Inconel is a nickel-based high-temperature alloy. It is widely used in aerospace, chemical, nuclear, oil, and gas industries due to its excellent corrosion resistance, high-temperature resistance, and mechanical strength in extreme environments. Its excellent performance makes it irreplaceable in high-temperature and highly corrosive environments.
Commonly used brands have Inconel 625, Inconel 600 Inconel 601, Inconel 718, Inconel x750, etc.
Inconel Alloys
Composition and Characteristics of Inconel
The main component of Inconel is nickel (Ni), which is generally more than 50%, and it also contains chromium (Cr), iron (Fe), molybdenum (Mo), cobalt (Co), aluminum (Al) and other elements. The precise ratio of these elements gives Inconel the following key features:
1. High-Temperature Resistance
Inconel alloy performs well in high-temperature environments, usually maintaining good mechanical properties and stability under extreme conditions above 600°C, especially maintaining strength in ultra-high temperature environments of 1100-1300°C. This makes it very suitable for parts that require high-temperature resistance, such as jet engines and gas turbines.
2. Excellent Oxidation and Corrosion Resistance
Due to its high proportion of nickel and chromium, Inconel can form a stable oxide film at high temperatures to prevent the material from being oxidized. In addition, Inconel has extremely strong corrosion resistance to a variety of chemicals, especially in chloride and sulfide environments, and is suitable for equipment manufacturing in the chemical industry.
3. High Strength and Mechanical Stability
Inconel can maintain good tensile strength and creep resistance at high temperatures, which makes it very suitable for use in environments with extremely high stress, such as nuclear reactors, spacecraft, and deep-well oil and gas extraction equipment.
4. Weldability and Processing Performance
Although Inconel has high hardness and high strength, it still has good processability and can be formed through conventional processing processes such as welding, forging, and cutting. In addition, the performance of Inconel materials will not drop significantly after welding, which makes it very popular in fields that require high-precision manufacturing.
Inconel 625
Overview of Inconel 625 Features and Application Areas:
The alloy is a solid solution-strengthened nickel-based deformed superalloy with molybdenum and niobium as the main strengthening element. It has excellent corrosion resistance and high oxidation properties. It has good tensile and fatigue properties from low temperatures to 980℃ and is resistant to stress corrosion under a salt spray atmosphere. Therefore, it can be widely used in the manufacture of aerospace engine components, aerospace structural components, and chemical equipment.
Incone l625 Similar Brand:
NS336, GH3625, GH625(China), NC22DNb(France), W.N.R.2.4856 (Germany), N06625
Inconel625 Metallographic Structure:
The structure of the alloy in a solid solution state is austenite matrix and a small amount of TiN, NbC, and M6C phases. After long-term aging at 650~900℃, the precipitated phases are M23C6 and M6C.
Inconel 625 Process Performance and Requirements:
- The alloy has good cold and hot formability, and the forging temperature of the ingot is 1120℃.
- The average grain size of the alloy is closely related to the deformation degree of the forging and the final forging temperature.
- The welding performance of the alloy is good, and it can be used for argon arc welding with tungsten electrodes or this alloy as filler in a protective atmosphere, it can also be brazed connection and resistance seam welding.
- Surface treatment process: remove the oxide skin on the surface of the alloy first alkali washing, and then pickling in nitric acid, hydrofluoric acid – aqueous solution.
- When the alloy is cold-processed, when the processing amount is greater than 15%, it should be annealed after hot processing.
Inconel625 Application Fields:
Components of organic chemical processes containing chlorides, especially where acid chloride catalysts are used;
Digesters and bleaching tanks for the pulp and paper industry;
Absorption tower, reheater, flue gas inlet baffle, fan (wet), agitator, baffle, and flue in flue gas desulfurization system;
For manufacturing equipment and components for use in acidic gas environments;
Acetic acid and acetic anhydride reaction generator;
Sulfuric acid condenser, etc.
Inconel 625 Main Specifications:
Inconel 625 seamless pipe, Inconel625 steel plate, Inconel 625 round steel, Inconel625 forging, Inconel625 flange, Inconel 625 ring, Inconel 625 welded pipe, Inconel 625 steel strip, Inconel625 straight bar, In conel 625 wire and matching welding material, Inconel 625 workpiece.
If you are looking for Inconel suppliers and want to buy Inconel 625 alloys, please contact us for a quote!
Inconel 600 Nickel-Based Alloy
Inconel 600 Features and Application Areas:
The alloy is a nickel-chromium-iron based solid solution strengthened alloy, with good high-temperature corrosion resistance and oxidation resistance, excellent hot and cold processing and welding performance, at 700℃ below has satisfactory thermal strength and high plasticity. The alloy can be strengthened by cold working, and can also be joined by resistance welding, soldering, or brazing, suitable for making oxidation-resistant parts under low loads below 1100 ° C.
