254 SMO

Atlanta Rod manufactures 254 SMO Stainless bolts, studs, and nuts to your custom specifications, and we guarantee to meet your delivery schedule. At Atlanta Rod and Manufacturing Co., Inc. we strive to provide our customers with the most innovative products and quality materials in the industry.

254 SMO is an austenitic stainless steel designed for superior pitting and crevice corrosion. 254 SMO is ideal for high-chloride environments because of its high levels of chromium, molybdenum, and nitrogen. 254 SMO is often used where 316L or 317L has failed. 254 SMO is significantly stronger than the common austenitic grades, and it is also characterized by high ductility and impact strength.

254 SMO is readily fabricated and welded. It is a strong, tough stainless steel. The ASME Boiler and Pressure Vessel Code allows use of 254 SMO up to 750°F, with excellent strength levels. Applications for 254 SMO include: process equipment in the chemical industry, bleaching equipment in the pulp and paper industry, flue gas cleaning, desalination, seawater handling, and heat exchangers.


Chemical Composition (%)

Carbon Chromium Nickel Molybdenum Nitrogen
0.020 max 19.5 -20.5 17.5 – 18.5 6.0 – 6.5 0.18 – 0.22
Copper Sulfur Phosphorus Silicon Manganese Iron
0.50 – 1.00 0.010 max 0.030 max 0.80 max 1.00 max Balance

Information from Outokumpu Stainless, Inc., owner of the 254 SMO registered trademark.