ASTM A790 & UNS S32205 Duplex Stainless Steel Seamless Pipes
ASTM A790 S32205 pipe has a high strength-to-weight ratio and is suitable for structural applications where high strength is required.
ASTM A790 S32205 is economical in the long run because of its long service life, corrosion resistance and low maintenance requirements.
ASTM A790 S32205 pipe has good mechanical properties, such as high tensile strength, excellent toughness and good impact resistance.
These pipes can withstand temperatures from low to high and have good weldability, which means they do not reduce strength and corrosion resistance.
Overall, ASTM A790 S32205 pipes are preferred for many industrial applications due to their excellent corrosion resistance, high strength, good weldability, and wide temperature range.
Chemical Composition
Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
2205 (UNS S31803) | Min Max | -0.03 | -2 | -1 | -0.03 | -0.02 | 21.0 - 23.0 | 2.5 - 3.5 | 4.5 - 6.5 | 0.08 - 0.20 |
2205 (UNS S32205) | Min Max | -0.03 | -2 | -1 | -0.03 | -0.02 | 22.0 - 23.0 | 3.0 - 3.5 | 4.5 - 6.5 | 0.14 - 0.20 |
Mechanical Properties
Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
Rockwell C (HR C) | Brinell (HB) | ||||
UNS S32205 / 2205 | 621 | 448 | 25 | 31 max | 293 max |
Physical Properties
Grade | Density(kg/m3) | Elastic Modulus (GPa) | Mean Co-eff of Thermal Expansion (μm/m/°C) | Thermal Conductivity (W/m.K) | Specific Heat 0-100°C ( J/kg.K) | Electrical Resistivity (nΩ.m) | |||
0-100°C | 0-315°C | 0-538°C | at 100°C | at 500°C | |||||
UNS S32205 / 2205 | 782 | 190 | 13.7 | 14.2 | - | 19 | - | 418 | 850 |
2205 stainless steels Grade specifications
Grade | UNS | Old British | Euronorm | Swedish SS | Japanese JIS | ||
No | BS | En | No | Name | |||
2205 | S31803 / S32205 | 318S13 | - | 1.4462 | X2CrNiMoN22-5-3 | 2377 | SUS 329J3L |
These premium duplex stainless steel seamless pipes are manufactured to meet ASTM A790 standards, ensuring superior performance in corrosive and high-stress environments. The UNS S32205 material offers exceptional strength and excellent resistance to pitting, crevice corrosion, and stress corrosion cracking. Our ASTM A790 compliant pipes provide nearly double the yield strength of conventional austenitic stainless steels, making them ideal for demanding applications in oil and gas, chemical processing, and marine environments. The seamless construction guarantees excellent pressure integrity and reliability. These pipes deliver outstanding value where superior corrosion resistance, high mechanical strength, and long-term durability are essential requirements for critical industrial applications.
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