1,330°C High Temperature Nickel Alloy Material Nickel Alloy 718 Inconel Pipe
Product Introduction
Inconel 718 tube is a high-performance nickel chromium iron-based precipitation hardening alloy tube with excellent high-temperature strength, oxidation resistance, and corrosion resistance. Its main components include nickel (50% -55%), chromium (17% -21%), iron (balance), molybdenum (2.8% -3.3%), niobium (4.5% -5.75%), aluminum (0.2% -1%), and titanium (0.3% -1.3%), which endow Inconel 718 tube with excellent corrosion resistance, especially in high temperature and corrosive environments. Inconel 718 tube maintains good mechanical properties, including high strength and creep resistance, even at temperatures up to 1300 ° F (700 ° C). Its excellent corrosion resistance makes it perform well in various corrosive environments, including seawater, acidic solutions, and alkaline solutions. Inconel 718 tube is widely used in aerospace, chemical, marine engineering, oil and gas industries, and is used to manufacture key components such as exhaust systems, heat exchangers, reactors, and piping systems for aircraft engines.
Parameter
Chemical Properties of Inconel 718
Chemical Composition: Inconel 718 Wire primarily consists of nickel, chromium, iron, and other alloying elements such as cobalt, molybdenum, aluminum, and titanium.
Density: Approximately 8.2 g/cm³.
Melting Point: Approximately 1,330°C.
Tensile Strength: It exhibits high tensile strength, enabling it to maintain its mechanical properties at high temperatures.
Coefficient of Thermal Expansion: Approximately 12.8 × 10^(-6) /°C (within the range of 20-1000°C).
| Item | C | Mn | Fe | P | S | Si | Cu | Ni | Co | Al | Ti | Cr | Nb+Ta | Mo | B |
| Inconel 718 | ≤0.08 | ≤0.35 | rest | -- | ≤0.01 | ≤0.35 | ≤0.3 | 50-55 | ≤1 | 0.2-0.8 | -- | 17-21 | 4.75-5.5 | 2.8-3.3 | -- |
| AMS Number | Alloy | Type | UNS | Cross Ref. Spec | Misc./Shape |
| AMS 5590 | Inconel 718 | Nickel | N07718 | - | Tubing |
| AMS 5596 Foil | Inconel 718 | Nickel | N07718 | - | Foil |
| AMS 5596 Plate | Inconel 718 | Nickel | N07718 | - | Plate |
| AMS 5596 Sheet | Inconel 718 | Nickel | N07718 | - | Sheet |
| AMS 5596 Strip | Inconel 718 | Nickel | N07718 | - | Strip |
| AMS 5597 Plate | Inconel 718 | Nickel | N07718 | - | Plate |
| AMS 5597 Sheet | Inconel 718 | Nickel | N07718 | - | Sheet |
| AMS 5597 Strip | Inconel 718 | Nickel | N07718 | - | Strip |
| AMS 5662 Bar | Inconel 718 | Nickel | N07718 | - | Bar |
| AMS 5662 Custom Tube | Inconel 718 | Nickel | N07718 | - | Custom Tube |
| AMS 5662 Ring | Inconel 718 | Nickel | N07718 | - | Ring |
| AMS 5663 Bar | Inconel 718 | Nickel | N07718 | - | Bar |
| AMS 5663 Custom Tube | Inconel 718 | Nickel | N07718 | - | Custom Tube |
| AMS 5663 Ring | Inconel 718 | Nickel | N07718 | - | Ring |
| AMS 5664 Bar | Inconel 718 | Nickel | N07718 | - | Bar |
| AMS 5664 Custom Tube | Inconel 718 | Nickel | N07718 | - | Custom Tube |
| AMS 5664 Ring | Inconel 718 | Nickel | N07718 | - | Ring |
| AMS 5832 | Inconel 718 | Nickel | N07718 | - | Wire |
| AMS 5962 Bar | Inconel 718 | Nickel | N07718 | - | Bar |
| AMS 5962 Wire | Inconel 718 | Nickel | N07718 | - | Wire |
Specific Applications
Inconel 718 Tube, as a high-performance nickel based alloy, has excellent high-temperature corrosion resistance and oxidation resistance, and is widely used in the following major industrial fields:
- Aerospace:Key components such as turbine blades, turbine discs, and combustion chambers used in the manufacturing of aircraft engines require long-term operation in harsh environments such as high temperature, high pressure, and strong corrosion.
- Energy:Various elastic components used in reactor pressure vessels, control rod drive mechanisms, and nuclear fuel cycle systems for nuclear power plants.
- Petrochemical industry:Used for manufacturing petrochemical equipment such as reactors, heat exchangers, storage tanks, etc., which operate in high temperature and corrosive environments.
- Automobile manufacturing:Used for manufacturing automotive engine components such as turbine blades, exhaust pipes, etc., which require operation in high temperature and high pressure environments.
- Medical apparatus and instruments:Used for manufacturing medical devices such as artificial heart valves, artificial joints, etc., these components need to operate stably in the human body for a long time.
Advantages and Characteristics
- Excellent high-temperature strength:Inconel 718 still has good strength and rigidity in high temperature environments, and can maintain stable mechanical properties at temperatures up to 700 ° C.
- Excellent corrosion resistance:Inconel 718 has excellent corrosion resistance and can be used for a long time in oxidizing, acidic, alkaline, and chloride ion environments.
- Good antioxidant properties:Inconel 718 has excellent oxidation resistance in high-temperature oxidation environments, and can generate dense oxide films at high temperatures, effectively preventing corrosion.
- Excellent fatigue resistance:Inconel 718 has excellent fatigue resistance and can be used for a long time under large cyclic loads.
- Good processing performance:Inconel 718 has excellent cold forming characteristics and can be processed through common processing techniques such as forging, rolling, bending, etc.
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Related Questions and Answers
What is the corrosion resistance of Inconel 718 Tube?
Answer: Inconel 718 Tube has excellent corrosion resistance, especially in chloride and sulfide stress corrosion cracking environments, and is suitable for harsh environments such as marine and oil and gas.
What is the temperature performance of Inconel 718 Tube?
Answer: Inconel 718 Tube maintains its mechanical properties in the temperature range of -423 ° F to 1300 ° F and has good oxidation resistance at temperatures up to 1800 ° F.
What is the welding performance of Inconel 718 Tube?
Answer: Inconel 718 Tube has good welding performance, low sensitivity to welding cracks, and can maintain good welding quality even in high stress environments.
What are the main application areas of Inconel 718 Tube?
Answer: Inconel 718 Tube is widely used in aerospace, oil and gas, nuclear energy, chemical and marine engineering fields, especially in high temperature, high pressure and corrosive environments.
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