254SMO/F44 (UNS S31254/W.Nr.1.4547) Tube, Pipe, Pipe Fittings, Flanges

Stainless Steel Tradename UNS no. Werkstoff No. Density (g/cm3) 254 SMO F44, 6% Moly Grade S31254 1.4547 8.0 g

Alloy 254 SMO, commonly known as UNS S31254 is a super austenitic stainless steel, containing higher proportions of chromium, molybdenum, and nitrogen, enabling high resistance to pitting and crevice corrosion. 254 SMO is also referred to as one of the most widely used 6% Moly grade piping products.

254 SMO is around 50% stronger than 300-series austenitic stainless steels and is mainly suitable for high-chloride environments, as it offers chloride resistance superior to that of Alloy 904L Alloy 20 and Alloy 825. It is also characterized by high ductility and impact strength.

wilsonpipeline Pipe Industry Co., Limited is a leading manufacturer and supplier of stainless steel alloy 254 SMO flanges, pipe, tube, pipe fittings, wire, forgings, flanges, and fasteners including; nuts, bolts, sockets, washers and more.

254 SMO flanges, pipes and tubing’s are widely supplied from stock to serve varied purposes including manufacture of process equipment for chemical industry, pulp and paper industry, gas cleaning systems, desalination, seawater handling, and manufacture of heat exchangers.

In many applications, alloy 254 SMO flanges, pipes, tubing and pipe fittings products have been found technically adequate and more cost effective compared to nickel based alloys and titanium grades.

6% Moly, 254 SMO (UNS S31254) Specifications

254 SMO Seamless Pipes and Tubes: ASTM A269, ASTM A312

254 SMO Seamless & Welded Tubing: ASTM A249, ASTM A269, ASTM A312, ASTM A358

254 SMO Fasteners – Bolts, Nuts: ASTM A193, ASTM A194

254 SMO Pipe Fittings, Forgings & Flanges:  ASTM A182, ASTM A403, ASTM A473

6% Moly, 254 SMO (UNS S31254) Chemical Composition, %

Cr Ni Mo C N 19.5-20.5 17.5-18.5 6.0 – 6.5 0.020 max. 0.18-0.22 Mn Si P S Cu 1.00 max. 0.80 max. 0.030 max. 0.010 max. 0.50-1.00

Chemical & Mechanical Properties of 6% Moly, 254 SMO (UNS S31254)

254SMO Stainless Steel Density (g/cm3) 8.0 Melting Range,℃ Elongation % 35 Tensile Strength (Mpa) 675 Yield Strngth (Mpa) 310 Hardness (Brinell) 96 approx.

* Technical specifications included herein should be used as a guideline only

6% Moly, 254 SMO (UNS S31254) Pipes, Tubes / Tubing, and Butt Weld Fittings

254 SMO (UNS S31254) pipes and tubes are available mainly in seamless form in both OD and NB sizes. In addition to standard sizes, which are available in stock, our specialty is to manufacture and supply custom size 254 SMO (UNS S31254) cold drawn seamless tubes from our factory.

254 SMO (UNS S31254) pipes and tubes can be offered in random lengths of up to 6meters long or cut to a specific length as ordered.

6% Moly, 254 SMO (UNS S31254) Seamless, Welded Pipe/ Tube, and Fittings Dimensions

Out diameter Wall thickness Length Pipe NB Sizes 1/4 “ ~ 16” SCH 5 / SCH 10 / SCH 40 / SCH 80 / SCH 160 Upto 6 Meters Butt Weld Fittings NB Sizes 1/2″ ~ 12” SCH 5 / SCH 10 / SCH 40 / SCH 80 / SCH 160 – Seamless (Custom Sizes) 5.0mm ~ 203.2mm As per requirement Upto 6 Meters Welded (in Stock + Custom Sizes) 5.0mm ~ 1219.2mm 1.0 ~ 15.0 mm Upto 6 Meters

Source – wilsonpipeline Pipe Industry Co., Limited (https://www.wilsonpipeline.com)

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