Machining DataSheet for

General Information:
Material GroupM - Stainless Steel
Sub-GroupAustenitic Stainless Steel
Tensile Strength510-710 [N/mm^2]
Machinability40%

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Machining Stainless Steel 316

Stainless Steel 316 is an austenitic stainless steel alloy with 17% chromium and 13% nickel. It is the most popular stainless steel when high corrosion resistance is required.

It is a chromium-nickel-molybdenum stainless with low carbon (0.08%) content. The low carbon content combined with high chromium/nickel/molybdenum amount results in soft material with high resistance to machining and a low machinability rating of 40%.

The molybdenum gives 316 better corrosion-resistant properties than 304 stainless, notably higher resistance to pitting and crevice corrosion in chloride environments.
It is mainly used in food preparation equipment, laboratory devices, chemical containers, fasteners, and heaf-exchangers.

316 stainless has several variations:

NameExplanationMachinability (%)
316 (Regular)40%
316LL stands for Low Carbon. The carbon amount is 0.03%, vs 0.08% in the other 316 alloys. It is mainly used in pulp-handling equipment, rubber production, and high-temperature equipment.35%
316LVMVM stands for Vacuum Melt required to achieve high-level micro-cleanliness. This alloy is mostly used in medical applications such as bone screws35%
316NN stands for Nitrogen. It is produced with 0.10–0.16% nitrogen, which improves resistance against pitting and crevice corrosion. 316N is mainly used for chemical handling accessories.~40%
316FF stands for Freecut. It has a minimum content of 0.1% of Sulfur, which enhances its machinability. It is primarily used on Swiss-type Machines (Screw Machines) when productivity is a crucial factor. ~50%

The main characteristic of austenitic stainless is the low carbon content combined with high chromium/nickel content. The result is a ductile material with high resistance to machining. Because of its softness, you must use a sharp and positive cutting edge. One of the biggest problems in machining stainless steel 316 is the forming of notch wear at the depth of the cut line, which results in a burr forming on the workpiece. The best method to avoid notch wear is to constantly change the machining depth.

Summery:

  • For general Turning of Stainless Steel 316 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 490 - 660 [SFM] / 150 - 200 [m/min].
  • Recommended Cutting speed range for milling with stable clamping and short overhang is 310 - 410 [SFM] / 95 - 125 [m/min]
  • For detailed cutting speed recomendations, check the Below Table, or use our Speed and Feed Calculator.

  • Equivalent International Designations for Stainless Steel 316

    Standard Name
    sae316
    wnr1.4401
    dinX5CrNiMo17-13-3
    bs316S33, 58J
    ss2343
    anforZ6CND19.12.03
    uniX5CrNiMo1713
    unfF.3543
    js1SUS316

    Chemical Composition for Stainless Steel 316

    Element Amount
    Chromium (Cr)17%
    Nickel (Ni)13%
    Manganese (Mn)2.00%
    Molybdenum (Mo)1.50%
    Silicon (Si)0.75%
    Carbon (C)0.08%
    Phosphorus (P)0.04%
    Sulfur (S)0.03%

    Cutting Speeds Recomendations for Stainless Steel 316

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

    ApplicationVc (m/min)Vc (SFM)
    Turning150-200490-660
    Milling95-125310-410
    Parting60-80200-260
    Grooving90-120300-390
    Drilling45-60150-200

    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 316

    * 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)