Ms Erw Round Pipe
SMO 254 Erw / Welded, Seamless Pipes
|Country of Origin||Made in India|
|Material Grade||SMO 254 STAINLESS STEEL|
|Unit Pipe Length||6m|
254 SMO Seamless Pipe, SMO 254 Welded Tubing Suppliers in India
Leomet Alloys is one of the large suppliers for high quality SMO 254 Pipe. SMO 254 Pipe is well tested on variety parameters thereby ensuring its high quality and durable standards. SMO 254 Round Pipe (UNS S31254) is an austenitic ss designed for maximum resistance to pitting and crevice corrosion. SMO 254 Seamless Pipe is developed for use in seawater i.e. halide-containing environment. SMO 254 ERW Pipe is often used in Desalination, Flue gas cleaning, Heat exchangers and many more. SMO 254 Welded Pipe is a very high end molybdenum and nitrogen alloyed super austenitic ss with low carbon content.
SMO 254 is a high-alloy austenitic stainless steel developed for use in seawater and other aggressive chloride-bearing media. The steel is characterized by the following properties:
Excellent resistance to pitting and crevice corrosion, PRE = 42.5*
High resistance to general corrosion
High resistance to stress corrosion cracking
Higher strength than conventional austenitic stainless steels
*The PRE is defined as, in weight-%, PRE = %Cr + 3.3 x %Mo + 16 x %N
EN Number: 1.4547
EN Name: X1CrNiMoCuN20-18-7
AFNOR: Z1 CNDU 20.18.06AZ*
* Obsolete. Replaced by EN.
** Nearest equivalent grade.
Seamless tube and pipe: ASTM A269, A213, A312, NFA 49-217, EN 10216-5
Welded tube and pipe: ASTM A249, A269 , A312, A358, A409
Fittings: ASTM A182
Chemical composition (nominal) %
C Si Mn P S Cr Ni Mo N Cu
0.020 0.80 1.00 0.030 0.010 20 18 6.1 0.20 0.7
SMO 254 is used in the following applications:
Equipment for handling of seawater, such as, seawater cooling, cooling water pipes, ballast water systems, firefighting systems etc.
Hydraulic and instrumentation tubing
Equipment in pulp bleaching plants
Components in gas cleaning systems
Tanks and pipelines for chemicals with high halide contents
Trademark information: SMO 254 is a trademark owned by Outokumpu OY.
Grade Time to failure Remark
ASTM TP316 <150 h Pitting
'904L' No failure (1000 h) Crevice corrosion
SMO 254 No failure (1000 h) No attack
Avoid abrasion against copper/copper alloys or other similar metals which, if present in metallic form, can cause cracks during subsequent welding, hot processing or heat treatment.
The excellent formability of 254 SMO permits cold bending to very tight bending radii. Annealing is not normally necessary after cold bending.
254 SMO is a high alloyed austenitic stainless steel and thus tougher inserts in metal cutting are needed than is the case for lower alloyed austenitic grades. When machining 254 SMO considerably lower cutting speeds are recommended compared to the grades Sanmac 304/304L and Sanmac 316/316L, which have improved machinability.