Recommend Products
Name: Fujian Monel 400 Double End Stud Material: Monel 400 Standard: ASME B18.2.1 Size: 5/16 to 4 inch Length: 30 to 1000 mm Class: 12.9 Feature: Resistant to hydrofluoric acidQS Fastener: Monel 400 Double End Stud
Name: Inconel 625 Double End Stud Material: Inconel 625 Standard: ASME B18.2.1 Size: 5/16 to 4 inch Length: 30 to 1000 mm Class: 12.9 Feature: High Yield Strength, Durable Strength and Corrosion ResistanceQS Fastener: Inconel 625 Double End Stud
Name: Xiamen Inconel 600 High Strength Fastener Material: Inconel 600 Standard: ASME Size: 5/16 to 4 inch Length: 30 to 1000 mm Class: 12.9 Feature: High Yield Strength, Durable Strength and Corrosion ResistanceQS Fastener: Inconel 600 High Strength Fastener
Name: Inconel 600 Stud Bolt Putian Material: Inconel 600 Standard: ASME B18.2.1 Size: 5/16 to 4 inch Length: 30 to 1000 mm Class: 12.9 Feature: High Yield Strength, Durable Strength and Corrosion ResistanceQS Fastener: Inconel 600 Stud Bolt
UNS N07718 Nut
QS Fastener: UNS N07718 Nut
Name: UNS N07718 Nut
Material: W.Nr.2.4668, NiCr19Fe19Nb5Mo3
Product Grade: A
Size: M36
Height: 5.6 to 60 mm
Standard: ANSI, DIN, BSW, NF
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: W.Nr.2.4668, NiCr19Fe19Nb5Mo3
Product Grade: A
Size: M36
Height: 5.6 to 60 mm
Standard: ANSI, DIN, BSW, NF
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 UNS N07718 Nut is manufactured from W.Nr.2.4668 (NiCr19Fe19Nb5Mo3) material, offering exceptional creep resistance, stress rupture strength, and high oxidation resistance, making it suitable for extreme working environments. With heights ranging from 5.6 to 60 mm, it is available in standards such as ANSI, DIN, BSW, and NF, and can be customized. Its excellent machinability and durability make it an ideal choice for high-performance fasteners, ensuring long-term stable operation of equipment.
Inconel 718 is a nickel-based high-temperature alloy known for its outstanding corrosion resistance in both oxidizing and reducing environments, particularly in acidic, alkaline, and chloride-rich conditions, thanks to its high nickel, chromium, and molybdenum content. The UNS N07718 Nut is specifically designed based on this material and is widely used in industries such as chemical processing, marine engineering, and nuclear power, providing reliable connection solutions for these sectors.
1. Corrosion Resistance Performance
The UNS N07718 Nut performs exceptionally well in typical corrosive environments, as follows:
The UNS N07718 Nut performs exceptionally well in typical corrosive environments, as follows:
Acidic Environments:
Sulfuric acid (10%, 50°C): Corrosion rate ≤0.01 mm/year
Hydrochloric acid (5%, 30°C): Corrosion rate ≤0.02 mm/year
Nitric acid (50%, 50°C): Corrosion rate ≤0.005 mm/year
Sulfuric acid (10%, 50°C): Corrosion rate ≤0.01 mm/year
Hydrochloric acid (5%, 30°C): Corrosion rate ≤0.02 mm/year
Nitric acid (50%, 50°C): Corrosion rate ≤0.005 mm/year
Alkaline Environments:
Sodium hydroxide (20%, 50°C): Corrosion rate ≤0.01 mm/year
Sodium hydroxide (20%, 50°C): Corrosion rate ≤0.01 mm/year
Chloride Environments:
Seawater (3.5% NaCl, 30°C): Corrosion rate ≤0.001 mm/year
Salt spray (ASTM B117, 1000 hours): No visible signs of corrosion
Seawater (3.5% NaCl, 30°C): Corrosion rate ≤0.001 mm/year
Salt spray (ASTM B117, 1000 hours): No visible signs of corrosion
The UNS N07718 Nut excels in these corrosive environments, ensuring the long-term stable operation of equipment under extreme conditions.
2. Corrosion Resistance Mechanisms
The corrosion resistance of the UNS N07718 Nut is primarily attributed to the following mechanisms:
Protective Oxide Film: Chromium and nickel form a dense Cr₂O₃ and NiO oxide film, effectively preventing the penetration of corrosive media.
Alloying Elements: Molybdenum enhances corrosion resistance in reducing acids, while niobium inhibits intergranular corrosion.
The corrosion resistance of the UNS N07718 Nut is primarily attributed to the following mechanisms:
Protective Oxide Film: Chromium and nickel form a dense Cr₂O₃ and NiO oxide film, effectively preventing the penetration of corrosive media.
Alloying Elements: Molybdenum enhances corrosion resistance in reducing acids, while niobium inhibits intergranular corrosion.
Microstructure: The uniform fine-grain structure and grain boundary strengthening mechanisms reduce the risk of localized corrosion.
Through these mechanisms, the UNS N07718 Nut demonstrates exceptional corrosion resistance in corrosive environments.
3. Performance in Special Corrosive Environments
Stress Corrosion Cracking (SCC): The UNS N07718 Nut exhibits excellent resistance to stress corrosion cracking in high-temperature chloride and alkaline environments.
Stress Corrosion Cracking (SCC): The UNS N07718 Nut exhibits excellent resistance to stress corrosion cracking in high-temperature chloride and alkaline environments.
Pitting and Crevice Corrosion: In 3.5% NaCl solution, the pitting potential is ≥0.8 V (SCE), and the crevice corrosion rate is significantly lower than that of other alloys.
The UNS N07718 Nut performs exceptionally well in these special corrosive environments, ensuring reliability in complex operating conditions.
4. Application Examples
Chemical Industry: Used in reactors, heat exchangers, and pipelines, withstanding strong acids, alkalis, and chloride environments.
Chemical Industry: Used in reactors, heat exchangers, and pipelines, withstanding strong acids, alkalis, and chloride environments.
Marine Engineering: Used in pumps, valves, and pipelines, ensuring long-term stable operation in seawater and salt spray environments.
Nuclear Industry: Used in nuclear reactor components, ensuring safety and reliability in high-temperature, high-pressure, and corrosive media environments.
The UNS N07718 Nut excels in these application scenarios, providing reliable connection solutions for equipment.
5. Summary
The UNS N07718 Nut demonstrates outstanding corrosion resistance in various corrosive environments, with its high nickel, chromium, and molybdenum content and stable oxide film formation being key factors. Through optimized chemical composition and processing techniques, the UNS N07718 Nut further enhances its corrosion resistance, meeting the high-reliability requirements of extreme environments.
The UNS N07718 Nut demonstrates outstanding corrosion resistance in various corrosive environments, with its high nickel, chromium, and molybdenum content and stable oxide film formation being key factors. Through optimized chemical composition and processing techniques, the UNS N07718 Nut further enhances its corrosion resistance, meeting the high-reliability requirements of extreme environments.
When selecting fasteners, the UNS N07718 Nut is undoubtedly a trustworthy choice. Its high-performance materials and optimized design enable it to excel in various extreme conditions, meeting the most stringent engineering needs.
Send Message
