ASTM A790 UNS S31803 Duplex Stainless Steel Pipe
ASTM A790 UNS S31803 Duplex Stainless Steel Pipe
ASTM A790 UNS S31803 Duplex Stainless Steel Pipe
ASTM A790 UNS S31803 Duplex Stainless Steel Pipe
ASTM A790 UNS S31803 Duplex Stainless Steel Pipe
ASTM A790 UNS S31803 Duplex Stainless Steel Pipe

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ASTM A790 UNS S31803 Duplex Stainless Steel Pipe

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Model No. : ASTM A790/ASME SA790 UNS S31803
Brand Name : YUHONG
standard : Astm
Section shape : Round
place of origin : China
Standard : ASTM A790/ASME SA790
Material Grade : UNS S31803
NDT : ET, UT, HT , PT
Surface : Pickled And Annealed, Polished, Bright Annealed
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9yrs

Ningbo, Zhejiang, China

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Product description

ASTM A790 UNS S31803 Duplex Stainless Steel Pipe


ASTM A790 UNS S31803 is a specification in duplex steel material. The material is an alloy of steel containing chromium and molybdenum. The addition of these materials makes the pipes stronger and more corrosion resistant. The duplex grades are divided into three groups as duplex, lean and super duplex. The super duplex is used for specific applications that operate under elevated temperatures. The Duplex UNS S31803 Pipes also possesses an elevated strength due to the production nature. The material could be hot rolled and welded or be cold drawn. The cold drawn pipes are seamless and have less absolute roughness which makes them precise in dimensions. The ease of welding in the ASTM A790 UNS S31803 Tube makes it a choice for high pressure applications that will require extensive welding at installation.

YUHONG GROUP specializes in ASTM A790 UNS S31803 Duplex Stainless Steel Seamless Pipe with more than 30 years’ experience in Manufacturing it. we offer high quality, lower cost but the best service.


Equivalent Grade:

Grade

UNS
No

Old British

Euronorm

Swedish SS

Japanese JIS

 

 

BS

En

No

Name

 

 

2205

S31803

318S13

-

1.4462

X2CrNiMoN22-5-3

2377

SUS 329J3L


Features:

High resistance to chloride stress corrosion cracking

Resistance to chloride pitting and crevice corrosion

Good general corrosion resistance

Good sulfide stress corrosion resistance

High Strength

Good weldability and workability


Physical Properties:

Grade

Density
(kg/m3)

Elastic
Modulus(GPa)

Mean Co-eff of Thermal
Expansion (μm/m/°C)

Thermal
Conductivity (W/m.K)

Specific
Heat
0-100°C( J/kg.K)

Electrical
Resistivity
(nΩ.m)

0-100°C

0-315°C

0-538°C

at 100°C

at 500°C

UNS S31803

782

190

13.7

14.2

19

418

850


Chemical composition:

UNS S31803

Elements

Cr

C

Mo

N

Ni

P

S

Si

Mn

Min

21.0

0.03

2.5

0.08

4.5

 -

 -

-

-

Max

23.0

- 

3.5

0.20

6.5

0.03

0.02

1.0

2.0


Mechanical Properties:

Grade

Tensile Strength
(MPa) min

Yield Strength
0.2% Proof
(MPa) min

Elongation
(% in 50mm) min

Hardness

Rockwell C (HR C)

Brinell (HB)

UNS S31803

621

448

25

31 max

293 max


Applications:

Chemical Processing, Transport and Storage

Oil and Gas Exploration and Offshore Rigs

Mil and Gas Refining

Marine Environments

Pollution Control Equipment

Pulp & Paper Manufacturing

Chemical Process Plant


ASTM A790 S31803 DUPLEX SS PIPE (8)

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