Machining DataSheet for

General Information:
Material GroupM - Stainless Steel
Sub-GroupAustenitic Stainless Steel
Tensile Strength510-740 [N/mm^2]
Machinability36%

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Machining Stainless Steel 347

Stainless Steel 347 is an austenitic stainless steel alloy with 18% chromium and 11% nickel.

It is a chromium-nickel stainless with the addition of niobium and tantalum. The additions of these two elements eliminate carbide precipitation and improve corrosion resistance. Stainless Steel 347 has very low machinability rating of 36%.

Summery:

  • For general Turning of Stainless Steel 347 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 440 - 590 [SFM] / 135 - 180 [m/min].
  • Recommended Cutting speed range for milling with stable clamping and short overhang is 280 - 380 [SFM] / 85 - 115 [m/min]
  • For detailed cutting speed recomendations, check the Below Table, or use our Speed and Feed Calculator.

    • Equivalent International Designations for Stainless Steel 347

    Standard Name
    sae347
    wnr1.4550
    dinX10CrNiNb18-9
    unsUNS S34700
    bs347S17, 58F
    ss2338
    anforZ6CNNb18.10
    uniX6CrNiNb18 11
    unfF.3552;F.3524
    js1SUS347

    Chemical Composition for Stainless Steel 347

    Element Amount
    Chromium (Cr)18%
    Nickel (Ni)11%
    Manganese (Mn)2.00%
    Silicon (Si)0.75%
    Carbon (C)0.08%
    Phosphorus (P)0.05%
    Sulfur (S)0.03%

    Cutting Speeds Recomendations for Stainless Steel 347

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

    ApplicationVc (m/min)Vc (SFM)
    Turning135-180440-590
    Milling85-115280-380
    Parting55-70180-230
    Grooving80-110260-360
    Drilling40-50130-160

    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 347

    * 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 347

    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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