Products

Products

HomeProductsDuplex Steel & Nickel Alloy Pipe

Products

S31803 Duplex Stainless Steel Pipe

Seamless & Welded.
Cold Drawing, Cold Rolling, ERW, EFW, SAW, SSAW.
Equivalent Materials: S31803, 2205, F51, DIN 1.4462, JIS SUS329J3L.
Standard: ASTM A789, ASTM A790, EN 10216 – 5.
Description

What is S31803 Duplex Stainless Steel ?

S31803 duplex steel is a new product successfully researched and developed in 2000 year. S31803 duplex steel is a nitrogen-added duplex stainless steel (referred to as S31803 duplex steel). S31803 duplex steel is made of 21% chromium, 2.5% molybdenum and 4.5 Duplex stainless steel composed of % nickel-nitrogen alloy.

Equivalent Materials of S31803 Duplex Stainless Steel :


UNS
No


Japanese

British

DIN

JIS

BS

Number

Name

S31803

SUS 329J3L

318S13

1.4462

X2CrNiMoN22-5-3


S31803 Duplex Stainless Steel Chemical Compositions Analysis:

Weight % (all values are maximum unless a range is otherwise indicated)

UNS

C

Mn

Si

P

S

Cr

Mo

Ni

N

S31803

0.03

2.00

1.00

0.030

0.020

21.0-23.0

2.5-3.5

4.5-6.5

0.08-0.20


S31803 Duplex Stainless Steel Pipe & Tube Description:

Out Diameter(OD):

NPS 1/8"-3/4”-3”-6”-12”-20”-40”-80", DN6--DN200--DN2000. 4mm-21.3-48.3-168.3-355.6-508-2032, 0.375", 0.5", 1", 1.25".

Wall Thickness(W.T.):

0.7mm-30mm, Sch5S, SCH10S, SCH20, SCH40, Sch80, Sch XXS,

 0.035”, 0.065”, 0.083”, 0.89mm, 1.2mm, 1.65mm, BWG, SWG.

Length(L):

Fixed 6 meters, or other Length as Specified.

End:

Plain End, Bevel End.

Delivery Condition:

Annealed and Pickled, Bright Annealed, Polished(400#,600#), Hairline.

Inspection:

100% PMI, Hydrostatic Test, Eddy Current, Ultrasonic, X-Ray, Penetrant Test.

Mechanical Test:

Tension Test, Flattening Test, Flaring Test, Hardness Test, Impact Test.

Tolerance:

According to the Production Standard.

Packing:

By Bundles, Plywood Cases.

Marking:

YASE PIPELINE, Material Grade, Standard, Specification, Heat No., Lot No.

Mill Test Certificate:

According to EN 10204 3.2

Production Time:

2-30 Days, or up to the quantity.

Shipping:

By Sea, By Air, By Express.

MOQ:

1000KGS.

Sample:

Free samples but freight charge paid by customer.

Customized:

Available.


YASE PIPELINE Manufacturing S31803 Duplex Stainless Steel Products:

S31803 Stainless Steel Tubes & Pipes

S31803 Stainless Steel Seamless Pipe & Tubes

S31803 Stainless Steel Welded Pipe & Tubes

S31803 ERW/EFW Stainless Steel Pipe

S31803 Cold Drawing Seamless Stainless Steel Pipe

S31803 Cold Rolling Seamless Stainless Steel Pipe

S31803 Stainless Steel Boiler Tube

S31803 Stainless Steel Furnace Tube

S31803 Stainless Steel Square & Rectangle Tube

S31803 Stainless Steel Heat Exchanger Tube

S31803 Large Diameter Stainless Steel Pipe

S31803 Heavy Wall thickness Stainless Pipe


S31803 Duplex Stainless Steel Mechanical Properties:

Typical Values at 68°F (20℃)

UNS No

Tensile Strength (MPa) min

Yield Strength (MPa) min

Elongation (% in 50mm) min

Hardness Max

Rockwell C

S31803

620

450

25

30.50


S31803 Duplex Stainless Steel Physical Properties:

UNS No.

Density kg/m3


Elastic Modulus
(a) GPa



Mean Coefficient of
Thermal Expansion (b)



Thermal
Conductivity



Specific Heat
0-100°C
J/kg.K


Elect. Resis- tivity nΩ.m


0-100°C
μm/m/°C



0-315°C
μm/m/°C



0-538°C
μm/m/°C



at 100°C
W/m.K



at 500°C
W/m.K


S31803

7805

200

13.7

14.7

-

19.0

-

450

850


S31803 Duplex Stainless Steel : 

Early duplex stainless steels were resistant to moderate uniform corrosion and chlorine stress corrosion cracking, but their performance was greatly reduced when used in welded conditions. In order to improve this situation, nitrogen is added to S31803 dual-phase steel, which not only increases the corrosion resistance, but also has good welding conditions. It has high strength, good impact toughness and good overall and local stress corrosion resistance.


