Duplex S31803 Seamless Pipe
The ASTM A789 UNS S31803 tubing refers to seamless and welded tubing manufactured in accordance with ASTM A789/ASTM A1789M, 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.
| Weight % | C | Si | Mn | S | P | Cr | Ni | Mo | N |
| Min. | | | | | | 21,00 | 4,50 | 2,50 | 0,10 |
| Max. | 0,030 | 1,00 | 2,00 | 0,015 | 0,030 | 23,00 | 6,50 | 3,50 | 0,22 |
NORSOK: N: 0,14 – 0,20%
Product Standards: EN 10088-3, ASTM A276, ASTM A479, ASTM A182–11A
(Chemical composition and mechanical properties only)
Approvals: NACE MR0175, NORSOK M650, NORSOK M630 MDS D41/D43/ D44/ D45/ D47
| | Yield strength Rp0.2,
MPa | Tensile strength Rm,
MPa | Elongation
[%] | Hardness
[HB] | Impact, Charpy-V, -46ºC
[J] | Pre |
| BAR | ≥ 450 | 650 – 880 | ≥ 25 | ≤ 270 | ≥ 45 | ≥ 34 |
| PLATE CR (COIL) | ≥ 500 | 700 – 950 | ≥ 25 | | ≥ 45 | ≥ 34 |
| PLATE HR (COIL) | ≥ 480 | 700 – 950 | ≥ 25 | | ≥ 45 | ≥ 34 |
| PLATE (QUARTO) | ≥ 480 | 680 – 840 | ≥ 25 | | ≥ 45 | ≥ 34 |
Product Pictures
Packaging and Delivery
FAQ:
Q: Are you trading company or manufacturer?
A: We are a professional steel pipes materials manufacturer.
Q: How long is your delivery time?
A: Generally it takes 7-14 days if the goods are in stock or 30-60 days if there is no stock, this mainly depends on quantity.
Q: Do you provide free sampleas?
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
Q: What is your terms of payment?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact us.
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Duplex S31803 Seamless Pipe Suppliers Images
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