GNEE is a renowned supplier of stainless steel seamless pipes. We sell over 10,000 tons of stainless steel seamless pipes annually, with customers in more than 80 countries. Our stainless steel seamless pipes are widely used in mining, energy, petrochemicals, chemicals, food processing plants, paper mills, natural gas, and fluid industries.
ASTM A789 UNS S32205 duplex stainless steel seamless water treatment pipe is a high-strength, corrosion-resistant pipe. The UNS S32205 duplex stainless steel pipes we supply feature a microstructure with nearly equal proportions of austenite and ferrite after appropriate heat treatment. They exhibit superior resistance to stress corrosion cracking compared to SS304 and SS316L. In most environments, SS2205 also demonstrates better general corrosion resistance than SS316L. Additionally, the 0.2% yield strength of SS2205 is approximately twice that of conventional austenitic stainless steels.
| STANDARDS | |||||
| INDUSTEEL TRADEMARKS | UNS | ASTM | EURONORMS EN | SUS | |
| S31803/S32205 | 2205 | 1.4462 X2CrNiMoN22-5-3 |
SUS 329J3L | ||
Chemical Properties:
| C | Mn | Si | P | S | Cr | Mo | Ni | N | |
| 2205 (S31803) |
0.03 max |
2.0 max |
1.0 max |
0.03 max |
0.02 max |
min: 21.0 max: 23.0 |
min: 2.5 max: 3.5 |
min: 4.5 max: 6.5 |
min: 0.08 max: 0.20 |
| 2205 (S32205) |
0.03 max |
2.0 max |
1.0 max |
0.03 max |
0.02 max |
min: 22.0 max: 23.0 |
min: 3.0 max: 3.5 |
min: 4.5 max: 6.5 |
min: 0.14 max: 0.20 |
Mechanical Properties:
| Grade | Tensile Strength ksi (min) |
Yield Strength 0.2% ksi (min) |
Elongation % | Hardness (HB) MAX |
| 2205 | 90 | 65 | 25 | 217 |
Physical Properties:
| Density lbm/in3 |
Electrical Resistivity mW•in |
Thermal Conductivity (BTU/hr•ft•°F) |
Heat Capacity BTU/lbm•°F |
Electrical Resistivity (in x 10-6) |
|
| at 68°F | 0.278 | 27.6 | 8.7 | 0.112 | 33.5 |
| at 212°F | 26.1 | 9.2 | 0.119 | 35.4 | |
| at 392°F | 25.4 | 9.8 | 0.127 | 37.4 | |
| at 572°F | 24.9 | 10.4 | 0.134 | 39.4 |
Heat Treatment:
1, Annealing temperature range is 1868 to 2012°F (1020 to 1100°C)
2, Cannot be hardened by heat treatment – but Duplex 2205 does work-harden
3, Special consideration is needed to compensate for a higher coefficient of thermal expansion to avoid warping and distortion
Applications:
1, Chemical processing, transport and storage – pressure vessels, tanks, piping, and heat exchangers
2, Oil and gas exploration and processing equipment – piping, tubing, and heat exchangers
3, Marine and other high chloride environments
4, Effluent scrubbing systems
GNEE has nearly 18 years of experience in seamless stainless steel pipe production. Every pipe undergoes dimensional, surface, PMI, eddy current, and hydrostatic tests. Only high-quality pipe is packaged and delivered to customers worldwide. Our pipe offerings cover both imperial and metric sizes, with outer diameters ranging from 1.58 mm to 108 mm. Special sizes are also available. FILET pipes are available in straight or U-bend lengths up to 30 meters. Mail:es@gescosteel.com
Grades: 304/304L, 304H, 316/316L, 316H, 317L, 321, 310S (2520), 347H, S31803/S32205, S32750, S32760, S32304, 904L
Specifications: ASTM A213, A270, A789, A790, GB/T13296, DIN17458, EN10216-5
Outer Diameter Range: 1.58mm – 108mm
Thickness: 0.38mm – 5.18mm
Length: Maximum 25mm (U-bend compatible)
Surface Treatment: A&P, BA, EP