Alleima has introduced Sanicro® 35, a super austenitic alloy that bridges the gap between conventional stainless steels and higher-cost nickel alloys.

This material is designed for use in extremely corrosive environments, including seawater applications, making it an ideal choice for heat exchangers.

Sanicro 35 combines superior corrosion resistance, high mechanical yield strength, and excellent structural stability, setting a new standard in material performance.

Phosphoric acid plants have long relied on graphite heat exchangers to handle the highly corrosive nature of the concentration process. However, graphite's brittleness often leads to frequent tube fractures, unplanned maintenance stops, and costly replacements every three to four years.

Metalic heat exchangers present a viable alternative, offering more affordability, less prone to cracking, and typically lasting at least twice as long.

Sanicro 35 has been successfully replaced by one customer after extensive research, trials, and collaboration with clients on optimal welding techniques. In the ethylene oxide production industry, corrosion is a pressing concern, particularly for recycled column condensers that utilise seawater.