Stainless Steel 254 SMO Elbow Fitting

 

JN ALLOY supplies stainless steel UNS S31254 6mo 90 Degree Elbow, SMO DIN 1.4547 45 Degree Elbow UNS S31254 6mo 3D Elbow, ASTM B403 SMO 254 End Cap, Grade SMO 254 5D Elbow, Grade F44 Buttweld Fitting, SMO 254 Pipe Fitting, ASTM B403 SMO 254 1D Elbow, SMO DIN 1.4547 5D Elbow, 254 SMO Long Radius Elbow, ANSI B16.9 SMO 254 Short Radius Elbow.

 

254 SMO, also known as UNS S31254 or 6% molybdenum super austenitic stainless steel, is a high-alloyed stainless steel that offers excellent resistance to corrosion, especially in aggressive environments. The SMO UNS S31254 Elbow is used to change the flow of direction in piping systems by 90 or 45 degrees. These elbows are available in long-radius or short radius. Our institution is the leading supplier and manufacturer of SMO 254 Elbow . We thrive to supply and produce high-quality products, which are available at reasonable rates. It is important to note that the advantages of 254 SMO elbows may vary depending on the specific application and operating conditions. It is recommended to consult with engineers, manufacturers, or industry professionals to evaluate the specific advantages and suitability of 254 SMO elbows for your particular project requirements.

 

Alloy 254 Forged Elbow Fittings Vs SMO 254 Buttweld Elbow Fittings

 

The Alloy 254 Forged Elbow Fittings are used for pipes that have a diameter between 2 to 4 inches, whereas the SMO 254 Buttweld Elbow Fittings are used for pipes having larger diameters. Also, the forged fittings are manufactured using solid blocks of steel. They are then machined to give the desired shape. Whereas, for buttweld fittings, they are manufactured by bending, shaping, and cutting seamless or welded pipes of steel.

 

Chemical Composition of 254 SMO Elbow

 

S31254

Ni

C

Mo

Mn

Si

Fe

Cu

S

P

Cr

17.5 – 18.5

0.02 max

6 – 6.5

1 max

0.8 max

0.5 – 1

0.01 max

0.03 max

19.5 – 20.5

 

Key Points About 254 SMO Elbows

 

Corrosion Resistance: 254 SMO elbows are highly resistant to corrosion in various environments, including seawater, chloride-containing solutions, acids (such as sulfuric acid and phosphoric acid), and other aggressive media. This makes them suitable for use in industries like offshore, chemical processing, and desalination.

Strength and Durability: 254 SMO elbows offer high strength and durability, making them suitable for demanding applications where resistance to stress corrosion cracking and pitting corrosion is essential.

Fabrication and Weldability: 254 SMO elbows can be easily fabricated and welded, allowing for flexibility and ease of installation in piping systems. However, it is important to follow proper welding procedures and use appropriate filler materials to maintain the corrosion resistance properties of the alloy.

 

Dimensions of SMO UNS S31254 Elbow

 

Nominal
Pipe

Size

Outside
Diameter

90° Elbows

45° Elbows

(inches)

 

Long Radius

Short Radius

Long Radius

 

(mm)

(inches)

Center to Face
(inches)

Center to Face
(inches)

Center to Face
(inches)

Radius
(inches)

1/2

21.3

0.840

1 1/2

5/8

 

3/4

26.7

1.050

1 1/8

7/16

 

1

33.4

1.315

1 1/2

1

7/8

 

1 1/4

42.2

1.660

1 7/8

1 1/4

1

 

1 1/2

48.3

1.900

2 1/4

1 1/2

1 1/8

3

2

60.3

2.375

3

2

1 3/8

4

2 1/2

73.0

2.875

3 3/4

2 1/2

1 3/4

5

3

88.9

3.500

4 1/2

3

2

6

3 1/2

101.6

4.000

5 1/4

3 1/2

2 1/4

7

4

114.3

4.500

6

4

2 1/2

8

5

141.3

5.563

7 1/2

5

3 1/8

10

6

168.3

6.625

9

6

3 3/4

12

8

219.1

8.625

12

8

5

12

10

273.1

10.750

15

10

6 1/4

15

12

323.9

12.750

18

12

7 1/2

18

 

ASTM A403 F44 Elbow Applications

 

254 SMO elbow is a kind of pipe fitting made of 254 SMO stainless steel, which has excellent corrosion resistance, high temperature resistance and mechanical properties. It is widely used in the following fields:

 

Petroleum and petrochemical industry: 254 SMO elbow is used in petrochemical equipment such as bellows. It can resist the corrosion of various chemical media in the petroleum and petrochemical production process, ensuring the safe and stable operation of the equipment.

Paper industry: In the pulp and paper bleaching equipment, such as pulp digesters, bleaching equipment, and the vats and rollers of filter washers. 254 SMO elbow can resist the corrosion of corrosive media such as chlorine - containing solutions and acids in the paper - making process, improving the service life of the equipment.

 

Power generation industry: In the flue gas desulfurization device of power plants, 254 SMO elbow is mainly used in the tower body, flue, damper door, internal parts, and spraying system of the absorption tower. It can resist the corrosion of sulfur - containing flue gas and acid - base media, ensuring the normal operation of the desulfurization device.

 

Marine and seawater treatment industry: It is used in thin - walled condenser pipes cooled by seawater in power plants, seawater desalination treatment equipment, etc. Even in equipment where seawater may not flow, 254 SMO elbow can also be applied. It has excellent corrosion resistance in seawater environment, which can avoid the corrosion and leakage of pipes and equipment.

 

Desalination industry: It is used in salt - making or desalination equipment. 254 SMO elbow can resist the corrosion of high - salt and high - chloride ion media, ensuring the stable operation of desalination equipment.

 

Heat exchanger: It is especially suitable for heat exchangers in chloride - ion working environments. 254 SMO elbow can resist the corrosion of chloride ions, improve the heat transfer efficiency and service life of heat exchangers.

 

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