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Product Name: | Stainless Steel Coil Tubing | Grade: | UNS S31803 |
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Production: | COLD DRAWN | Stainless Type: | DUPLEX STAINLESS STEEL |
Certificate: | ISO9001 | OD Range: | 1/4'' - 1'' |
Length: | 1500M | Shape: | Round |
Package: | Wooden Case | Application: | Heat Exchanger |
High Light: | coiled stainless steel tubing,ss coil tubing |
ASTM A789 UNS S31803 Duplex coiled stainless steel tubing,Grade 2205 Coiled Metal Tubing
Characteristics:
High strength
Resistant to chloride stress corrosion cracking and temperatures up to about 150°C / 302°F
High resistance to chloride pitting and crevice corrosion
High resistance to stress corrosion crashing fatigue and erosion
Low thermal expansion and higher heat conductivity than austenitic steels
Market applications:
Chemical and Petrochemical industry
Oil and gas industry
Seawater desalination plants
Stream vessels
Food processing equipment
Pulp and paper industry
Alloy 2205 is a duplex stainless steel with high general, localized and stress corrosion resistance properties, high strengths and outstanding impact toughness. Developed primarily to combat common corrosion problems. Duplex is superior to 316L or 317L austenitic stainless steels in most corrosive environments. The duplex alloy 2205 structure consist of austenite pools surrounded by continuous ferrite phase and contains approximately 45% ferrite. It is the most widely use grade in the duplex family of stainless steels.
Wst. 1.4462
UNS S31803
Stock program: 6 – 25 mm OD
1/4“ – 1” OD
Specification: ASTM A 789/ASME SA 789
EN 10216-5/NACE MR0175/PED 97/23 EC
NORSOK M-650 MDS R18
Maximum expose temperature: 300°C / 560°F
Chemical Composition:
UNS S31803 | |
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Chemical Element | % Present |
Carbon (C) | 0.0 - 0.03 |
Chromium (Cr) | 21.00 - 23.00 |
Manganese (Mn) | 2.00 max |
Silicon (Si) | 1.00 max |
Phosphorous (P) | 0.0 - 0.03 |
Sulphur (S) | 0.0 - 0.02 |
Nickel (Ni) | 4.50 - 6.50 |
Nitrogen (N) | 0.08 - 0.20 |
Molybdenum (Mo) | 2.50 - 3.50 |
Iron (Fe) | Balance |
Grade |
C max |
Si max |
Mn max |
P max |
S max |
Cr | Ni | Mo | N |
UNS S32750 | 0.030 | 0.8 | 1.2 | 0.030 | 0.015 | 24.0-26.0 | 6.0-8.0 | 3.0-5.0 | 0.24-0.32 |
UNS S31803 | 0.030 | 1.0 | 2.0 | 0.020 | 0.020 | 21.0-23.0 | 4.50-6.50 | 2.50-3.50 | 0.08-0.20 |
UNS S31500 | 0.030 | 1.0 | 1.2-2.0 | 0.030 | 0.030 | 18.0-19.0 | 4.50-5.50 | 2.50-3.50 | 0.05-0.1 |
Physical Properties:
Grade | Y.S.MPa min | T.S.Mpa min | Elongation % | Hardness HRC |
UNS S32750 | 550 | 800 | 15 | 20 |
UNS S31803 | 450 | 620 | 25 | 20 |
UNS S31500 | 440 | 630 | 30 | 20 |
Weight Caculation:
Material | Kg/mtr. | Material | Kg/mtr. |
Stainless steel | 7.90 | C4 | 8.64 |
(Super) duplex | 7.90 | C22 | 8.70 |
200 | 8.89 | C276 | 8.88 |
201 | 8.89 | B2 | 9.22 |
400 | 8.83 | B3 | 9.22 |
600 | 8.42 | Titanium | 4.51 |
601 | 8.06 | Zirconium | 6.50 |
625 | 8.44 | Copper | 8.92 |
800 | 7.94 | Aluminium | 2.70 |
800H | 7.94 | Tungsten | 8.52 |
800HT | 7.94 | Brass | 8.47 |
825 | 8.14 | Carbon steel | 7.80 |
Contact Person: Will Ma
Tel: +86 13918539222