ASME SB111 C68700 Arsenical Aluminum Brass U Bend Seamless Tube With Impingement Attack

2. Key Advantages

• Aluminum forms a dense protective film of aluminum oxide on the surface, which can resist the erosion of seawater and brackish water for a long time.
• It is particularly suitable for high-flow-rate cooling water environments, and can effectively avoid pipe wall thinning or perforation caused by high-speed fluid impact.
• Adding trace amounts of arsenic (As) inhibits the selective dissolution of zinc in brass, preventing the formation of a loose copper skeleton and the risk of leakage.
• With a thermal conductivity of approximately 100–121 W/(m·K), significantly higher than that of stainless steel, it can effectively improve the heat exchange efficiency of heat exchangers.
• Suitable for alternating temperature or pressure conditions, reducing the risk of cracking failure during long-term operation.
• It outperforms ordinary brass, and its corrosion resistance life is close to that of higher-cost copper-nickel alloys or stainless steel, but its price is much lower.

• Shipbuilding and Marine Engineering: Used in seawater cooling systems, condensers, and heat exchangers.
• Thermal and Nuclear Power Generation: Used in heat exchange equipment such as water heaters and oil coolers in coastal power plants.
• Seawater Desalination: Widely used in multi-stage flash evaporation, reverse osmosis, and other seawater desalination equipment.
• Petrochemical Industry: Used in process pipelines for treating salty or other corrosive media.