Al-6XN is a high-performance austenitic stainless steel that was developed in the 1980s by Allegheny Ludlum Corporation, which is now part of ATI (Allegheny Technologies Incorporated). It is a super austenitic alloy that exhibits exceptional resistance to corrosion, pitting, crevice corrosion, and stress corrosion cracking (SCC) in aggressive environments. This alloy is used in various applications that require excellent corrosion resistance, such as chemical processing, oil and gas production, marine engineering, pulp and paper, and pharmaceuticals.
Chemical Composition of Al-6XN
Al-6XN is an iron (Fe)-based alloy with a high content of nickel (Ni), chromium (Cr), and molybdenum (Mo). The chemical composition of Al-6XN is as follows:
- Iron (Fe): balance
- Nickel (Ni): 23.5%
- Chromium (Cr): 22%
- Molybdenum (Mo): 6.3%
- Nitrogen (N): 0.18%
- Copper (Cu): 0.75%
- Silicon (Si): 0.27%
- Manganese (Mn): 1.5%
- Carbon (C): 0.03%
Mechanical Properties of Al-6XN
Al-6XN has excellent mechanical properties, including high strength, ductility, and toughness. The following table shows the typical mechanical properties of Al-6XN at room temperature:
- Yield strength: 300 MPa (43.5 ksi)
- Tensile strength: 655 MPa (95 ksi)
- Elongation: 50%
- Hardness (Rockwell B): 90
Forms of Al-6XN
Al-6XN is available in various forms, including pipes, tubes, coiled tubes, sheets, coils, round bars, and plates. These forms are manufactured to meet the specific requirements of different applications.
- Pipes: Al-6XN pipes are available in sizes ranging from 1/8 inch to 12 inches in diameter and are commonly used in chemical processing, oil and gas, and marine engineering.
- Tubes: Al-6XN tubes are available in sizes ranging from 1/4 inch to 3 inches in diameter and are used in heat exchangers, condensers, and other applications that require corrosion resistance.
- Coiled Tubes: Al-6XN coiled tubes are available in sizes ranging from 1/4 inch to 1 inch in diameter and are used in various applications where space is limited.
- Sheets: Al-6XN sheets are available in thicknesses ranging from 0.018 inch to 0.1875 inch and are used in chemical processing, pulp and paper, and pharmaceuticals.
- Coils: Al-6XN coils are available in various widths and thicknesses and are used in chemical processing and other applications that require corrosion resistance.
- Round Bars: Al-6XN round bars are available in sizes ranging from 1/4 inch to 8 inches in diameter and are used in marine engineering, chemical processing, and other applications.
- Plates: Al-6XN plates are available in thicknesses ranging from 0.25 inch to 2 inches and are used in chemical processing and other applications that require corrosion resistance.
Applications of Al-6XN
Al-6XN is used in a wide range of applications that require excellent corrosion resistance and high strength. Some of the most common applications of Al-6XN include:
- Chemical processing: Al-6XN is used in various chemical processing applications, such as acid leaching, chlorination systems, and sulfuric acid production.
- Oil and gas production: Al-6XN is used in offshore oil and gas production equipment, such as piping, valves, and fittings.
- Marine engineering: Al-6XN is used in seawater desalination, marine propellers, and other marine equipment.
- Pulp and paper: Al-6XN is used in pulp bleaching equipment, which requires resistance to chlorine and other bleaching agents.
- Pharmaceuticals: Al-6XN is used in pharmaceutical manufacturing equipment, which requires high purity and corrosion resistance.
Standard and ASTM Equivalent of Al-6XN
Al-6XN is available in compliance with various standards, including ASTM B690, ASTM A312, ASTM A269, ASTM A249, and NACE MR0175. Al-6XN is also equivalent to UNS N08367 and EN 1.4501.
ANTON METAL and Al-6XN
ANTON METAL is a leading supplier of Al-6XN pipes, tubes, sheets, coils, round bars, and plates. With more than 20 years of experience in the metal industry, ANTON METAL has developed expertise in sourcing and supplying high-quality stainless steel materials for a wide range of applications.
The Difference Between Al-6XN and 904L
Al-6XN and 904L are both super austenitic stainless steels that exhibit excellent corrosion resistance in harsh environments. However, there are some differences between these alloys that make them suitable for different applications.
- Chemical Composition: Al-6XN contains higher levels of nickel, chromium, and molybdenum than 904L, which gives it superior corrosion resistance and higher strength.
- Mechanical Properties: Al-6XN has higher yield and tensile strength than 904L, making it suitable for applications that require high strength and toughness.
- Applications: Al-6XN is commonly used in chemical processing, oil and gas production, marine engineering, pulp and paper, and pharmaceuticals, while 904L is often used in applications that require resistance to sulfuric acid, phosphoric acid, and other highly acidic environments.
Conclusion
Al-6XN is a super austenitic stainless steel that exhibits exceptional resistance to corrosion, pitting, crevice corrosion, and stress corrosion cracking in aggressive environments. It is available in various forms, including pipes, tubes, coiled tubes, sheets, coils, round bars, and plates, and is used in a wide range of applications that require high strength and corrosion resistance. ANTON METAL is a reliable supplier of Al-6XN and has built a strong reputation in the metal industry for its quality products and excellent customer service.
Post time: Jun-25-2023
