Phone
+86-731-82250427
Address
25th floor, C3 Building, Wanda Plaza, Kaifu District, Changsha, Hunan Province, China.
Feb 4 2024UNS N0660 (Alloy 600, W.Nr. 2.4816, Inconel® 600) is a nickel-chromium alloy renowned for its nonmagnetic properties. With its substantial nickel content, this alloy exhibits remarkable resistance to corrosion from both organic and inorganic compounds, making it highly resistant to chloride-ion stress-corrosion cracking. The inclusion of chromium imparts resistance to sulfur compounds and offers protection against oxidation in high-temperature or corrosive environments. Moreover, this alloy boasts exceptional mechanical properties, including high strength and excellent workability. However, it should be noted that Inconel 600 cannot be hardened through precipitation, but rather through cold work. Its remarkable versatility has made it a preferred choice in various applications that span a wide temperature range, from cryogenic conditions to temperatures exceeding 2000°F (1095°C).
Chemical Industry: heaters, stills, bubble towers and condensers for processing of fatty acids; evaporator tubes, tube sheets and flaking trays for the manufacture of sodium sulfide; and equipment for handling abietic acid in the manufacture of paper pulp.
Heat-treating Industry: Retorts, muffles, roller hearths and other furnace components and for heat-treating baskets and trays.
Aeronautical Field: Engine and airframe components which must withstand high temperatures. Examples are lockwire, exhaust liners and turbine seals.
Electronic Field: Parts as cathode-ray tube spiders, thyratron grids, tube support members and springs.
Nuclear Applications: Nuclear reactors
|
Material |
Ni |
Cr |
Fe |
C |
Mn |
S |
Si |
Cu |
|
72.0 min |
14.0-17.0 |
6.00-10.00 |
0.15 max |
1.00 max |
0.015 max |
0.50 max |
0.50 max |
|
Material |
Tensile strength |
Yield strength 0,2 |
Elongation |
Hardness HB30 |
|
N06600 |
550-725 N/mm² |
170-345N/mm² |
35-55% |
65-85HB |
With a minimum nickel content of 72% and chromium content of 14%, Inconel 600 surpasses commercially pure nickel in its ability to withstand oxidizing conditions. It exhibits remarkable resistance to various corrosive agents. The high nickel content allows it to maintain considerable resistance even in reducing environments, while also providing excellent resistance to alkaline solutions and highly oxidizing acids. However, it is important to note that the presence of dissolved air alone is insufficient to ensure complete passivity and protection against attack by air-saturated mineral acids and specific concentrated organic acids.
The behavior of Inconel 600 during heating is influenced by several interconnected factors, including the degree of cold work, grain size, chemical composition, and dimensions of the material. As a result, the specific times and temperatures required for heat treatment are typically determined through experimental means.
In general, grain growth in Alloy 600 does not occur until the alloy is heated to approximately 1800°F (980°C). At this temperature, the finely dispersed carbide particles within the alloy's microstructure, which impede grain growth, begin to merge together. The dissolution of the carbides initiates around 1900°F (1040°C). Treating the alloy for 1 to 2 hours within the range of 2000°F to 2100°F (1090°C to 1150°C) completely dissolves the carbides and leads to an increase in grain size. This solution treatment is advantageous for achieving optimal creep and rupture strength.
Similar to other nickel-based alloys, it is essential to ensure the cleanliness of Alloy 600 before subjecting it to heating, and it should be heated in an atmosphere free from sulfur. When forging or performing open annealing, the furnace atmosphere should be slightly reducing to prevent excessive oxidation. If a bright surface is desired, the alloy can be heated in either very dry hydrogen or a vacuum, and it usually requires pickling.
The cooling rate following heating has minimal impact on the mechanical properties of Alloy 600. However, it is important to note that the alloy is susceptible to carbide precipitation within the temperature range of 1000°F to 1400°F (540°C to 760°C). To ensure freedom from sensitization and if the material is to be pickled or used in an environment that requires such freedom, it should be rapidly cooled through this temperature range.
The recommended temperature range for normal hot-working of Inconel 600 is 1600°F to 2250°F (870°C to 1230°C). For heavy hot-working, the range is 1900°F to 2250°F (1040°C to 1230°C), and for light hot-working, it can go as low as 1600°F (870°C). It is crucial to avoid working Inconel 600 in the temperature range of 1200°F to 1600°F (650°C to 870°C) as it exhibits low ductility during that range. To achieve high tensile properties, careful working at temperatures below 1200°F (650°C) is recommended.
In terms of cold-forming, Inconel 600 can be processed using standard techniques commonly employed for steel and stainless steel. The rate of work hardening is higher than that of mild steel but lower than that observed in Type 304 stainless steel.
Inconel 600 exhibits slightly better machinability compared to Type 304 stainless steel but is slightly less machinable than Type 303 free-machining stainless steel. When working with alloy 600, it is recommended to use heavy-duty equipment that can withstand the loads and efficiently dissipate the heat generated. Cutting tools should be sharp and possess the appropriate geometry for optimal performance.
Inconel 600 can be readily welded using conventional welding techniques. For the purpose of joining alloy 600, the recommended welding materials are as follows: Inconel welding electrode 182 for shielded metal-arc welding, Inconel filler metal 82 for gas tungsten-arc and gas metal-arc welding, and a combination of Inconel filler metal 82 and Incoflux 4 submerged arc flux for the submerged-arc process. These welding materials are specifically chosen to ensure effective and reliable welding of Inconel 600.
Ø Bar & Rod
Ø Plate & Sheet
Ø Coil & Strip
Ø Pipe & Tube
Ø Fitting: Flange, Tee, Elbow, Reducer etc.
Ø Forging: Ring, Shaft, Circle, Block etc.
Ronsco is a supplier with more than 27 years of experience in the special metal field, we always adheres to the business phiosophy of "customer-centered", tries its best to meet the requirements of dcustomers and pursues win-win cooperation with customers. Are you looking for special metal products one-stop supplier! Contact Us Now! Email: marketing@ronsteel.com
