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Inconel 718 Nut
QS Fastener: Inconel 718 Nut
Name: Inconel 718 Nut
Material: UNS N07718, W.Nr.2.4668
Product Grade: A
Size: M5 to M100
Standard: ANSI, DIN, BSW, NF
Height: 5.6 to 60 mm
Feature: Excellent Creep and Stress Rupture Strength, Workability, High Oxidation Resistance
Application: Gas Engine Turbines, Widely Used in a Variety of High-demand Occasions
Material: UNS N07718, W.Nr.2.4668
Product Grade: A
Size: M5 to M100
Standard: ANSI, DIN, BSW, NF
Height: 5.6 to 60 mm
Feature: Excellent Creep and Stress Rupture Strength, Workability, High Oxidation Resistance
Application: Gas Engine Turbines, Widely Used in a Variety of High-demand Occasions
Quantity
The Inconel 718 Nut is manufactured from UNS N07718 (W.Nr.2.4668) material, offering exceptional creep resistance, stress rupture strength, and high oxidation resistance, making it specifically designed for extreme environments. With sizes ranging from M5 to M100 and heights from 5.6 to 60 mm, it is available in standards such as ANSI, DIN, BSW, and NF. Its excellent machinability and durability make it an ideal choice for gas turbines and other high-load applications. Whether in high-temperature, high-pressure, or corrosive environments, the Inconel 718 Nut ensures long-term stable operation of equipment, meeting stringent industrial requirements.
Inconel 718 is a nickel-based high-temperature alloy widely used in aerospace, energy, and chemical industries due to its outstanding fatigue resistance. The Inconel 718 Nut is specifically designed based on this material, demonstrating significant advantages under cyclic loading and complex stress environments, providing reliable connection solutions for high-load applications.
1. Room Temperature Fatigue Performance
At room temperature, the fatigue limit of the Inconel 718 Nut is typically 40%-50% of its tensile strength. Specific data are as follows:
Tensile strength: Approximately 1275 MPa
Fatigue limit: 510-638 MPa (based on 40%-50% of tensile strength)
Fatigue life: At a stress amplitude of 500 MPa, the fatigue life can exceed 10⁷ cycles
At room temperature, the fatigue limit of the Inconel 718 Nut is typically 40%-50% of its tensile strength. Specific data are as follows:
Tensile strength: Approximately 1275 MPa
Fatigue limit: 510-638 MPa (based on 40%-50% of tensile strength)
Fatigue life: At a stress amplitude of 500 MPa, the fatigue life can exceed 10⁷ cycles
The Inconel 718 Nut exhibits excellent fatigue resistance at room temperature, ensuring long-term stable operation of equipment under cyclic loading.
2. High-Temperature Fatigue Performance
In high-temperature environments, Inconel 718 maintains high fatigue strength, with the following performance:
Fatigue limit at 650°C: Approximately 70%-80% of the room temperature fatigue limit, i.e., 357-510 MPa
Fatigue life: At a stress amplitude of 400 MPa, the fatigue life can exceed 10⁶ cycles.
In high-temperature environments, Inconel 718 maintains high fatigue strength, with the following performance:
Fatigue limit at 650°C: Approximately 70%-80% of the room temperature fatigue limit, i.e., 357-510 MPa
Fatigue life: At a stress amplitude of 400 MPa, the fatigue life can exceed 10⁶ cycles.
The Inconel 718 Nut performs exceptionally well in high-temperature environments, making it suitable for applications such as gas turbines.
3. Fatigue Performance Testing Methods
The fatigue performance of the Inconel 718 Nut is typically evaluated through the following testing methods:
Rotating bending fatigue test: Used to determine the room temperature fatigue limit.
Axial fatigue test: Used to assess high-temperature fatigue performance.
Crack growth rate test: Used to analyze fatigue crack propagation behavior.
The fatigue performance of the Inconel 718 Nut is typically evaluated through the following testing methods:
Rotating bending fatigue test: Used to determine the room temperature fatigue limit.
Axial fatigue test: Used to assess high-temperature fatigue performance.
Crack growth rate test: Used to analyze fatigue crack propagation behavior.
Testing standards:
ASTM E466: Standard for axial fatigue testing of metallic materials.
ASTM E466: Standard for axial fatigue testing of metallic materials.
ASTM E647: Standard for fatigue crack growth rate testing.
The Inconel 718 Nut validates its fatigue performance through these testing methods, ensuring reliability in high-load applications.
4. Application Examples
Aerospace: Used in engine turbine disks, blades, and fasteners, withstanding high cyclic loads and high-temperature environments.
Aerospace: Used in engine turbine disks, blades, and fasteners, withstanding high cyclic loads and high-temperature environments.
Energy industry: Used in gas turbine components and nuclear reactor components, ensuring long-term stable operation.
Chemical equipment: Used in high-pressure vessels and pipelines, tolerating cyclic stress and corrosive environments.
The Inconel 718 Nut excels in these application scenarios, providing reliable connection solutions for equipment.
5. Summary
The Inconel 718 Nut demonstrates excellent fatigue resistance at both room temperature and high temperatures, with its fatigue limit being 40%-50% of the tensile strength at room temperature and maintaining a high level at elevated temperatures. Through optimized heat treatment, surface treatment, and alloy design, the Inconel 718 Nut further enhances its fatigue resistance, meeting the high-reliability requirements of extreme environments.
The Inconel 718 Nut demonstrates excellent fatigue resistance at both room temperature and high temperatures, with its fatigue limit being 40%-50% of the tensile strength at room temperature and maintaining a high level at elevated temperatures. Through optimized heat treatment, surface treatment, and alloy design, the Inconel 718 Nut further enhances its fatigue resistance, meeting the high-reliability requirements of extreme environments.
When selecting fasteners for demanding applications, the Inconel 718 Nut is a reliable choice, offering exceptional performance under the most challenging conditions.
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