Inconel 600 Similar Brand:
GH600 (China), NC15FE(France), W.N.R.2.4816, NiCr15Fe(Germany), NA14(UK), NS312, UNSN06600
Inconel 600 Metallographic Structure:
The alloy was treated at 1120℃ for 2h, and only TiN nitride and Cr7C3 carbides were found. After long-term aging at 870℃ and 1500℃, Cr7C3 and TiN remained in the microstructure, indicating that the microstructure of the alloy was stable.
Inconel 600 Process Performance And Requirements:
- The alloy has good thermal processing performance, and the forging temperature of the ingot is 1110℃ ~ 1140℃.
- The average grain size of the alloy is closely related to the deformation degree of the forging and the final forging temperature.
- The alloy has good weldability and can be connected by various methods such as original arc welding, argon arc welding, resistance welding, and brazing. Large or complex welded structural parts should be annealed at 870℃ for 1h after soldering to eliminate welding stress.
- The alloy must be machined after heat treatment, due to the work hardening of the material, it is appropriate to use lower cutting speed and heavy feed than the processing of low alloy standard austenitic stainless steel, to drive into the cold hardening of the surface below.
Inconel 600 Applications:
- Erosive atmosphere of thermocouple casing
- Production of vinyl chloride monomer: resistance to chlorine gas, hydrogen chloride, oxidation and carbonization corrosion
- Uranium oxidation conversion to hexafluoride: resistance to hydrogen fluoride corrosion
- Areas of production and use of caustic alkali metals, especially in the environment where sulfides are used
- Titanium dioxide process with chlorine gas
- Production of organic or inorganic chlorides and fluorides: resistance to chlorine and fluorine gas corrosion
- Nuclear reactors
- Curved neck bottles and components in heat treatment furnaces, especially in carbonization and nitriding atmospheres
- The catalytic regenerator in petrochemical production is recommended to use alloy 600 in applications above 700℃ to obtain a long service life
Main Specifications of Inconel 600:
Inconel 600 seamless pipe, Inconel 600 steel plate, Inconel 600 round steel, Inconel600 forging, Inconel 600 flange, Inconel 600 ring, Inconel 600 welded pipe, Inconel 600 steel strip, Inconel 600 straight bar, Inconel 600 wire and matching welding material, Inconel 600 processing workpiece.
If you are looking for Inconel suppliers and want to buy Inconel 600 alloys, please contact us for a quote!
Inconel 601 Nickel-Based Alloy
Introduction to Inconel 601:
Inconel 601, is a nickel-based alloy material. At high temperatures, it has excellent oxidation resistance, good carbonization resistance, good oxidation resistance to the sulfur-containing atmosphere, good mechanical properties at room temperature and high temperature, and good stress corrosion cracking resistance, due to the control of carbon content and grain size, 601 has a high creep fracture strength, so it is recommended to use 601 in the field above 500℃.
Inconel 601 Corresponding Brand:
UNS N06601, W.N.R.2.4851, NS3103/ NS313, 1Cr23Ni60Fe13Al, NCF601
Inconel 601 Has The Following Characteristics:
- Excellent oxidation resistance at high temperatures
- Good carbonization resistance
- Good anti-oxidation sulfur-containing atmosphere
- It has good mechanical properties at room temperature and high temperature
- Good resistance to stress corrosion cracking due to the control of carbon content and grain size, 601 has a high creep fracture strength, so it is recommended to use 601 in the field above 500℃
Inconel 601 Metallographic Structure:
601 is a face-centered cubic lattice structure.
Inconel 601 Corrosion Resistance:
An important property of 601 alloy is its oxidation resistance at temperatures up to 1180 ° C. Even under very harsh conditions, such as during heating and cooling cycles, 601 can produce a dense oxide film and obtain high resistance to spalling. 601 has good carbonization resistance. Due to its high chromium and aluminum content, 601 has good oxidation resistance in high-temperature sulfur-containing atmospheres.
Applications of Inconel 601:
- Pallet, basket, and fixture for the heat treatment plant.
- Wire split annealing and radiation tubes, high-speed gas burners, and wire mesh belts in industrial furnaces.
- Isolation tank in ammonia reforming and catalytic support grid in nitric acid manufacturing.
