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Nimonic 80A Thread Rod
QS Fastener: Nimonic 80A Thread Rod
Name: Nimonic 80A Thread Rod
Product Grade: A
Size: 5/16 to 4 inch
Length: 30 to 1000 mm
Standard: ANSI/ASTM
Material: N07080
Tensile Strength(Rm): 930 N/mm²
Elongation: 20%
Feature: High Temperature Strength and Stability, Good Corrosion Resistance
Application: For Aerospace field, Automobile Industry, Energy Field, Chemical industry.
Product Grade: A
Size: 5/16 to 4 inch
Length: 30 to 1000 mm
Standard: ANSI/ASTM
Material: N07080
Tensile Strength(Rm): 930 N/mm²
Elongation: 20%
Feature: High Temperature Strength and Stability, Good Corrosion Resistance
Application: For Aerospace field, Automobile Industry, Energy Field, Chemical industry.
Quantity
The Nimonic 80A Thread Rod is a high-performance fastener manufactured from premium N07080 material, compliant with ANSI/ASTM standards, and designed for demanding high-temperature and corrosive environments. Its specifications cover sizes from 5/16 to 4 inches and lengths ranging from 30 to 1000 mm, meeting diverse application needs.
Its core advantages lie in its exceptional high-temperature strength and stability, with a tensile strength of up to 930 N/mm² and an elongation rate of 20%, ensuring superior mechanical performance even under extreme conditions. Additionally, the Nimonic 80A Thread Rod offers excellent corrosion resistance, capable of withstanding the erosion of various chemical media.
The Nimonic 80A Thread Rod is a nickel-based high-temperature alloy fastener, and its oxidation resistance is one of the key characteristics that make it stand out in high-performance applications.
1. Oxidation Mechanism and Oxide Film Formation
In high-temperature oxidation environments, the oxidation resistance of the Nimonic 80A Thread Rod primarily relies on its alloy composition and microstructure:
- Role of Chromium (Cr): The Nimonic 80A Thread Rod contains 19-22% chromium, which reacts with oxygen at high temperatures to form Cr₂O₃ (chromium oxide), a dense and stable oxide film that effectively prevents further oxygen diffusion.
- Role of Aluminum (Al) and Titanium (Ti): Aluminum and titanium form Al₂O₃ (aluminum oxide) and TiO₂ (titanium dioxide) at high temperatures. These oxides, together with Cr₂O₃, create a multi-layered composite oxide film, further enhancing oxidation resistance.
- Role of Nickel (Ni) Matrix: The nickel matrix provides excellent high-temperature stability, ensuring the oxide film does not easily peel or crack at high temperatures.
In high-temperature oxidation environments, the oxidation resistance of the Nimonic 80A Thread Rod primarily relies on its alloy composition and microstructure:
- Role of Chromium (Cr): The Nimonic 80A Thread Rod contains 19-22% chromium, which reacts with oxygen at high temperatures to form Cr₂O₃ (chromium oxide), a dense and stable oxide film that effectively prevents further oxygen diffusion.
- Role of Aluminum (Al) and Titanium (Ti): Aluminum and titanium form Al₂O₃ (aluminum oxide) and TiO₂ (titanium dioxide) at high temperatures. These oxides, together with Cr₂O₃, create a multi-layered composite oxide film, further enhancing oxidation resistance.
- Role of Nickel (Ni) Matrix: The nickel matrix provides excellent high-temperature stability, ensuring the oxide film does not easily peel or crack at high temperatures.
The oxide film formation process is as follows:
1. At high temperatures (>600°C), chromium, aluminum, and titanium on the alloy surface react with oxygen to form an initial oxide layer.
1. At high temperatures (>600°C), chromium, aluminum, and titanium on the alloy surface react with oxygen to form an initial oxide layer.
2. Over time, the oxide layer gradually thickens, forming a dense protective film.
3. The growth rate of the oxide film slows down, eventually reaching a dynamic equilibrium that effectively prevents further oxidation.
2. Experimental Data and Performance
The oxidation resistance of the Nimonic 80A Thread Rod has been validated through numerous experiments. Key data include:
- Oxidation Rate: In air at 800°C, the oxidation rate of the Nimonic 80A Thread Rod is approximately 0.01-0.02 mg/cm²·h, significantly lower than that of ordinary stainless steel and low-alloy steel.
