Product Overview

Inconel 718, produced by Qinchuan New Materials (Zhengzhou) Co., Ltd., is a precipitation-hardening deformed superalloy widely used in industrial fields. The alloy primarily strengthens with γ'' phase and γ' phase as the auxiliary, offering excellent strength-toughness match and microstructure stability. Inconel 718 alloy exhibits the highest yield strength below 650°C, while also featuring ultra-low temperature stability, excellent corrosion resistance, fatigue resistance, weldability, and machinability. It serves as a core high-end structural material in the aerospace, nuclear energy, and petrochemical industries.

Main Product Features

• Excellent high-temperature strength and structural stability: Maintains extremely high yield strength and anti-creep properties below 650°C, making it resistant to stress relaxation, plastic deformation, and structural deterioration under long-term high-temperature service.

• Comprehensive corrosion and oxidation resistance: The matrix is rich in chromium and molybdenum alloy elements, demonstrating stable antioxidant, ant硫化, ant-pitting, and anti-galvanic corrosion effects in stringent environments such as high-temperature oxidation, sulfidation, seawater salt spray, humid atmosphere, and acidic media.

• Excellent processing and welding properties: Excellent plasticity in annealed state, supports forging, rolling, stamping and other forming processes, good cutting processing performance. Alloy has good welding stability and is not prone to welding cracks.

• Super-wide temperature range comprehensive performance balance: Effective service temperature range covers ultra-low temperature of -253℃ to high temperature of 700℃, with no brittle fracture at low temperature and no abrupt degradation at high temperature, outstanding performance in resistance to low temperature brittle fracture, radiation, and alternating fatigue.

Product Detailed Parameters

Scope of Application

Inconel 718 alloy is widely used in the following fields:

• Aerospace: Core load-bearing components for aeroengines and gas turbines, rocket engines, high-temperature load-bearing structural parts for spacecraft.
• Energy and Nuclear Power: Steam turbines, gas turbines, high-temperature rotors and hot-end components, nuclear reactor structural parts, seals, pipeline fittings.
• Petroleum & Chemical Industry: Deep well oil extraction equipment, high temperature and high pressure reactors, cracking unit components, oil and gas transmission pipelines, corrosion-resistant valves and pipe fittings.
• Power Machinery: High-end diesel and gas engine high-temperature load-bearing components, turbocharger structural parts, high-temperature sealing components.
• General High-end Industrial: Precision high-temperature molds, heat treatment fixtures, high-temperature instrument accessories, corrosion-resistant structural parts for marine engineering, high-end precision high-temperature mechanical components.

Frequently Asked Questions (FAQ)

• What is the optimal long-term service temperature for Inconel 718 alloy?

  A: The optimal long-term service temperature for Inconel 718 alloy is ≤650°C.

• Q: How is the welding performance of Inconel 718 alloy?

  A: Inconel 718 alloy exhibits excellent welding stability, is less prone to welding cracks, and its mechanical properties can be fully restored after standard aging heat treatment.

• A: Where is Inconel 718 alloy widely used?

  A: Inconel 718 alloy is widely used in aerospace, nuclear power, petrochemicals, power machinery, and general high-end industries.