Alloy 600,INCONEL ALLOY 600,UNS N06600,WN.2.4816 Stock

Inconel 600 is a nickel-chromium alloy used for applications that require corrosion and high temperature resistance. This nickel alloy was designed for service temperatures from cryogenic to elevated temperatures in the range of 2000°F(1093°C).

General Properties:
Alloy 600 is non-magnetic and readily weldable. The alloy is used in a variety of corrosion resisting applications. The high nickel content of Alloy 600 provides a level of resistance to reducing environments, while the chromium content of the material provides resistance to weaker oxidizing environments. The high nickel content of the material provides exceptional resistance to chloride stress corrosion cracking.At the same time,Alloy 600 also provides excellent resistance to alkaline solutions. Typical applications of this nickel alloy include the chemical, pulp and paper, aerospace, nuclear engineering and heat treating industries.

Standards:
ASTM.......................... B 168
ASME.......................... SB 168
AMS ........................... 5540
Federal or Military....... MIL-N-23226
MIL-T-23227

Corrosion Resistance:
The high nickel content of Alloy 600 provides good resistance to moderate levels of reducing conditions. The nickel content of the alloy renders the alloy extremely resistant to chloride stress corrosion cracking. Alloy 600 is one alloy used in solutions of magnesium chloride. Similarly, the chromium content of Alloy 600 provides resistance to weak oxidizing environments. In this respect, Alloy 600 is an improvement over Alloy 200 (commercially pure nickel). In strong oxidizing solutions like hot, concentrated nitric acid, Alloy 600 has poor resistance. Alloy 600 is relatively unattacked by the majority of neutral and alkaline salt solutions. It is used in some caustic environments. Alloy 600 resists steam and mixtures of steam, air, and carbon dioxide. The alloy has excellent oxidation resistance to about 2100F (1149C).

Chemical Analysis,Typical Analysis (Weight %)
Ni + Co Cr Fe C Mn S Si Cu
72.0 min 14.0-17.0 6.0-10.0 0.15 max 1.00 max 0.015 max 0.50 max 0.50 max

Creep and Stress Rupture Properties:
Typical stress rupture properties of Alloy 600 are presented below in comparison to some other materials. The data indicate that Alloy 600 has modest load carrying ability in the temperature range in which creep and stress rupture are design criteria.

Heat Treatment:
Alloy 600 is not hardenable by heat treatment. The alloy can only be strengthened by cold working. Annealing is conducted to soften the material after cold working operations. Softening begins at 1600F (871C) and can be conducted to about 2100F (1149C). At temperatures of 1800F (982C) or higher, grain growth will occur rapidly. However, very short time at 1900F (1038C) may be used to soften the material without producing undue grain growth. Slow cooling or quenching produces approximately the same hardness in Alloy 600.

Processing:
--Cold Forming
Alloy 600 exhibits the excellent cold forming characteristics normally associated with chromium-nickel stainless steels. The high nickel content prevents the austenite to martensite transformation which can occur when Alloys 301 or 304 stainless steels are cold formed. The alloy has a lower work hardening rate than Alloys 301 or 304 and can be used in multiple draw forming operations where relatively large amounts of deformation occur between anneals.

Welding:
Alloy 600 can be joined by the standard resistance and fusion welding processes used for the stainless steels. A number of welding rods and wires are commercially available for joining Alloy 600 to itself and other materials. Since the alloy forms a tightly adhering oxide, which can be removed only by grinding, inert gas shielding is desirable.

Characteristics of Inconel 600:
Resistant to a wide range of corrosive media. Virtually immune to chlorine ion stress corrosion cracking Non-magnetic Excellent mechanical properties High strength and good weldability under a wide range of temperatures

Fabrication with Inconel 600:
Alloy 600 can be both hot formed and cold formed using typical processes. Hot working should be performed between 1600° F and 2250° F avoiding any work between1200-1600° F because the ductility decreases in this temperature range. Welding Alloy 600 can be achieved via shielded metal-arc welding, TIG, and MIG.

Applications:
Chemical and food processing equipment
Paper mill and alkaline digesters
Heat exchangers
Heat treating mufflers and retorts