S31803 Duplex Stainless Steel Corrosion Resistance:

1. Uniform corrosion: Due to the chromium content (22%), molybdenum (3%) and nitrogen content (0.18%) of S31803 dual-phase steel, the corrosion resistance of S31803 is better than 316L and 317L in most environments.

2. Local corrosion resistance: The content of chromium, molybdenum and nitrogen in S31803 dual-phase steel makes it highly resistant to pitting corrosion and crevice corrosion in oxidizing and acidic solutions.

3. Stress corrosion resistance: The dual-phase microstructure of S31803 dual-phase steel helps to improve the stress corrosion cracking resistance of stainless steel. Chloride stress corrosion occurs in austenitic stainless steel in the presence of certain temperature, stress, oxygen and chloride. Since these conditions are not easily controlled, the use of 304L, 316L and 317L is limited in this regard.

4. Anti-corrosion fatigue: The high strength and anti-corrosion ability of S31803 dual-phase steel make it have high anti-corrosion fatigue strength. Processing equipment is susceptible to corrosive environments and loading cycles, and the properties of S31803 are ideal for such applications.


S31803 Duplex Stainless Steel Pipe Dimension Chart :


Nominal 
Pipe Size


Outside Diameter (mm)

Nominal Wall Thickness Schedule (mm)

NPS

DN

OD


SCH
5s



SCH
l0s



SCH
40s


STD

SCH 40


SCH
80s


SCH XS

SCH 80

SCH XS

1/8

6

10.3

-

1.24

1.73

1.73

1.73

2.41

2.41

2.41

2.41

1/4

8

13.7

-

1.65

2.24

2.24

2.24

3.02

3.02

3.02

3.02

3/8

10

17.1

-

1.65

2.31

2,31

2.31

3.2

3.2

3.2

3.2

1/2

15

21.3

1.65

2.11

2.77

2.77

2.77

3.73

3.73

3.73

3.73

3/4

20

26.7

1.65

2.11

2.87

2.87

2.87

3.91

3.91

3.91

3.91

1

25

33.4

1.65

2.77

3.38

3.38

3.38

4.55

4.55

4.55

4.55

1 1/4

32

42.2

1.65

2.77

3.56

3.56

3,56

4.85

4.85

4.85

4.85

1 1/2

40

48.3

1.65

2.77

3.68

3.68

3.68

5.08

5.08

5.08

5.08

2

50

60.3

1.65

2.77

3.91

3.91

3.91

5.54

5.54

5.54

5.54

2 1/2

65

73

2.11

3.05

5.16

5.16

5.16

7.01

7.01

7.01

7.01

3

80

88.9

2.11

3.05

5.49

5.49

5.49

7.62

7.62

7.62

7.62

3 1/2

90

101.6

2.11

3.05

5.74

5.74

5.74

8.08

8.08

8.08

8.08

4

100

114.3

2.11

3.05

6.02

6.02

6.02

8.56

8.56

8.56

8.56

5

125

141.3

2.77

3.4

6.55

6.55

6.55

9.53

9,53

9.53

9,53

6

150

168.3

2.77

3.4

7.11

7.11

7.11

10.97

10.97

10.97

10.97

8

200

219.1

2.77

3.76

8.18

8.18

8.18

12.7

12.7

12.7

12.7

10

250

273.1

3.4

4.19

9.27

9.27

9.27

12.7

12.7

15.09

12.7

12

300

323.9

3.96

4.57

9.53

9.53

10.31

12.7

12.7

17.48

12.7

14

350

355.6

3.96

4.78

-

9.53

11.13

-

12.7

19.05

12.7

16

400

406.4

4.19

4.78

-

9.53

12.7

-

12.7

21.44

12.7

18

450

457.2

4.19

4.78

-

9.53

14.27

-

12.7

23.83

12.7

20

500

508

4.78

5.54

-

9.53

15.09

-

12.7

26.19

12.7


S31803 Duplex Stainless Steel Tube Dimension Chart :

Outside Diameter

Birmingham Wire Gauge (BWG)

20

18

16

15

14

13

Inch

Mm

 

 

 

 

 

 

(0.889 Mm)

(1.245 Mm)

(1.651 Mm)

(1.829 Mm)

(2.108 Mm)

(2.413 Mm)

