UNS S32654 Stainless Steel

Equivalent Grades: UNS S32654 (Alloy 654), EN 1.4652, ASTM UNS S32654, X1CrNiMoCuN24-22-8, 654 SMO

UNS S32654 (1.4652, 654SMO) is a type of special stainless steel containing a high percentage of Nickel and Chromium, containing 7% molybdenum, and very high Nitrogen, High mechanical strength. 654SMO (1.4652, UNS S32654) is stainless steel with the highest corrosion resistance in the world. It has a fairly high electrical conductivity among wrought super austenitic stainless steel. In addition, it has a fairly low thermal conductivity and moderately high ductility.

Useful for e.g. pressurized and erosive systems handling chlorinated seawater at higher temperatures, plate heat exchangers, and flue gas cleaning applications.

UNS S32654 Chemical Composition:

Cr Ni Mo Cu Mn PREN UNS S32654
0.02 0.45-0.55 24.0-26.0 21.0-23.0 7.0-8.0 0.30-0.60 2.0-4.0 54 654 SMO


Typical applications

Pressurized and erosive systems handling chlorinated seawater at higher temperatures

Plate heat exchangers

Flue gas cleaning

Process equipment in the chemical industry

Bleaching equipment in the pulp and paper industry



Food and beverage