ASTM A790 S31803 Duplex Seamless And Welded Pipe Corrosion Resistant

Product Details
Place of Origin: China
Brand Name: TONG CHUANG
Certification: ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008
Model Number: A790 S31803
Payment & Shipping Terms
Minimum Order Quantity: 1000KGS
Price: Negotiable
Packaging Details: Ply-wooden Case /Iron Case/ Bundle with plastic Cap/Woven Case
Delivery Time: Depends on quantity
Payment Terms: T/T,L/C
Supply Ability: 1000 tons per month

SKU: 1320 Category:
Specification:ASTM A790， ASME SA790Grade:S31803
Type:SeamlessSurface:Pickled And Annealed， Polished， Bright Annealed
Non Destructive Test:Eddy Current Test -ASTM E426， Hystostatic Test-ASTM A999， Ultrsonic Test -ASTM E213Size Standard:ASTM B16.10 & B16.19 & Customized
High Light:

Duplex Stainless Steel Round Pipe

，

Polished Duplex Stainless Steel Pipe

，

S31803 Stainless

ASTM A790 S31803 Duplex Seamless And Welded Pipe Corrosion Resistant

UNS S31803， F51， 1.4462 duplex stainless steel is designed to combine improved resistance to stress corrosion cracking， pitting， crevice corrosion and high strength when compared with other stainless alloys.

 

These attributes mean that Duplex UNS S31803， F51， 1.4462 can be used successfully as an alternative to standard stainless steel specifications in applications where higher strength and resistance to stress corrosion cracking is required.

Chemical Composition of S31803

 

PropertyValue
Carbon

0.03%

Chromium

21-23%

Manganese

2%

Molybdenum

2.5-3.5%

Nickel

4.5-6.5%

Nitrogen

0.08-0.02%

Phosphorus

0.03%

Silicon

1%

Sulfur

0.02%

 

Mechanical Behaviour

PropertyValue
Tensile Strength， min， ksi， [MPa]90 [ 620]
Yield Strength， min， ksi [MPa]65 [450]
Elongation in 2 in. or 50mm， min， %25
Hardness， maxHBWHRC
29030

Tolerances Of ASTM A790 UNS S31803 Pipe

NPS DesignatorPermissible Variations in Outside Diameter
Over In.Under In.
1/8 to 1-1/2， incl1/64 (0.015)1/32 (0.031)
Over 1-1/2 to 4， incl1/32 (0.031)1/32 (0.031)
Over 4 to 8， incl1/16 (0.062)1/32 (0.031)
Over 8 to 18， incl3/23 (0.093)1/32 (0.031)

Pressure Rating

Pipes O.D. (in.)Duplex Steel 2205 Pipe Wall Thickness of Pipe (inches)
.035.109.028.065.049.095.083.120
1/44800 370095007000   
1/810100 7900     
3/83100  61004400   
5/163700  73005400   
3/4   3000220046004000 
1/22300  44003200   
1 3900 2200 340029004300

Duplex Stainless Steel Features

Duplex stainless steels have Austenitic and Ferritic stainless steel microstructure， and possess properties in two groups stainless steel， however， there are different.

Versus Austenitic

  • Higher yield strength
  • Greater corrosion resistance
  • Stress corrosion cracking resistance
  • Not common， used temperate under 250 C.
  • Fabricability not good as Austenitic
  • Strictly control heat treatment and welding process
  • Price stability

Versus Ferritic

  • Good toughness than Ferric， not hard
  • Greater corrosion
  • Fabricability is better
  • Better weldability
  • Wide usage than Ferritic
  • Higher price

APPLICATIONS:

· Chemical processing， transportation and storage

· Oil and gas exploration and offshore drilling rigs

· Oil and gas refining

· The marine environment

· Pollution control equipment

· Pulp and paper manufacturing

· Chemical process plant

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