We are dedicated to offering a wide range of S31803 duplex steel pipe and tube in high quality raw material. S31803 duplex stainless steel pipes and tubes feature excellent flow characteristics with higher strength and better resistance to stress corrosion cracking. Therefore, our UNS S31803 duplex steel pipes have high strength and impact resistance, combined with superior capabilities to resist pitting and crevice corrosion. The positive identification of the material is carried out in all the raw materials acquired in Aleacion Tubos. These duplex steel pipes can be used for high temperature and pressure applications. We can offer these tubes in different dimensional specifications based on clients' requirements. Our duplex and stainless steel tubing can be easily welded to the system for a leak-proof joint.
S31803 duplex stainless steel is a cost-effective solution for many applications where 300 series stainless steels are susceptible to chloride corrosion cracking. Stress corrosion cracking occurs when stainless steels are subjected to tensile stresses, while in contact with solutions containing chlorides. Increasing temperatures also increase the susceptibility of stainless steels to stress corrosion cracking. The combination of chromium, molybdenum and nitrogen imparts 2205's good resistance to chloride pitting and crevice corrosion. The high chromium, molybdenum and nitrogen content of 2205 provides superior corrosion resistance to common stainless steels such as 316L and 317L in most environments.
UNS S31803 Stainless Steel Duplex Pipe and Tube Specification
Standards: ASTM A790 / ASME SA790, ASTM A789 / ASME SA A789
seamless pipes and tubes Sizes: 1/2&"NB - 8 GG" NB
Welded Pipes and Tubes Sizes: 6&"NB - 24 GG" NB
Outer diameter: 6.0-630mm
Thickness: 0.3mm - 50mm
Schedule: SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS
Types: Seamless / EFW / Fabricated, Welded, ERW
Length: Random Length, Double Random and Required
Finish: plain end, beveled end, treated
S31803 Duplex Steel Pipes and Tubes Chemical Composition
| Grade | C | Mn | Yes | P | S | Cr | Mo | Neither | N | Faith |
| S31803 | 0.030 max | 2.00 max | 1.00 max | 0.030 max | 0.020 max | 22.0 – 23.0 | 3.0 – 3.5 | 4.50 – 6.50 | 0.14 – 0.20 | 63.72 min |
Mechanical Properties of Duplex Steel S31803 Pipes and Tubes
| Grade | Density (g / cm 3) | Density (lb / in 3) | Melting point (° C) | Melting point (° F) |
| S31803 | 7.805 | 0.285 | 1420 – 1465 | 2588 – 2669 |
Equivalent Standard for UNS S31803 Duplex Steel Pipes and Tubes
| Standard | duplex 2205 |
| UNS | S31803 |
| WERKSTOFF NR. | 1.4462 |
Duplex Steel S31803 pipe and tube is the main pipe of oil and chemical industry, medicine, food, sewage treatment, boiler tube and heat exchanger. It is produced by hot and cold rolling. The glossy surface is the biggest advantage and is mainly used in buildings, elevators, railings, precision equipment, etc.
ASTM A789 / A790 S31803 Stainless Steel Duplex Pipe and Tube Standard Packing
We can give peeled packing, in packing bundle, packing box, wooden protection on both sides of the pipes and conveniently protected for dignified sea delivery. According to the customer's requirements.
UNS S31803 Stainless Steel Duplex Pipe and Tube Inspection and Testing:
Tensile strength, yield strength, elongation, combustion, flattening, bending, hardness, impact test), chemical composition inspection, non-destructive testing, hydrostatic testing.
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