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UNS N09925 Special Fastener
QS Fastener: UNS N09925 Special Fastener
Name: UNS N09925 Special Fastener
Standard: ANSI
Material: Incoloy 925
Size: 5/16 to 4 inch
Product Grade: A
Length: 30 to 1000 mm
Strength of Extension: 650 N/mm²
Feature: Good Mechanical Strength and Extensive Corrosion Resistance
Application: For Oil and Gas Drilling Equipment
Standard: ANSI
Material: Incoloy 925
Size: 5/16 to 4 inch
Product Grade: A
Length: 30 to 1000 mm
Strength of Extension: 650 N/mm²
Feature: Good Mechanical Strength and Extensive Corrosion Resistance
Application: For Oil and Gas Drilling Equipment
Quantity
UNS N09925 Special Fastener is manufactured from high-performance Incoloy 925 alloy, compliant with ANSI international standards. The product is Grade A, with a size range from 5/16 to 4 inches, and lengths customizable from 30 mm to 1000 mm as per requirements. It boasts a tensile strength of up to 650 N/mm². Renowned for its exceptional mechanical strength and broad corrosion resistance, this product is particularly suitable for extreme operating environments such as oil and gas drilling equipment. Whether in high-temperature, high-pressure, or corrosive media conditions, UNS N09925 Special Fastener demonstrates outstanding stability and durability, ensuring long-term reliable operation of equipment in complex conditions.
UNS N09925 Special Fastener is known for its excellent corrosion resistance, high-temperature performance, and fatigue resistance, delivering an exceptionally long service life in extreme environments, often exceeding 15 years. Its long-life characteristics not only ensure the safety and reliability of equipment but also significantly reduce maintenance costs and downtime.
1. Material Properties and Long-Life Mechanism
The long service life of UNS N09925 Special Fastener is primarily attributed to its unique chemical composition and microstructure:
High Nickel Content (40-45%): Provides excellent corrosion resistance and high-temperature stability.
Chromium Content (19.5-23.5%): Forms a dense chromium oxide protective layer to resist oxidation and corrosion.
Molybdenum Content (2.5-3.5%): Enhances resistance to pitting and crevice corrosion.
Titanium Content (1.9-2.4%): Improves resistance to intergranular corrosion through stabilization treatment.
The long service life of UNS N09925 Special Fastener is primarily attributed to its unique chemical composition and microstructure:
High Nickel Content (40-45%): Provides excellent corrosion resistance and high-temperature stability.
Chromium Content (19.5-23.5%): Forms a dense chromium oxide protective layer to resist oxidation and corrosion.
Molybdenum Content (2.5-3.5%): Enhances resistance to pitting and crevice corrosion.
Titanium Content (1.9-2.4%): Improves resistance to intergranular corrosion through stabilization treatment.
The synergistic effect of these elements enables UNS N09925 Special Fastener to maintain stable performance in extreme environments, extending its service life.
2. Adaptability to Extreme Environments
UNS N09925 Special Fastener excels in the following extreme environments:
High-Temperature Environments: Can be used long-term at temperatures ranging from 600°C to 800°C, with excellent oxidation and creep resistance.
UNS N09925 Special Fastener excels in the following extreme environments:
High-Temperature Environments: Can be used long-term at temperatures ranging from 600°C to 800°C, with excellent oxidation and creep resistance.
Corrosive Environments: Demonstrates superior corrosion resistance in acidic, alkaline, and hydrogen sulfide-containing media.
High-Stress Environments: Exhibits excellent fatigue resistance under high stress and alternating loads.
High-Stress Environments: Exhibits excellent fatigue resistance under high stress and alternating loads.
3. Service Life Data
Below are the service life data of UNS N09925 Special Fastener in different extreme environments:
Gas Turbines: Exceeds 15 years in high-temperature (700°C) and high-stress environments.
Below are the service life data of UNS N09925 Special Fastener in different extreme environments:
Gas Turbines: Exceeds 15 years in high-temperature (700°C) and high-stress environments.
Petrochemical Industry: Exceeds 15 years in high-temperature (600°C) environments with hydrogen sulfide and acidic media.
Marine Engineering: Exceeds 20 years in high-humidity and chloride-containing environments.
Marine Engineering: Exceeds 20 years in high-humidity and chloride-containing environments.
4. Fatigue Resistance
UNS N09925 Special Fastener demonstrates excellent fatigue resistance under high stress and alternating loads. Below are its fatigue life data:
300 MPa: Fatigue life exceeds 10⁷ cycles, showcasing superior fatigue resistance.
500 MPa: Fatigue life exceeds 10⁵ cycles, suitable for high-stress environments.
UNS N09925 Special Fastener demonstrates excellent fatigue resistance under high stress and alternating loads. Below are its fatigue life data:
300 MPa: Fatigue life exceeds 10⁷ cycles, showcasing superior fatigue resistance.
500 MPa: Fatigue life exceeds 10⁵ cycles, suitable for high-stress environments.
5. Economic Analysis
The long-life characteristics of UNS N09925 Special Fastener significantly reduce maintenance costs and downtime. Below is its economic analysis:
The long-life characteristics of UNS N09925 Special Fastener significantly reduce maintenance costs and downtime. Below is its economic analysis:
| Item | Traditional Material (e.g., 304 Stainless Steel) | UNS N09925 Special Fastener |
| Service Life (Years) | 5-8 | >15 |
| Maintenance Frequency | Every 2-3 years | >15 |
| Maintenance Cost (USD/Year) | 10,000 | 2,000 |
| Downtime (Days/Year) | 15 | 3 |
Maintenance Cost: The maintenance cost of UNS N09925 Special Fastener is only 20% of that of traditional materials.
Downtime: The downtime of UNS N09925 Special Fastener is only 20% of that of traditional materials.
Downtime: The downtime of UNS N09925 Special Fastener is only 20% of that of traditional materials.
6. Comparison with Competing Materials
| Performance Indicator | UNS N09925 Special Fastener | Inconel 718 | Hastelloy X | 304 Stainless Steel |
| Service Life (Gas Turbines) | > 15 years | > 10 years | > 8 years | 5-8 years |
| Maintenance Cost (USD/Year) | 2,000 | 3,000 | 4,000 | 10,000 |
| Fatigue Resistance (300 MPa) | > 10⁷ cycles | > 10⁶ cycles | > 10⁵ cycles | > 10⁴ cycles |
UNS N09925 Special Fastener, with its excellent corrosion resistance, high-temperature performance, and fatigue resistance, delivers an exceptionally long service life in extreme environments, often exceeding 15 years. Its long-life characteristics not only ensure the safety and reliability of equipment but also significantly reduce maintenance costs and downtime. For further information on the long-life performance of UNS N09925 Special Fastener or customized design inquiries, please contact our technical support team.
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