Energy Metals Inc.

Distributors of Specialty Stainless Steel and High Grade Nickel Alloys.

254 SMO®

Description

254 SMO® is an austenitic steel designed for maximum resistance to pitting and crevice corrosion. With high levels of chromium, molybdenum and nitrogen, 254 SMO® is especially suited for high chloride environments such as brackish water, seawater, pulp mill bleach plants and other high-chloride process streams. In new construction, 254 SMO® has been found in many cases to be technically adequate and much less costly substitute for nickel-based alloys and titanium. 254 SMO® is readily fabricated and welded.

Forms in Stock

  • Pipe
  • Fittings
  • Flanges

Specifications

UNS S31254

Welded Pipe     ASTM A312 / ASME SA312
Smls Pipe     ASTM A312 / ASME SA312
B/W Fittings     ASTM A403 / ASME SA403
Flanges     ASTM A182 F44 / ASME SA182 F44

Limiting Chemical Composition, %

C MAX 0.02 Mo 6.0 - 6.5 Si MAX 0.80
Cr 19.5 - 20.5 N 0.18 - 0.22 S MAX 0.010
Cu 0.5 - 1.0 Ni 17.5 - 18.5    
Mn MAX 1.0 P MAX 0.03