Duplex & Super Duplex Stainless steel pipes S31254

Stainless Steel 254 SMO is a high-alloy austenitic chromium-nickel-molybdenum stainless steel developed for use in seawater, pulp and paper industry, brackish water and other aggressive chloride-bearing media. The specific levels of Cr, Ni, Mo, and N in this “super austenitic” chemical makeup allow 31254 to combine impact toughness resistance to corrosion cracking, with pitting and crevice corrosion resistance. The result is strength of nearly twice that of 300 series stainless steels.

UNS S31254 is often referred to as a “6% Moly” grade due to the molybdenum content; the 6% Moly family has the ability to withstand high temperatures and maintain strength under volatile conditions. This grade has surpassed its original intent and overlapped into many industries proving useful owing to its high level of molybdenum amount other elements, which allows 31254 to be used successfully in various applications such as flue gas desulfurization and chemical environments. In some applications it has even been found to be a more cost effective substitute for high nickel and titanium alloys.

Excellent resistance to pitting and crevice corrosion, PRE = ≥42.5*. (*The PRE is defined as, in weight-%, PRE = %Cr + 3.3 x %Mo + 16 x %N)
High resistance to general corrosion
High resistance to stress corrosion cracking
Higher strength than conventional austenitic stainless steels
Good weldability

Saltwater handling
Tall oil distillation columns
Flue gas desulfurization scrubbers
Components used in petroleum production
Food processing equipment
Process equipment in chemical industry
Bleaching equipment in the pulp and paper industry
Flue-gas cleaning
Desalination
Heat exchangers

Excellent resistance to pitting and crevice corrosion due to its high chromium, molybdenum, and nitrogen content
Has a very low carbon content, which means there is very little risk of carbide precipitation during heating
Possesses very good resistance in water containing chlorides, therefore, it is suitable for use in seawater as it can be exposed to it for prolonged periods without suffering from crevice corrosion

Testing (Destructive, Non Destructive)

Positive Material Identification – PMI Testing	Hydrostatic Test
Chemical Analysis – Spectro Analysis	Hydrogen-Induced Cracking (HIC) Test
Mechanical Testing Such as Tensile, Elongation, Reduction of Area	Sulfide Stress Corrosion Cracking (SSC), NACE TM 0177
Micro Test	Radiography Test
Macro Test	Dye Penetrant Test (DP Test)
Hardness Test	Ultra Sonic Test (UT)
Pitting Resistance Test	Eddy Current Testing
Intergranular Corrosion (IGC) Test	Impact Test
Flaring Test	Bend Test
Flattening Test

Inspection

Our internal inspection reports would be provided for all the goods before shipment.
Buyers or their associates are most welcome to visit us for personal inspect
We regularly have inspections ongoing at our premises from internationally acclaimed Inspection Agencies such as TUV, BVIS, SGS, Llyods, DNV etc.

Prices for stainless steel 254 SMO materials are directly co related to prices of the raw materials such as iron ore, metal scrap, chromium, nickel and various other alloying elements. The production cost of heat resistant stainless steel and nickel alloy plates is high as they contain high amount of nickel and chromium. Meanwhile, mild steel material is among the lowest cost steel available, followed by carbon steel, 400 series stainless steels, aluminium, alloy steel, and 300 series stainless steel. Special alloys such as titanium, Inconel, Monel and Hastelloy cost very high as the nickel, chromium and moly content is very high.

For special and discounted prices for various types of stainless steel 254 SMO products, please feel free to contact us through email, phone or whatsapp.