ASTM A789 UNS S31803 Duplex Tube
GNEE has a complete inventory of ASTM A789 UNS S31803 Duplex Stainless Steel Seamless Pipes and supplies ASTM A789 UNS S31803 Duplex Stainless Steel Welded Pipes, Duplex stainless steel has the characteristics of both austenitic and ferritic stainless steels.
A 789 UNS S31803 Duplex Steel Pipe has better stress corrosion resistance in chlorine neutral solution and H2S than 304L, 316L austenitic stainless steel and 18-5Mo type duplex stainless steel. A 789 UNS S31803 stainless steel pipe is particularly suitable for the temperature range of -50°F/+600°F.
The microstructure of duplex A 789 UNS S31803 pipe is about 50% ferrite and 50% austenite. Therefore, the properties inherited from both categories make Duplex A 789 UNS S31803 Seamless Pipe corrosion resistant with high temperature strength very suitable for use in industries such as food processing, oil field pipelines and heat exchangers, and flue gas desulfurization.
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ASTM A789 UNS S31803 Polished Pipe Product information
ASTM A789 UNS 31803 Duplex Stainless Tubes Specifications
| Standard | ASTM A789/A789M, ASME SA789 |
| Seamless pipe & Tube Size | 1/2" to 8" |
| Welded pipe & Tube Size | 6" to 24" |
| Outer Diameter | 6.0-630mm |
| Schedules | 10s, 20, 40s, 40, 60, 80s, 80, 100, 120, 140, 160, XXH |
| Wall Thickness | 1mm to 50mm |
| Shape | Round |
| Length | Single random length/ Double random length or as customer's actual request Max length 25000mm |
| Packaging | Loose / Bundle / Wooden Pallet / Wooden box-a / Plastic Cloth Wraps / Plastic End Caps / Beveled Protector |
ASTM A789 UNS S31803 tubing Chemical Composition Requirements
| C | ≤0.030 |
| Mn | ≤2.00 |
| P | ≤0.030 |
| S | ≤0.020 |
| Si | ≤1.00 |
| Ni | 4.5-6.5 |
| Cr | 21.0-23.0 |
| Mo | 2.5-3.5 |
| N | 0.08-0.20 |
ASME SA 789 UNS S31803 Polished Pipe Mechanical Properties
| Tensile Strength,min. | Yield Strength,min. | Elongation,min. | Hardness Brinell, max |
|---|---|---|---|
| Mpa | Mpa | % | HB |
| 620 | 450 | 25 | 290 |
Duplex Steel ASTM A789 UNS S31803 Round Pipe
Why choose us
Our 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
1.Will you deliver the goods on time?
Yes,we promise to provide best quality products and delivery in time no matter if the price change lot or not, Honesty is our company's tenet.
2.How can I get your quotation as soon as possible?
The email and fax will be checked in 24 hours, meanwhile hours Please tell us the order information about quantity,Specification(steel type, material, size )and destination port, you will get the latest price.
3.How about the sample if i need?
The sample will be offered for free if you need, but the freight will be covered by our customer. If we have cooperation, the freight will be covered by our company.
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