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ASTM A789 / ASME SA789 UNS S31803 / 1.4462 DUPLEX STAINLESS STEEL SEAMLESS TUBE

  • ASTM A789 / ASME SA789 UNS S31803 / 1.4462 DUPLEX STAINLESS STEEL SEAMLESS TUBE
Place of Origin CHINA
Brand Name Shangle
Certification PED,IS09001
Model Number 12.7
Minimum Order Quantity Negotiable
Price Negotiable
Packaging Details Woven Packing
Delivery Time 30DAYS
Payment Terms L/C, T/T
Supply Ability 500TONS/30DAYS

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Product Details
Material 304 ,304L 310 321 316 316L Standard AISI, ASTM, DIN, EN, GB
Shape SCH10, SCH20, SCH30, STD, SCH40, SCH60, SCH80 Technique Cold Draw
Application Oil, Petroleum/Power Package Woven Packing
Highlight

ASTM A789 SEAMLESS TUBE

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ASME SA789 UNS S31803 TUBE

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1.4462 DUPLEX STAINLESS STEEL TUBE
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Product Description

ASTM A789/ASME SA789 UNS S31803/1.4462 DUPLEX STAINLESS STEEL SEAMLESS TUBE

 

 

Overview:

 

The ASTM A789 UNS S31803 tubing refers to seamless and welded tubing manufactured in accordance with ASTM A789/ASTM A789M, which contains approximately 50% ferrite and 50% austenite. The stress corrosion resistance of ASTM A789 in neutral chloride solution and H2S is better than that of 304L, 316L austenitic stainless steel, and 18-5mo type duplex stainless steel. The UNS S31803 tubing is especially suitable for the temperature range of -50°F/+600°F. It may also be considered for applications beyond this temperature range, but there are some limitations, especially when applied to weld structures.

 

The ASTM A789/A789M UNS 31803 tubes shall be made by the seamless or welded process with no filler metal added. It shall be quenched in cool air or water rapidly to a temperature of 1800°F[980°C]-1900°F[1040°C]. For seamless tubes, as an alternative to final heat treatment in a continuous furnace or batch-type furnace, while the tube temperature is not lower than the specified minimum solution treatment temperature, tubes may be immediately quenched in water or rapidly cooled by other means.

 

Specification:

 

Specification ASTM A789 & Its equivalent ASME, DIN & EN Standard.
Grades UNS S31803; 1.4462
Type U-bend & Straight seamless tube
Outer Diameter 1/4'' to 2'' or custom size
Wall Thickness BWG25;BWG22;BWG20;BWG18;BWG16;BWG14;BWG12;BWG10
Length Up to 6 meters, custom cut lengths
Delivery Condition Solution Annealed & Pickled; Bright Annealed
Ends Plain End, Beveled End
Other Testing Product Analysis, Eddy Current Test, Hydrostatic Test, Ultrasonic Test, Flattening Test, Hardness Test, Tensile Test etc.
Dimension All Pipes & Tube Is Manufactured and Inspected / Tested to the Relevant standards including ASTM and ASME
Packing Plywood case/Woven bag in bundle

 

Grade C Mn P S Si Cr Ni Mo N
UNS S31803 0.03 max 2.00 max 0.03 max 0.02 max 1.00 max 21.0-23.0 4.5-6.5 2.5-3.5 0.08-0.2

 

Grade Tensile Strength, min, ksi (MPa)

Yield Strength,

min, ksi (MPa)

Elongation in 2 in.

or 50mm, min (%)

 Hardness

Solutioning Temperature,

min, °F(°C)
Rockwell Brinell/Vickers
UNS S31803 90(620) 65(450) 25 30HRC 290HBW/290HV 1870–2010
(1020–1100)

 

Applications:

 

1.Chemical Processing, Transport and Storage

2.Oil and Gas Exploration and Offshore Rigs

3.Mil and Gas Refining

4.Marine Environments

5.Pollution Control Equipment

6.Pulp & Paper Manufacturing

7.Chemical Process Plant

 

Tags:

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