- Exhaust system components
- The combustion chamber of a solid waste incinerator
- Pipe support and soot disposal parts
- Exhaust gas detoxification system components
- Oxygen reheater
Main Specifications of Inconel 601
Inconel 601 seamless pipe, Inconel 601 steel plate, Inconel 601 round steel, Inconel 601 forging, Inconel 601 flange, Inconel 601 ring, Inconel 601 welded pipe, Inconel 601 steel strip, Inconel 601 straight bar, Inconel 601 wire and welding material, Inconel 601 workpiece.
If you are looking for Inconel suppliers and want to buy Inconel 601 alloys, please contact us for a quote!
Inconel 718
Features and Application Areas of Inconel 718:
Inconel 718 is a precipitation-hardened superalloy, nickel-based alloy, resistant to high temperature and corrosion.
The alloy has good comprehensive properties in the temperature range of -253 ~ 700℃, the yield strength below 650℃ ranks first in the deformation superalloy, and has good fatigue resistance, radiation resistance, oxidation resistance, corrosion resistance, good processing performance, and good welding performance. It can manufacture various parts with complex shapes and has been widely used in the above temperature range in aerospace, nuclear energy, petroleum industry, and extrusion molds.
Inconel 718 Similar Brand:
N07718, GH4169, GH169(China), NC19FeNb(France), W.N.R.2.4668 NiCr19Fe19Nb5(Germany)
Inconel 718 Metallographic Structure:
The microstructure of the alloy in a standard heat treatment state is composed of the matrix NbC phase.
Inconel 718 Process Performance and Requirements:
- Because of the high niobium content in Inconel 718 alloy, the degree of niobium segregation in the alloy is directly related to the gold treatment process.
- In order to avoid excessive segregation of the elements in the ingot, the diameter of the ingot is not greater than 508mm.
- The homogenized alloy has good thermal processing performance, and the opening heating temperature of the ingot shall not exceed 1120℃.
- The average grain size of the alloy is closely related to the deformation degree of the forging and the final forging temperature.
- The alloy has satisfactory welding performance and can be welded by argon arc welding, electron beam welding, seam welding, spot welding, and other methods.
- Alloy different solution treatment and aging treatment processes will get different material properties. Due to the low diffusion rate of the “phase”, the best mechanical properties of Inconel 718 alloy can be obtained through long-term aging treatment.
Inconel 718 Main Specifications:
Inconel 718 seamless pipe, Inconel 718 steel plate, Inconel 718 round steel, Inconel 718 forging, Inconel 718 flange, Inconel 718 ring, Inconel 718 welded pipe, Inconel 718 steel strip, Inconel 718 straight bar, Inconel 718 wire and matching welding material, Inconel 718 round cake, Inconel 718 flat steel, Inconel 718 hexagonal bar, Inconel 718 size head, Inconel 718 elbow, Inconel 718 tee, Inconel 718 workpiece, Inconel 718 Bolts and nuts, Inconel 718 fasteners.
If you are looking for Inconel suppliers and want to buy Inconel 718 alloys, please contact us for a quote!
Inconel x-750
Inconel x-750 Features and Application Areas Overview:
The alloy is mainly based on ‘[Ni3(Al, Ti, Nb)] phase aging strengthened nickel-based superalloy, has good corrosion resistance and oxidation performance below 980℃, has high strength below 800℃, has good relaxation resistance below 540℃, but also has good formability and welding performance.
The alloy is mainly used in the manufacture of aircraft engines operating below 800 ° C and requires high-strength corrosion resistance rings, structural parts and bolts, and other parts, operating below 540 ° C with moderate or low stress and require relaxation resistance of flat springs and helical springs. It can also be used to manufacture turbine turbine blades and other parts.
Inconel x-750 Similar Brand:
GH4145GH145(China), NCl5FeTNbA(France), W.N.R.2.4669,NiCr15Fe7TiAl(Germany), NCF750(Japan)
Inconel x-750 Metallographic Structure:
The microstructure of the alloy in the standard heat treatment state is composed of the matrix, Ti(C, N), Nb(C, N), M23C6 carbide, and [Ni3(Al, Ti, Nb)] phase, the content is about 14.5%, which is the main strengthening phase of the alloy.
Inconel x-750 Process Performance and Requirements:
1. Alloy forging temperature between 1220 ~ 950℃ are easy to form. The alloy underwent solution treatment after a vigorous forming process.
2. The average grain size of the alloy is closely related to the deformation degree of the forging and the final forging temperature.
3. The alloy has good welding performance and can be a variety of welding. The strength approximating that of full heat treatment can be obtained by aging treatment after welding.
4. The heat treatment of the parts is carried out in a sulfur-free neutral or reducing atmosphere to avoid vulcanization.
