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254SMO Stainless Steel Pipe

254 SMO stainless steel is an austenitic stainless steel designed for maximum resistance to pitting and crevice corrosion. With high levels of chromium, molybdenum, and nitrogen, 254SMO is especially suited for high chloride environments such as brackish water seawater pulp mill bleach plants and other high chloride process streams. 254SMO offers chloride resistance superior to that of Alloy 904L Alloy 20, Alloy 825 and Alloy 254SMO is compatible with the common austenitic stainless steels. It is often used as a replacement in critical components of larger constructions where Type 316L or 317L has failed by pitting, crevice attack, or chloride stress corrosion cracking. In new construction, 254SMO has been found in many cases to be a technically adequate and much less costly substitute for nickelbased alloys and titanium. 254SMO is substantially stronger than the common austenitic grades, but is also characterized by high ductility and impact strength. 254SMO is readily fabricated and welded.


254 SMO  stainless steel is an austenitic stainless steel designed for maximum resistance to pitting and crevice corrosion. With high levels of chromium, molybdenum, and nitrogen, 254SMO is especially suited for high chloride environments such as brackish water seawater pulp mill bleach plants and other high chloride process streams. 254SMO offers chloride resistance superior to that of Alloy 904L Alloy 20, Alloy 825 and Alloy 254SMO is compatible with the common austenitic stainless steels. It is often used as a replacement in critical components of larger constructions where Type 316L or 317L has failed by pitting, crevice attack, or chloride stress corrosion cracking. In new construction, 254SMO has been found in many cases to be a technically adequate and much less costly substitute for nickelbased alloys and titanium. 254SMO is substantially stronger than the common austenitic grades, but is also characterized by high ductility and impact strength. 254SMO is readily fabricated and welded.


GB/T UNS AISI/ASTM ID W.Nr
015Cr20Ni18Mo6CuN S31254 254SMo F44 1.4547

Chemical Composition:

Grade % Ni Cr Mo Cu N
254SMO Min 17.5 19.5 6 0.5 0.18
Max 18.5 20.5 6.5 1 0.22

C Mn Si P S

- - - - -

0.02 1 0.8 0.03 0.01
Physical Performance:
Heat Treatment T*S Y*S El
Rm N/mm2 RP0.2N/mm2 A5 %
Solution 650 300 35


The application fields of 254SMO:

254SMO alloy is a versatile material, can be applied in many industrial fields:

Petroleum, petrochemical equipment, such as corrugated pipe in petrochemical equipment.

Flue gas desulfurization unit power plant, main parts: absorption tower, flue, stall door, inner parts, spray system tower etc.

The sea water or system, such as power plant with thin wall condensation pipe, cooling sea waterdesalination processing

equipment, not even in the water may flow device can also be used.

The desalination industry, such as salt or salt removal equipment.

The desalination industry, such as salt or salt removal equipment.

Heat exchanger, especially in the heat exchanger of chloride ion in the work environment.


Seamless Stainless Steel Pipe

Standards: ASTM A312
Sizes: 1/4″ Thru 20”

Schedules: 10s, 40s, 80s, 160, and XXH

True 40, True 80


Welded stainless steel pipe
Standards: ASTM A312
Sizes: 1/4″ Thru 36″
Schedules: 10s, 20, 40s, 80s


Equipment:


NB

Size

OD

mm

40S

mm

5S

mm

10S

mm

S 10

mm

S 20

mm

S 40

mm

S 60

mm

XS/80S

mm

S 80

mm

S 100

mm

S 120

mm

S 140

mm

S 160

mm

XXS

mm


1/8”

10.29



1.24



1.73



2.41







1/4”

13.72



1.65



2.24



3.02







3/8”

17.15



1.65



2.31



3.20






15

1/2”

21.34

2.77

1.65

2.11



2.77


3.73

3.73




4.78

7.47

20

3/4”

26.67

2.87

1.65

2.11



2.87


3.91

3.91




5.56

7.82

25

1”

33.40

3.38

1.65

2.77



3.38


4.55

4.55




6.35

9.09

32

1 1/4”

42.16

3.56

1.65

2.77



3.56


4.85

4.85




6.35

9.70

40

1 1/2”

48.26

3.68

1.65

2.77



3.68


5.08

5.08




7.14

10.15

50

2”

60.33

3.91

1.65

2.77



3.91


5.54

5.54




9.74

11.07

65

2 1/2”

73.03

5.16

2.11

3.05



5.16


7.01

7.01




9.53

14.02

80

3”

88.90

5.49

2.11

3.05



5.49


7.62

7.62




11.13

15.24

90

3 1/2”

101.60

5.74

2.11

3.05



5.74


8.08

8.08






100

4”

114.30

6.02

2.11

3.05



6.02


8.56

8.56


11.12


13.49

17.12

125

5”

141.30

6.55

2.77

3.40



6.55


9.53

9.53


12.70


15.88

19.05

150

6”

168.27

7.11

2.77

3.40



7.11


10.97

10.97


14.27


18.26

21.95

200

8”

219.08

8.18

2.77

3.76


6.35

8.18

10.31

12.70

12.70

15.09

19.26

20.62

23.01

22.23

250

10”

273.05

9.27

3.40

4.19


6.35

9.27

12.70

12.70

15.09

19.26

21.44

25.40

28.58

25.40

300

12”

323.85

9.53

3.96

4.57


6.35

10.31

14.27

12.70

17.48

21.44

25.40

28.58

33.32

25.40

350

14”

355.60

9.53

3.96

4.78

6.35

7.92

11.13

15.09

12.70

19.05

23.83

27.79

31.75

35.71


400

16”

406.40

9.53

4.19

4.78

6.35

7.92

12.70

16.66

12.70

21.44

26.19

30.96

36.53

40.49


450

18”

457.20

9.53

4.19

4.78

6.35

7.92

14.27

19.05

12.70

23.83

29.36

34.93

39.67

45.24


500

20”

508.00

9.53

4.78

5.54

6.35

9.53

15.09

20.62

12.70

26.19

32.54

38.10

44.45

50.01


550

22”

558.80

9.53

4.78

5.54

6.35

9.53


22.23

12.70

28.58

34.93

41.28

47.63

53.98


600

24”

609.60

9.53

5.54

6.35

6.35

9.53

17.48

24.61

12.70

30.96

38.89

46.02

52.37

59.54


650

26”

660.40

9.53



7.92

12.70



12.70







700

28”

711.20

9.53



7.92

12.70



12.70







750

30”

762.00

9.53

6.35

7.92

7.92

12.70



12.70







800

32”

812.80

9.53



7.92

12.70

17.48


12.70







850

34”

863.60

9.53



7.92

12.70

17.48


12.70







900

36”

914.40

9.53



7.92

12.70

19.05


12.70








Chemical Composition

GradesC maxMn maxP maxS maxSi maxCrNiMo
3040.082.000.040.030.07518.00-20.008.00-11.00/
304L0.0352.000.040.030.07518.00-20.008.00-13.00/
3160.082.000.040.030.07516.00-18.0011.00-14.002.00-3.00
316L0.0352.000.040.030.07516.00-18.0010.00-15.002.00-3.00


Mechanical Properties

GradesItemperTensile PsiYield PsiElong %Rockwell Hardness
304Annealed85000-10500035000-7500020-5580-95
304LAnnealed
I1/8 Hard
80000-10500030000-7500020-5575-95
316Annealed85000 min35000 min50 min80 min

Annealed80000 min30000 min50 min75 min



Annealed, Pickling, Polished



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