UNI 11358:2026 – New standard for testing enameled water heaters

UNI published on June 18th 2026, UNI 11358 “Porcelain enamels for water heaters, boilers and storage tanks – Determination of resistance to hot water corrosion”

This standard replace UNI/TR 11358:2010 and specifies a test method for determining the resistance of porcelain enamel to hot water attack in the liquid phase through the analysis of weight loss, reflecting the real conditions of use of the products.

Author

  • Ronald Ditmer is the founder and managing director of Ditmer Trading & Consulting B.V.

    Involved in the porcelain enameling industry since 1984 and specialized in setting-up complete enameling plants, designing enameling equipment and troubleshooting enameling processes & equipment.

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