Product Introduction: Super Austenitic N08811 Alloy
The Super Austenitic N08811 alloy, designated as UNS N08811, represents a benchmark in high-performance stainless steel, boasting exceptional physical properties suitable for a range of applications. This alloy is particularly noted for its resilience under varying temperature conditions, specifically in the annealed state at temperatures from -20°F to +100°F.
1. Physical Properties
Super Austenitic N08811 exhibits remarkable tensile strength and yield strength, making it ideal for demanding environments. As per specifications B514 and B515, this alloy presents the following properties:
- Tensile Strength: 65,000 psi (450 MPa or 65 ksi)
- Yield Strength: 25,000 psi (170 MPa or 25 ksi)
- Minimum Elongation over 2 inches: 30%
- Grain Size Requirement: 5 or coarser
- Maximum Hardness: Not specified
- Modulus of Elasticity: 7.9 × 10^6 psi
- Mean Coefficient of Thermal Expansion: 80 × 10^-6 in/in/°F
- Thermal Conductivity: Not specified in detail
These characteristics reflect the alloy's robust nature, which contributes significantly to its ability to withstand mechanical stress and thermal variations.
2. Chemical Composition
Super Austenitic N08811’s unique mechanical properties stem from its carefully balanced chemical composition, which includes:
- Nickel (Ni): 30.0 – 35.0%
- Chromium (Cr): 19.0 – 23.0%
- Iron (Fe): Minimum 39.5%
- Titanium (Ti): Up to 0.15 – 0.60%
- Aluminum (Al): Up to 0.15 – 0.60%
- Copper (Cu): Maximum 0.75%
- Manganese (Mn): Maximum 1.5%
- Carbon (C): Maximum 0.06 – 0.10%
- Silicon (Si): Maximum 100 ppm
- Sulfur (S): Maximum 0.1015%
This composition is designed to enhance corrosion resistance while sustaining structural integrity across various temperature ranges and environments.
3. Industry Standards
The properties of Super Austenitic N08811 are governed by specific industry standards, ensuring quality and performance. Compliance with specifications such as B514 and B515 indicates adherence to rigorous testing and quality control processes. Industry standards typically emphasize requirements including:
- Tensile and mechanical strength validations: Essential for ensuring that materials will perform without failure under expected conditions.
- Composition analysis: Guarantees the alloy's resistance to corrosion and oxidation, crucial in industries such as chemical processing, oil and gas, and marine applications.
- Thermal properties evaluation: Critical for applications involving extreme temperatures, assisting in the design and engineering of components that require stability and reliability.
4. Applications
The unique characteristics of the N08811 alloy make it suitable for an array of applications, particularly in industries where corrosion resistance and mechanical strength are paramount. Typical applications include:
- Chemical processing equipment: N08811’s resistance to aggressive chemicals and high temperatures makes it an ideal choice for reactors, heat exchangers, and piping systems.
- Aerospace components: The alloy's excellent strength-to-weight ratio and performance at varied temperatures serve vital roles in aerospace engineering.
- Marine engineering: Its resistance to saltwater corrosion extends the life of components used in marine environments.
5. Conclusion
Super Austenitic N08811 alloy stands out as a high-performance material essential for modern engineering and manufacturing. Its impressive mechanical properties, combined with a well-defined chemical composition and adherence to stringent industry standards, make it a trusted choice for engineers and designers in industries requiring reliable performance and longevity. As the demand for sophisticated materials grows, N08811 will undoubtedly remain a key player in the landscape of austenitic alloys.
For further information on the specifications and applications of Super Austenitic N08811, please consult relevant industry guidelines or standards.