- Oxide Film Thickness: After 1000 hours of exposure at 800°C, the oxide film thickness is about 2-3 micrometers, demonstrating excellent stability.
- Critical Temperature: The oxidation resistance of the Nimonic 80A Thread Rod performs best below 800°C. Beyond this temperature, the oxidation rate increases slightly but remains superior to most high-temperature alloys.
The oxidation resistance of the Nimonic 80A Thread Rod has been validated through numerous experiments. Key data include:
- Oxidation Rate: In air at 800°C, the oxidation rate of the Nimonic 80A Thread Rod is approximately 0.01-0.02 mg/cm²·h, significantly lower than that of ordinary stainless steel and low-alloy steel.
- Oxide Film Thickness: After 1000 hours of exposure at 800°C, the oxide film thickness is about 2-3 micrometers, demonstrating excellent stability.
- Critical Temperature: The oxidation resistance of the Nimonic 80A Thread Rod performs best below 800°C. Beyond this temperature, the oxidation rate increases slightly but remains superior to most high-temperature alloys.
3. Performance in Practical Applications
The oxidation resistance of the Nimonic 80A Thread Rod makes it excel in the following applications:
- Aerospace: In gas turbine combustion chambers and turbine blades, the Nimonic 80A Thread Rod can operate stably for extended periods in high-temperature oxidation environments, significantly extending component lifespan.
- Energy Industry: In gas turbines and nuclear power plant equipment, the oxidation resistance of the Nimonic 80A Thread Rod reduces maintenance frequency and downtime.
- Chemical Industry: In high-temperature reactors and pipelines, the Nimonic 80A Thread Rod resists oxidation and corrosion, ensuring safe equipment operation.
The oxidation resistance of the Nimonic 80A Thread Rod makes it excel in the following applications:
- Aerospace: In gas turbine combustion chambers and turbine blades, the Nimonic 80A Thread Rod can operate stably for extended periods in high-temperature oxidation environments, significantly extending component lifespan.
- Energy Industry: In gas turbines and nuclear power plant equipment, the oxidation resistance of the Nimonic 80A Thread Rod reduces maintenance frequency and downtime.
- Chemical Industry: In high-temperature reactors and pipelines, the Nimonic 80A Thread Rod resists oxidation and corrosion, ensuring safe equipment operation.
4. Factors Affecting Oxidation Resistance
Although the Nimonic 80A Thread Rod exhibits excellent oxidation resistance, its performance is still influenced by the following factors:
- Temperature: Above 800°C, the oxidation rate gradually increases, though it remains superior to most high-temperature alloys.
- Environmental Atmosphere: In sulfur- or chlorine-containing environments, the oxide film may be damaged, leading to reduced oxidation resistance.
- Surface Condition: Surface roughness and machining defects can affect the uniformity and density of the oxide film.
Although the Nimonic 80A Thread Rod exhibits excellent oxidation resistance, its performance is still influenced by the following factors:
- Temperature: Above 800°C, the oxidation rate gradually increases, though it remains superior to most high-temperature alloys.
- Environmental Atmosphere: In sulfur- or chlorine-containing environments, the oxide film may be damaged, leading to reduced oxidation resistance.
- Surface Condition: Surface roughness and machining defects can affect the uniformity and density of the oxide film.
5. Summary
The oxidation resistance of the Nimonic 80A Thread Rod is an indispensable characteristic in high-performance applications. Through the synergistic effects of chromium, aluminum, and titanium, a dense oxide film forms on its surface, effectively preventing high-temperature oxidation and ensuring long-term stability and reliability in extreme environments. Both experimental data and practical applications demonstrate that the Nimonic 80A Thread Rod performs exceptionally well in high-temperature oxidation environments, making it an ideal choice for aerospace, energy, and chemical industries.
The oxidation resistance of the Nimonic 80A Thread Rod is an indispensable characteristic in high-performance applications. Through the synergistic effects of chromium, aluminum, and titanium, a dense oxide film forms on its surface, effectively preventing high-temperature oxidation and ensuring long-term stability and reliability in extreme environments. Both experimental data and practical applications demonstrate that the Nimonic 80A Thread Rod performs exceptionally well in high-temperature oxidation environments, making it an ideal choice for aerospace, energy, and chemical industries.
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