We offer tubes in Sanicro® 28, a high-alloy austenitic stainless steel particularly suited for use in phosphoric acid production.

Phosphate rock contains many impurities, such as chlorides and fluorides, which make phosphoric acid very corrosive to metals. The highly corrosion-resistant tube grade Sanicro® 28 is specially developed to replace graphite tubes in heat exchangers for concentrated phosphoric acid. With proper heat exchanger design, tubes in Sanicro® 28 outperform graphite tubes by several years.

Sanicro® 28 characteristics:

  • Very high corrosion resistance in strong acids
  • Very good resistance to stress corrosion cracking (SCC) and intergranular corrosion in various environments
  • High resistance to pitting and crevice corrosion
  • Good weldability

Read more about Sanicro® 28

Material datasheet for Sanicro® 28 seamless tube and pipe

View corrosion data for phosphoric acid

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