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254 SMO (UNS S31254, DIN W.Nr.1.4547) is a high performance austenitic stainless steel. Due to its high molybdenum content, it has extremely high resistance to pitting and crevice corrosion. It is specially developed and developed for the resistance to corrosion of halide-containing acids, such as hydrochloric acid mixed with hydrochloric acid, hydrofluoric acid, phosphoric acid and sulfuric acid. 254 SMO also has good resistance to uniform corrosion. In some cases, it is comparable to expensive nickel alloys and titanium alloys.
  • 254SMO
  • Ronsco
  • 254SMO
254 SMO (UNS S31254, DIN W.Nr.1.4547) is an austenitic stainless steel with good corrosion resistance. Its C content is less than 0.03%, so it is called pure austenitic stainless steel (< 0.01% is also called super austenitic stainless steel). Super stainless steel is a kind of special stainless steel. First of all, it is different from ordinary stainless steel in chemical composition. It is a kind of high alloy stainless steel with high nickel, high chromium and high molybdenum. Among them, 254SMO with 6% Mo is more famous. This kind of steel has very good local corrosion resistance. It has good pitting corrosion resistance (PI ≥ 40) and good stress corrosion resistance under the conditions of seawater, aeration, crevice and low-speed scouring. It is an alternative material for Ni based alloy and titanium alloy.
254 SMO (UNS S31254, DIN W.Nr.1.4547) Chemical Composition:
Content C Si  Mn S Ni Cr P Mo Cu N Fe

17.50  19.50 
6.00  0.5 0.18 BAL
Max 0.02  0.80  1.00  0.01 18.50  20.50  0.03  6.50  1.00  0.22  BAL

254 SMO (UNS S31254, DIN W.Nr.1.4547) Chemical Composition:
Forms & Specifications
Bar & Profile: ASTM A276/ASME SA276
Thick Plate, Sheet & Strip: ASTM A240/ASME SA240,
Seamless pipe/tube: ASTM A312/ASME A312, ASTM A213/ASME SA213, ASTM A269/ASME SA269,
Welded nominal pipe: ASTM A312/ASME A312,  , ASTM A269/ASME SA269, ASTM A249/ASME SA249, ASTM A409/ASME SA409
Pipe fittings: ASTM A403
Forgings: ASTM A473, ASTM A182
254 SMO Physical Properties 254 SMO Application:
Density: 8.24g/cm³
Melting range: 1320°C -1390°C 
Ocean: marine structures in the sea environment, seawater desalination, marine aquaculture, seawater heat exchange, etc.
Environmental protection field: flue gas desulfurization device for thermal power generation, wastewater treatment, etc.
Energy sector: atomic power generation, comprehensive utilization of coal, and ocean wave power generation.
Petrochemical industry: refining, chemical and chemical equipment.
Food field: salt making, soy sauce brewing, etc.
High concentration chloride ion environment: paper industry, various bleaching devices.
254 SMO Typical Mechanical Properties:
Material  Temp℃ Yield Strength 0.2%
min. (mpa)
Tensile Strength
min.  (mpa)
Bar RT 310  690 
tube RT 310.00  655.00 
Sheet & Strip RT 310  690 
Plate RT 310  655 

The advantage of Ronsco
1, Price lower than Europe, USA 20~30%.
2, 100% quality guaranty because we remelt by VIM+ESR.
3, Best Service: 0 payment if you test not ok. 
4, 0 fee for UT, PT. 
5, Low MOQ for new materials: 200kg.
6, Fast 20~30 days of lead time for new materials.

Product Name 254SMO, UNS S31254, DIN W.Nr.1.4547
Type  Welded
Shape  Square / Rectangular / Round
Grade  Stainless steel 304 / 304L / 310S / 316L / 317L / 904L / 2205 / 2507 / 32760 / 253MA / 254Mo / S31803 / S32750 / S32205 etc
Monel 400 / Monel K-500 
Inconel 600 / Inconel 601 / Inconel 625 / Inconel 617 / Inconel 690 / Inconel 718 / Inconel X-750
Incoloy A-286 / Incoloy 800 / Incoloy 800H / Incoloy 800HT
Incoloy 825 / Incoloy 901 / Incoloy 925 / Incoloy 926
Nimonic 75 / Nimonic 80A / Nimonic 90 / Nimonic 105 / Nimonic 263 / Nimonic L-605
Hastelloy B / Hastelloy B-2 / Hastelloy B-3 / Hastelloy C / Hastelloy C-276 / Hastelloy C-22
Hastelloy C-4 / Hastelloy C-200 / Hastelloy G-35 / Hastelloy X / Hastelloy N
Austenitic stainless steel 904L / XM-19 / 316Ti / 316LN / 371L / 310S / 253MA
DP steel 254SMo / F50 / 2205 / 2507 / F55 / F60 / F61 / F65 
PH stainless steel 15-5PH / 17-4PH / 17-7PH 
Out diameter  Welded Pipe 1.9mm - 5000mm or customized
Thickness  Welded Pipe 0.5mm - 80mm or customized
Max Length  Welded Pipe 50000mm or customized
Finish  2B, Pickling, polished, brushed, sandblast, BA, EP,
Packing  waterproof polybag, wooden box, end cap, wooden crame/pallet
Inspection  TUV,SGS,BV,ABS,LR and so on
Application  Chemical, Pharmaceutical & Bio-Medical, Petrochemical & Refinery, Environmental, Food Processing, Aviation, Chemical Fertilizer, Sewage Disposal, Desalination, Waste Incineration etc. 
Processing Service  Machining : Turning / Milling / Planing / Drilling / Boring / Grinding / Gear Cutting / CNC Machining  
Deformation processing :  Bending / Cutting / Rolling / Stamping 
Delivery Time 7-40 days
Payment  T/T, L/C,D/A,D/P, Western Union,MoneyGram,According to customer requirements payments for offline orders.
Transportation By air, by sea, by train, by truck
Sample Free
Warranty Trade assurance after sales service

Production flow chart of seamless pipe1

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