Inconel® 600

Inconel® 600 - UNS N06600 - W. Nr. 2.4816 - Nickel Alloy 600 - NiCr Alloy

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Table of Contents
Datasheet Chemistry
Inventory Applications
General Data Mechanical Properties
Specifications Machining, Welding, & Processing

Alloy 600 is a nickel-chromium alloy designed for use from cryogenic to elevated temperatures in the range of 2000 °F (1093 °C) good oxidation resistance at higher temperatures, with good resistance in carburizing and chloride containing environments. The high nickel content of the alloy enables it to retain considerable resistance under reducing conditions and makes it resistant to corrosion by a number of organic and inorganic compounds. The nickel content gives it excellent resistance to chloride-ion stress-corrosion cracking and also provides excellent resistance to alkaline solutions.

Its chromium content gives the alloy resistance to sulfur compounds and various oxidizing environments. The chromium content of the alloy makes it superior to commercially pure nickel under oxidizing conditions. In strong oxidizing solutions, like hot concentrated nitric acid, 600 has poor resistance. Alloy 600 is relatively unattacked by the majority of neutral and alkaline salt solutions and is used in some caustic environments. The alloy resists steam and mixtures of steam, air, and carbon dioxide.

Alloy 600 is non-magnetic, has excellent mechanical properties and a combination of high strength and good workability and is readily weldable. Alloy 600 exhibits cold forming characteristics normally associated with chromium-nickel stainless steels.

Typical corrosion applications include titanium dioxide production (chloride route), perchlorethylene syntheses, vinyl chloride monomer (VCM), and magnesium chloride. Alloy 600 is used in chemical and food processing, heat treating, phenol condensers, soap manufacture, vegetable and fatty acid vessels and many more. Link to alloy 601 that was developed to be more resistant to high-temperature oxidation than alloy 600.


View or download Special Metals' Inconel® 600 datasheet here


Min% Max%
Ni (+Co) 72.0
Cr 14.0 17.0
Fe 6.00 10.00
C 0.15
Mn 1.00
S 0.015
Si 0.50
Cu 0.50
*Composition information provided by Special Metals' datasheet on Inconel® 600, available here.

Typical Inventory

Round Bar, Plate, Strip, Tubing, Elbow


  • Thermocouple sheaths.
  • Ethylene dichloride (EDC) cracking tubes.
  • Conversion of uranium dioxide to tetrafluoride in contact with hydrofluoric acid.
  • Production of caustic alkalis particularly in the presence of sulfur compounds.
  • Reactor vessels and heat exchanger tubing used in the production of vinyl chloride.
  • Process equipment used in the production of chlorinated and fluorinated hydrocarbons.
  • Furnace retort seals, fans, and fixtures.
  • Roller hearths and radiant tubes, especially in carbon nitriding processes.
  • Heat treating muffles and retorts.
  • Vacuum furnace fixtures.
  • Chlorination equipment to 1000 °F.
  • Titanium dioxide plants.

General Data

  • Virtually immune to chloride ion stress corrosion cracking.
  • Good caustic corrosion resistance.
  • Resistant to dry Cl2 to about 1000 °F.
  • Oxidation resistance to 2000 °F.
  • Carburization resistance.

Mechanical Properties

The typical properties listed can usually be provided in rounds, sheet, strip, plate, & custom forgings. We have the equipment to produce small quantities in special sizes to meet our customers’ specific needs. The table below shows Special Metals' Typical Mechanical-Property Ranges of Alloy 600 Rod, Bar, and Plate. For most common forms and exceptions, check out the datasheet linked underneath the table.

Form Cond. UTS ksi (MPa) YS ksi (MPa) Elong., % Rockwell Hardness
Rod & Bar CD Anneal 80-100 (550-690) 25-50 (170-345) 55-35 65-85B
Rod & Bar CD As-Drawn 105-150 (725-1035) 80-125 (550-860) 30-10 90B-30C
Rod & Bar HF Anneal 80-100 (550-690) 30-50 (205-345) 55-35 65-85B
Rod & Bar HF As-Drawn 85-120 (585-830) 35-90 (240-620) 50-30 75B-95B
Plate HR Anneal 80-105 (550-725) 30-50 (205-345) 55-35 65-85B

CD = Cold-Drawn, HF = Hot-Finished, HR = Hot-Rolled, UTS = Ultimate Tensile Strength, YS = Yield Strength

Link to Special Metals' datasheet on alloy 600

Common Specifications

Note that the specifications listed are common for this alloy but are for reference only and may be specific to a certain form. The specifications listed are not comprehensive nor indicative of any edition, revision, or similar such as an amendment. Please, reach out to our sales department to request the Material Test Report (MTR) or to confirm your required specifications.

Form Standard
Identification UNS UNS N06600, DIN 17742, DIN 17750 – 17754, EN 10095, W. Nr. 2.4816
Bar AMS 5665, ASTM B166, ASTM B564, ASME SB564, ASME SB166
Sheet, Plate, or Strip AMS 5540, ASTM B168, ASME SB168
Pipe - Seamless ASTM B167, ASME SB167
Pipe - Welded ASTM B517, ASME SB517
Tube - Seamless AMS 5580, ASTM B163, ASTM B167, ASME SB163, ASME SB167
Tube - Welded ASTM B516, ASTM B751, ASME SB516, ASME SB751
Fitting ASTM B366, ASME SB366
Forging AMS 5665, ASTM B564, ASME SB564
Weld Wire Inconel® FM 82/ UNS N06082/ AWS A5.14 ERNiCr-3/ ASME IX F-No. 43
Weld Electrode Inconel® WE 182/ UNS W86182/ W. Nr. 2.4807/ AWS A5.11 ENiCrFe-3/ ASME IX F-No. 43


Nickel and cobalt based alloys can be difficult to machinine. However, it should be emphasized that these alloys can be machined using conventional production methods at satisfactory rates. These alloys harden rapidly, generate high heat during cutting, weld to the cutting tool surface and offer high resistance to metal removal because of their high shear strengths. The following are key points which should be considered during machining operations:

  • CAPACITY - Machine should be rigid and overpowered as much as possible.
  • RIGIDITY - Work piece and tool should be held rigid. Minimize tool overhang.
  • TOOL SHARPNESS - Make sure tools are sharp at all times. Change to sharpened tools at regular intervals rather than out of necessity. A 0.015 inch wear land is considered a dull tool.
  • TOOLS - Use positive rake angle tools for most machining operations. Negative rake angle tools can be considered for intermittent cuts and heavy stock removal. Carbide-tipped tools are suggested for most applications. High speed tools can be used, with lower production rates, and are often recommended for intermittent cuts.
  • POSITIVE CUTS - Use heavy, constant, feeds to maintain positive cutting action. If feed slows and the tool dwells in the cut, work hardening occurs, tool life deteriorates and close tolerances are impossible.
  • LUBRICATION - lubricants are desirable. Soluble oils are recommended especially when using carbide tooling.


Link to Special Metals' datasheet on Inconel® 600

Inconel® is a registered trademark of the Special Metals Corporation group of companies.

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