Inconel x-750 Main Specifications:
Inconel X-750 seamless pipe, Inconel X-750 steel plate, Inconel X-750 round steel, Inconel X-750 forging, Inconel X-750 flange, Inconel X-750 ring, Inconel X-750 welded pipe, Inconel X-750 steel strip Inconel X-750 straight bar, Inconel X-750 wire, and matching welding material, Inconel X-750 round pie, Inconel X-750 flat steel, Inconel X-750 hexagonal bar, Inconel X-750 size head, Inconel X-750 elbow, Inconel X-750 tee, Inconel X-750 workpiece, Inconel X-750 bolt and nut, Inconel X-750 fastener.
If you are looking for Inconel suppliers and want to buy Inconel X-750 alloys, please contact us for a quote!
Application of Inconel
1. Aerospace
In the aerospace field, especially in jet engines and gas turbines, materials need to withstand extremely high temperatures and pressures while maintaining strength and corrosion resistance. Inconel’s high-temperature stability makes it the material of choice for manufacturing these key components.
- Inconel 718: As an age-hardening alloy, it can withstand temperatures up to 650°C and has excellent creep and fatigue resistance. It is often used in key components such as turbine blades, combustion chambers, and gas turbine rotors.
- Inconel 625: It has excellent oxidation and corrosion resistance, especially in engine exhaust systems, and can withstand extremely high temperatures and acidic environments.
2. Chemical Industry
Equipment in the chemical industry is often exposed to highly corrosive chemicals and high-temperature environments. Inconel has become an ideal material for chemical equipment due to its excellent corrosion resistance and high-temperature resistance.
- Inconel 600: Due to its good oxidation and corrosion resistance, it is suitable for high-temperature components of chemical equipment, such as evaporators, reactors, heating elements, etc.
- Inconel 625: Resistant to pitting and crevice corrosion, suitable for equipment in acidic environments, such as chemical reaction towers, corrosive media processors, etc.
3. Marine Engineering and Oil and Gas
In marine environments and oil and gas production, we often face harsh working conditions such as high salinity, high pressure, and corrosion. Inconel alloy can provide strong corrosion resistance and mechanical strength to ensure the stable operation of equipment in deep sea and underground.
The shipping box is loaded from an offshore oil rig to the supply vessel at sunset.
- Inconel 625: Due to its excellent corrosion resistance and mechanical properties, it is often used to manufacture deep-sea oil and gas production equipment such as submarine pipelines, oil well equipment, valves, pumps, etc., and can maintain long-term durability in high-salinity marine environments.
- Inconel 718: With high strength and fatigue resistance, it is very suitable for deep-well oil and gas production equipment and can withstand extreme conditions under deep-sea high pressure.
4. Nuclear Industry
Nuclear power plants and nuclear reactors require materials that can withstand high temperatures, radiation, and corrosive environments. Inconel materials are widely used in key components of the nuclear industry due to their excellent corrosion and radiation resistance.
- Inconel 690: With high chromium content, it can show excellent corrosion resistance in nuclear reactor cooling systems. It is particularly suitable for working in high radiation and corrosive environments. It is often used in steam generator tubes, nuclear reactor vessels, and other components.
- Inconel 600: It is widely used in nuclear fuel rods and other high-temperature components, and can withstand the challenges of high temperature and radiation corrosion.
5. Power Generation and Electric Power Industry
In the power generation and electric power industry, especially coal-fired power plants and gas turbine power plants, equipment needs to work in high-temperature, high-pressure, and corrosive gas environments for a long time. Inconel alloy has become an important material for manufacturing this equipment because of its strength and corrosion resistance at high temperatures.
- Inconel 625: It is commonly used in high-temperature equipment such as boilers, heat exchangers, heaters, etc., and can withstand high-temperature oxidation and corrosion.
- Inconel 617: It is widely used in gas turbine components, especially in areas where extremely high temperatures are required, such as burners and exhaust systems.
6. Automotive Industry
The engines of modern cars, especially racing cars and high-performance cars, require materials that can withstand high temperatures and high pressures while remaining lightweight. Inconel is an ideal material for racing engines and exhaust systems due to its high strength and heat resistance.
- Inconel 625: used in racing turbochargers, exhaust systems, and engine parts, it can effectively cope with high temperatures and corrosion.
Inconel plays an important role in many industries such as aerospace, chemical, marine, nuclear industry, power generation, and automotive. Different types of Inconel alloys, such as Inconel 625, Inconel 718, Inconel 600, etc., meet the needs of various extreme environments with their excellent performance in high temperatures and corrosion resistance. If you need more information or quotes about Inconel alloys, please feel free to contact us.