A789M S31803 Bright Annealed Tube
GNEE sells more than 1,500 tons of seamless and welded steel tubes to various engineering industries every year. Our goal is to ensure that our customers have the highest expectations for the delivery and product quality of ASTM A789 UNS S31803 Duplex Tube.
A789M S31803 Duplex Tube is one of the most recognized and widely used duplex stainless steel grades, characterized by its duplex microstructure, consisting of approximately 50% austenite and 50% ferrite.A789M S31803 stainless steel annealed tube is not recommended for use at temperatures above 600° F. At temperatures above 600° F, it may become brittle.
A789M S31803 Seamless Annealed Tube can be used in marine environments, salt water, bleaching processes, closed loop water system equipment and some food processing applications.
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SA789 UNS S31803 pipe Chemical Composition
| UNS Designation |
Composition, % | ||||||||||
| C Max |
Mn max |
P max |
S max |
Si max |
Ni | Cr | Mo | N | Cu | Others | |
| S31803 | 0.03 | 2 | 0.03 | 0.02 | 1 | 4.5-6.5 | 21.0-23.0 | 2.5-3.5 | 0.08-0.20 | . . . | . . . |
UNS S31803 Duplex Tube Tensile Requirements
| Grade | Tensile strength, min, ksi [MPa] | Yield strength, min ksi [MPa] | Elongation in 2 in., or 50mm, min,% | Hardness, Max Brinell |
| S31803 | 90 [620] | 65 [450] | 25 | 290 |
A789M S31803 Duplex seamless steel pipe
Why choose us
GNEE pipes and tubes have a wide range of applications in many market sectors, including the oil and gas, petrochemical and construction industries. And we can offer different properties for different purposes (e.g. corrosion protection).
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FAQ
Q: Can you send samples?
A: Of course, we can send samples to all over the world, our samples are free, but customers
need to bear the courier cost.
Q: What product information do I need to provide?
A: You need to provide grade, wall thickness, width and quantity you need to buy.
Q: What are the shipping ports?
A: You can choose other ports according to your needs.
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