Standards：AISI 329 ASTM A789 / A790 Grade（UNS）：S32900 Type：Duplex Stainless steel
329 duplex stainless steel has good pitting corrosion resistance, crevice corrosion resistance, oxidation resistance and stress corrosion resistance in chlorine containing water. It is a heat-resistant steel alloy.
329 stainless steel is a kind of high alloy duplex stainless steel. It is often used in heat exchanger and chemical industry in chlorine environment.
Fast cooling at 1010 ～ 1150 ℃ for solid solution
|329 stainless steel||temperature, °F||70||212||932|
|Coefficient of thermal expansion, in/in°F x 10-6||–||9.2||–|
|Thermal conductivity ft2 • hr • °F||–||9.4||12.4|
|Elastic modulus, psi x 106||29||–||–|
* 70°F to indicated temperature
|329 stainless steel||temperature, °F||-425||-320||-100||70||400||800||1200|
|ultimate tensile strength, ksi||250||230||150||90||70||66||48|
|yield strength, ksi||100||70||50||35||23||19||15.5|
Duplex stainless steel is a kind of stainless steel composed of ferrite and austenite. The ferrite content is about 50%, and the austenite content is about 50%. This kind of steel has the characteristics of both austenitic stainless steel and ferritic stainless steel.
Duplex stainless steel pipe is one of the main products of our company. It has good corrosion resistance and welding performance. Widely used in steel, smelting, petroleum, chemical, marine equipment and other industries.