Weight, Kg/M (Average Wall  )

 1/4

0.25

6.35

0.12

0.16

0.19

 1/3

0.313

7.95

0.15

0.21

0.25

0.28

 3/8

0.375

9.525

0.19

0.25

0.31

0.34

0.39

 1/2

0.5

12.7

0.25

0.34

0.45

0.49

0.55

0.61

 5/8

0.625

15.875

0.33

0.45

0.58

0.64

0.71

0.8

 3/4

0.75

19.05

0.4

0.55

0.72

0.77

0.88

0.98

 7/8

0.875

22.225

0.46

0.64

0.83

0.92

1.04

1.18

1

1

25.4

0.54

0.74

0.97

1.06

1.21

1.37

1 1/8

1.125

28.575

0.61

0.83

1.1

1.21

1.37

1.56

1 1/4

1.25

31.75

0.68

0.94

1.23

1.35

1.53

1.76

1 3/8

1.375

34.925

0.74

1.03

1.35

1.49

1.7

1.93

1 1/2

1.5

38.1

0.82

1.13

1.49

1.64

1.87

2.17

1 3/4

1.75

44.45

0.97

1.32

1.74

1.92

2.2

2.5

2

2

50.8

1.52

1.99

2.2

2.53

2.89

2 1/4

2.25

57.15

1.73

2.26

2.48

2.87

3.26

2 3/8

2.375

60.325

1.81

2.38

2.63

3.02

3.44

2 1/2

2.5

63.5

1.91

2.52

2.78

3.18

3.66

2 7/8

2.875

73.025

2.2

2.9

3.2

3.68

4.2

3

3

76.2

2.31

3.04

3.35

3.85

4.39

3 1/2

3.5

88.9

2.69

3.56

3.93

4.51

5.15

4

4

101.6

4.11

4.54

5.21

5.95


S31803 Duplex Stainless Steel Pipe & Tube Dimensions Tolerance Chart:


Dimensions
Standard


Out Diameter(mm)

Wall Thickness(%)

Cutting Length(mm)

Size(mm)

Tolerance

Size(mm)

Tolerance

Tolerance

ASTM213

D<25.4

+0.10/-0.10

D<38.1

+20/0

D<50.8

+3.0/0

25.4~38.1

+0.15/-0.15

38.1~50.8

+0.20/-0.20

50.8~63.5

+0.25/-0.25

D≥38.1

+22/0

D≥50.8

+5.0/0

63.5~76.2

+0.30/-0.30

76.2~101.6

+0.38/-0.38

101.6~190.5

+0.38/-0.64

190.5~228.6

+0.38/-1.14

ASTM A269

D<12.7

+0.13/-0.13

 

+15/-15

 

+3.2/0

12.7~38.1

+10/-10

38.1~88.9

+0.25/-0.25

+4.8/0

88.9~139.7

+0.38/-0.38

139.7~203.2

+0.76/-0.76

ASTM A312

10.29~48.26

+0.40/-0.80

 

+12.5/-12.5

 

+6.0/0

48.26~114.30

+0.80/-0.80

114.30~219.08

+1.60/-0.80

219.08~457.20

+2.40/-0.80

ASTM A789

D≤12.7

+0.13/-0.13

 

+15/-15

 

+3.0/0

12.7~38.1

+10/-10

38.1~88.9

+0.25/-0.25

+5.0/0

88.9~139.7

+0.38/-0.38

139.7~203.2

+0.76/-0.76

ASTM A790

10.29~48.26

+0.40/-0.80

 

 

 

 

48.26~114.3

+0.80/-0.80

 

 

 

 

114.3~219.08

+1.60/-0.80

 

 

 

 

219.08~457.20

+2.40/-0.80

 

 

 

 

JIS G3459

D<30

+0.30/-0.30

S<2

+20/-20

 

+7.0/0

D≥30

+1%-1%

S≥2

+10/-10

 

EN17455-02

10~30

+0.30/-0.30

S≤3

+14/-14

1.0~3.0

+15.0/0

30~50

+4.00/-4.00

S>3

+12/-10

D>50

+9%/-9%

 

 

EN17456-02

6~10

+0.20/-0.20

0.5~1.0

+0.15/-0.15

 

+15.0/0

10~30

+0.30/-0.30

1.0~3

+14/-14

 

30~50

+4.00/-4.00

S>3

+12/-10

 

D>50

+0.90%-0.9%

 

 

 

Contact Us

Copyright Wenzhou Yase Pipeline Equipment Co.,LTD. All Rights Reserved.

Privacy Notice | Privacy Policy | XML | Sitemaps | Powered by:Otree