Alloy 1.4539: High-performance austenitic stainless steel alloy
Alloy 1.4539 is a high-performance austenitic stainless steel alloy used in various applications due to its high strength and corrosion resistance. It is also known as UNS N08904.
Chemical composition
- Chromium: 19.0-21.0%
- Nickel: 24.0-26.0%
- Molybdenum: 4.5-5.0%
- Copper: 1.5-2.0%
- Nitrogen: 0.15-0.25%
- Carbon: 0.02% (max)
- Manganese: 2.0% (max)
- Phosphorus: 0.045% (max)
- Sulfur: 0.03% (max)
- Silicon: 1.0% (max)
Characteristics
- Excellent corrosion resistance: Alloy 1.4539 offers excellent resistance to corrosive media such as sulfuric acid, nitric acid, and phosphoric acid. It is also resistant to pitting corrosion and stress corrosion cracking.
- High strength: This alloy has high strength, making it suitable for use in demanding applications such as offshore platforms and marine engineering.
- Good weldability: The alloy 1.4539 is easy to weld and can be treated after welding without affecting corrosion resistance and strength.
- Good machinability: This alloy is easy to machine and, due to its good mechanical properties, can be easily shaped and drilled.
Applications
The alloy 1.4539 is used in various applications, including:
- Chemical processing plants
- Marine technology
- Offshore platforms
- Pharmaceutical facilities
- Food processing plants
- Paper and pulp industry
Heat treatment
The alloy 1.4539 is not normally heat-treated because it already has high strength and corrosion resistance.
Delivery forms
The alloy 1.4539 is available in various forms, including sheets, bars, tubes and forgings.
Note: The data above is for reference only and may vary depending on the manufacturer and production batch. Always consult the manufacturer's specifications and datasheets before use.
