Machining DataSheet for

General Information:
Material GroupS - Superalloys (Heat resistant and Titanium)
Sub-GroupSuperalloy
Hardness86.0 HRB
Tensile Strength630 [N/mm^2]
Machinability20%

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Machining Material Hastelloy C-276

Hastelloy C276, a trademark of Haynes International, is a nickel-based alloy (56% Ni) classified as a nickel-chromium-molybdenum alloy that posses exceptional resistance to stress corrosion cracking in chloride-bearing solutions.
It is used for components that need extreme corrosion resistance in harsh environments where more conventional materials like Stainless 316 are insufficient.
Machining Hastelloy is similar to other nickel-based superalloys with moderate hardness (like Inconel 625, for example). It should be machined with positive and sharp cutting edges. Geometries that are suitable for austenitic stainless steel will also work well on Hastelloy. However, it is better to use geometries and grades that are specially designed for superalloys.
The machinability rating of Hastelloy X is about 20%. You can find here machinability values for other superalloys.

Summery:

  • For general Turning of Material Hastelloy C-276 at stable conditions use a grade with a Very 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 230 - 300 [SFM] / 70 - 90 [m/min].
  • Consider using CBN inserts. Although they cost more than twice, they enable increasing the cutting speed by 2-4 times (relative to carbide). Learn More ⇒
  • Recommended Cutting speed range for milling with stable clamping and short overhang is 160 - 230 [SFM] / 50 - 70 [m/min]
  • For detailed cutting speed recomendations, check the Below Table, or use our Speed and Feed Calculator.

    • Equivalent International Designations for Material Hastelloy C-276

    Standard Name
    wnr2.4819
    dinG-NiMo30
    unsUNS N10276
    anforNC15D14KFe

    Chemical Composition for Material Hastelloy C-276

    Element Amount
    Nickel (Ni)56%
    Chromium (Cr)15%
    Iron (Fe)5.5%
    Cobalt (Co)2.5%

    Cutting Speeds Recomendations for Material Hastelloy C-276

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

    ApplicationVc (m/min)Vc (SFM)
    Turning70-90230-300
    Milling50-70160-230
    Parting45-60150-200
    Grooving60-80200-260
    Drilling60-80200-260

    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 Material Hastelloy C-276

    * 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 Material Hastelloy C-276

    Honing Size:0.02-0.05 mm / 0.001-0.002"
    Rake Angle:13° -18°
    Land Angle:Neutral
    Land Width:0.10-0.20 mm / 0.004-0.008"
    Ground Insert:Recommended

    Learn more about carbide inserts Cutting-Edge Geometry Parameters.

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