Phosphoric acid production

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

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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