Nickel Alloy Inconel 718 Pipes And Fittings ASTM EN DIN GB Standard Pickling Finishing

Products Specification

What is Nickel Alloy Inconel 718 Pipes And Fittings?

Nickel Alloy Inconel 718 Pipe is a nickel-chromium alloy pipe containing niobium and molybdenum, renowned for high strength, corrosion/oxidation resistance, and thermal stability up to 1300°F (704°C). Used in aerospace, oil/gas, and chemical industries under extreme conditions. Manufactured via seamless/welded processes, heat-treated to meet ASTM/ASME standards.

Nickel Alloy Inconel 718 Pipe Fittings are Ni-Cr alloy components with Nb and Mo, offering high strength, corrosion/oxidation resistance, and thermal stability up to 1300°F (704°C). Designed for extreme environments (aerospace, oil/gas), they connect piping systems per ASTM/ASME standards, solution-treated and aged.

Nickel Alloy Inconel 718 Pipes And Fittings Performace:

Nickel alloy Inconel 718 pipes and fittings is a precipitation-enhanced nickel-based high temperature and high strength alloy

Nickel Alloy Inconel 718 Pipes and Fittings exhibit excellent comprehensive properties within the temperature range of -253°C to 700°C, with yield strength below 650°C ranking highest among wrought superalloys‌.

The material demonstrates superior resistance to fatigue, radiation, oxidation, and corrosion, combined with excellent processability and weldability‌

Its long-term microstructural stability enables the fabrication of complex-shaped components, meeting stringent requirements in aerospace, nuclear energy, and oil industries‌.

The alloy’s sensitivity to thermal processing allows precise control of precipitation phases (e.g., γ” phase), achieving optimal mechanical performance through customized heat treatments‌.

Nickel Alloy Inconel 718 Pipe And Fittings Microstructure-Process-Property Relationship

The microstructure of Inconel 718 exhibits high sensitivity to hot processing techniques, with its mechanical properties directly influenced by the precipitation and dissolution dynamics of key phases (e.g., γ” precipitates)‌. By precisely controlling thermal parameters such as temperature and deformation rates, the alloy’s phase evolution can be tailored to optimize strength, fatigue resistance, and structural stability‌

This sensitivity enables the development of customized heat treatment protocols (e.g., solution treatment and aging) to balance microstructural homogeneity and performance‌. Such process flexibility allows Inconel 718 to meet diverse engineering demands—from high-strength aerospace components to corrosion-resistant oilfield equipment—by adjusting grain boundary behavior and precipitate distribution‌

Nickel Alloy Inconel 718 Pipes And Fittings domestic and foreign counterparts Grade:

Nickel Alloy Inconel 718 Pipes And Fittings Supply Specifications:
Round bar, bar, strip, pipe, seat, spheres, flanges and forgings

Nickel Alloy Inconel 718 Pipes And Fittings Chemical composition:

Nickel Alloy Inconel 718 Pipes And Fittings Physical properties:

Nickel Alloy Inconel 718 Pipes And Fittings The minimum mechanical properties of alloys at room temperature:

Nickel Alloy Inconel 718 Pipes And Fittings has the following features:

1. Easy processing
2. High tensile strength, fatigue strength, creep resistance and breaking strength at 700 ℃
3. High oxidation resistance at 1000 ° C
4. Stable chemical properties at low temperatures
5. Good welding performance

Nickel Alloy Inconel 718 Pipes And Fittings metallographic structure:

718 alloy is austenitic structure, and the γ-phase formed by precipitation hardening has excellent mechanical properties, and the δ phase generated at the grain boundary during the heat treatment has the best plasticity.
Nickel Alloy Inconel 718 Pipes And Fittings corrosion resistance:
Whether in high temperature or low temperature environment, 718 alloy has excellent resistance to stress cracking and pitting ability. 718 alloy in the high temperature oxidation resistance is particularly good.

Nickel Alloy Inconel 718 Pipes And Fittings Thermal processing performance and requirements:

Thrmal Processing
The appropriate hot working temperature is 1120-900 ℃, the cooling method can be water quenching or other rapid cooling method, after hot processing should be promptly annealed to ensure the best performance. Heat treatment materials should be heated to the upper limit of processing temperature, in order to ensure the plastic processing, deformation of 20% of the final processing temperature should not be less than 960 ℃.

Nickel Alloy Inconel 718 Pipes & fittings Cold working process performace and requirements:

cold working
The cold working should be carried out after the solution treatment, the work hardening rate is greater than the austenitic stainless steel, so the processing equipment should be adjusted accordingly, and in the cold process should be intermediate annealing process
Nickel Alloy Inconel 718 Pipes And Fittings welding process
Alloy with a satisfactory welding performance, available argon arc welding, electron beam welding, seam welding, spot welding and other methods of welding.

Inconel718 parts heat treatment process

Heat treatment of aerospace parts is usually carried out according to the standard heat treatment system and the direct aging heat treatment system.

What Nickel Alloy 718 Pipe Fittings Available

1. Elbows: butt weld: 45degree, 90degere, 180 degree / Socket weld: 45 degree 90degree
2. Tee: Butt weld: equal tee, reducing tee / Socket weld type is also available.
3. Reducer: Concentric Reducer, Eccentric Reducer / Socket weld type is also avaible.
4. Cap: butt weld and socket weld
5. Cross: 4 ways pipe cross
6. Stub End

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