INCONEL® alloy 600 (UNS N06600)


Ni 72.0, Cr 15.5, Fe 8.0 Mn 1.0 C 0.15 Cu 0.5 Si 0.5 S 0.015

High Performance Alloys stocks and produces this grade in the following forms: Bar, wire, sheet, plate, coil, fasteners and forgings. Request quote on this grade.

 

Overview

A nickel-chromium alloy with good oxidation resistance at higher temperatures. With good resistance in carburizing and chloride containing environments.

Alloy 600 is a nickel-chromium alloy designed for use from cryogenic to elevated temperatures in the range of 2000 deg F(1093 deg C). 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 un-attacked 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.


Characteristics

  • Resistant to a wide range of corrosive media. The chromium content gives better resistance than Alloy 200 and 201 under oxidizing conditions, at the same time the high nickel gives good resistance to reducing conditions.
  • Virtually immune to chlorine ion stress corrosion cracking.
  • Demonstrates adequate resistance to organic acids such as acetic, formic and stearic.
  • Excellent resistance to high purity water used in primary and secondary circuits of pressurized nuclear reactors.
  • Little or no attack occurs at room and elevated temperatures in dry gases, such as chlorine or hydrogen chloride. At temperatures up to 550C in these media, this alloy has been shown to be one of the most resistant of the common alloys.
  • At elevated temperatures the annealed and solution annealed alloy shows good resistance to scaling and has high strength.
  • The alloy also resists ammonia bearing atmospheres, as well as nitrogen and carburizing gases.
  • Under alternating oxidizing and reducing conditions the alloy may suffer from selective oxidation.

Applications

  • 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.
  • In nuclear reactors uses are for such components as control rod inlet stub tubes, reactor vessel components and seals, steam dryers and d separators in boiling water reactors. In pressurized water reactors it is used for control rod guide tubes and steam generator baffle plates etc.
  • Furnace retort seals, fans and fixtures.
  • Roller hearths and radiant tubes, in carbon nitriding processes especially.

 

Fabricating INCONEL ® alloy 600
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.

600 sheet and plate are almost exclusively supplied in the annealed condition. Bar stock may need to be stress relieved, or annealed before performing any heading operations.

 

Chemistry

Chemical Requirements

Ni

C

Mn

Cr

S

Si

Fe

Max

.15

1.0

17.0

.015

.5

10.0

Min

72.0

14.0

6.0


Tensile Data

Mechanical Property Requirements

Ultimate Tensile

Yield Strength (0.2% OS)

Elong. in 2 in. or 50mm or 4D, min., %

R/A

Hardness

Cold Worked/As worked

Min

110 KSi

85 KSi

10

Max

 

 

Min

760 MPa

585 KSi

Max

Hot Worked/As worked

Min

90 KSi

40 KSi

25

Max

Min

620 MPa

275 MPa

Max


D- Forging quality is furnished to chemical requirements and surface inspection only. No mechanical properties required.

Specifications

Form

Standard

Metal Type

UNS N06600

Bar

ASTM B166 AMS 5665 Din 17752

Wire

Sheet

ASTM B168 AMS 5540 Din 17750

Plate

ASTM B168 AMS 5540 Din 17750

Tube

ASTM B167

Pipe

ASTM B167

Fitting

ASTM B366

Forging

ASTM B564 Din 17754

Weld Wire

FM 82/ ERNiCr-3

Weld Electrode

FM 182/ ENiCrFe-3

Din

2.4816


 

Machining


Machinability Ratings

MACHINING DATA
Carbide tools are suggested
for rates better than 50% of Type 304.
Machining Type Suggested starting rates are:
Single Point turning : Roughing - 0.15" depth, 0.015"/rev feed -175 SFM
Finishing - 0.025" depth, 0.007"/rev feed - 200 SFM
Drilling : 1/4" Dia hole - 0.004"/rev feed - 60 SFM
1/2" Dia hole - 0.007"/rev feed - 60 SFM
3/4" Dia hole - 0.010"/rev feed - 60 SFM
Reaming : Feed - same as drilling - 100 SFM
Side and Slot Milling : Roughing - 0.25" depth - 0.007"/tooth feed - 125SFM
Finishing - 0.050" depth - 0.009"/tooth feed - 140SFM
These rates are for carbide tools,
Type C-2 for roughing, drilling and reaming.
Type C-3 for finishing.

 

INCONEL® is a registered trademark of the INCO family of companies.