - Stainless Steel
Sub-GroupFerritic Stainless Steel
Tensile Strength590-780 [N/mm^2]
Machinability90%

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Machining Stainless Steel 416

Stainless Steel 420F is a martensitic (magnetic) stainless steel alloy with 13% chromium, 0.2% carbon, and a machinability rating of 90%.

The amounts of carbon (Range 0.1-1.2%) and chromium (10-15%) are the main factors that affect the machinability of martensitic stainless materials.

  • More carbon ==> More strength, but lower machinability and less corrosion resistance
  • More chromium==> More corrosion resistance, but lower machinabilty

Although 416 alloy does not have a suffix 'F' (Like 420F and 430F), stainless Steel 416 has the highest machinability rating of all stainless materials (90%). As with most freecut steels, the machinability is increased with the addition of sulfur (0.25%). However, this comes at the expense of reducing corrosion resistance, formability, and weldability. It is mainly used on small diameter parts on Swiss-type lathe machines when cycle time is critical.

Summery:

  • For general Turning of Stainless Steel 416 at stable conditions use a grade with a Semi Hard substrate and CVD coating.
  • In case you are running at a cutting speed that is lower than 390 SFM (120 m/min), it is better to use a grade with a
    • Semi 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 1210 - 1660 [SFM] / 370 - 505 [m/min].
  • Recommended Cutting speed range for milling with stable clamping and short overhang is 770 - 1030 [SFM] / 235 - 315 [m/min]
  • For detailed cutting speed recomendations, check the Below Table, or use our Speed and Feed Calculator.

    • Equivalent International Designations for Stainless Steel 416

    Standard Name
    sae41600
    wnr1.4005
    dinX12CrS13
    bs416S21
    ss2380
    anforZ11CF13
    uniX12CrS13
    unfF.3411
    js1SUS416

    Chemical Composition for Stainless Steel 416

    Element Amount
    Chromium (Cr)13%
    Manganese (Mn)1.25%
    Nickel (Ni)1%
    Silicon (Si)1.00%
    Molybdenum (Mo)0.60%
    Sulfur (S)0.15-0.25%
    Carbon (C)0.15%
    Phosphorus (P)0.07%

    Cutting Speeds Recomendations for Stainless Steel 416

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

    ApplicationVc (m/min)Vc (SFM)
    Turning370-5051210-1660
    Milling235-315770-1030
    Parting150-200490-660
    Grooving225-300740-980
    Drilling105-145340-480

    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 Stainless Steel 416

    * 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 Stainless Steel 416

    Honing Size:0.03-0.05 mm / 0.001-0.002"
    Rake Angle:9° -11°
    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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