A789 UNS S31803 and UNS S32205 are two grades of duplex stainless steel that are widely used in various industrial applications. These Duplex S31803 Seamless Pipes are known for their excellent corrosion resistance, high strength, and good weldability. A789 is a specification that covers seamless and welded tubes made from duplex stainless steel.
It is widely used in offshore oil and gas exploration/production and in heat exchangers in petrochemical/chemical processing.
Duplex Steel UNS S31803 Seamless Pipes are widely used in various applications in the industry. These ASTM A790 Duplex Steel S31803 Pipes are made up of a combination of microstructure of austenitic and ferritic grains, which gives them unique properties. These properties include a high resistance to corrosion, excellent strength and toughness, and good weldability.
Super Duplex SAF 2507 is a really strong material with great corrosion resistance.
2507 has good weldability and workability, and it’s widely used in desalination equipment, chemical process pressure vessels, piping and heat exchangers.
Super Duplex 2507 has more than twice the strength of conventional austenitic stainless steels in the annealed condition. Type: Seamless, Welded WT: SCH5-SCH80S
S32750 is used for marine applications, flue gas scrubbing equipment, and pulp & paper mill equipment.
Super Duplex 2507 cannot be strengthened by heat treating. Annealing is performed at 1920¡ãF – 2060¡ãF (1049¡ãC – 1127¡ãC), followed by rapid cooling.
The steel has excellent resistance to chloride stress corrosion cracking, high thermal conductivity, and a low coefficient of thermal expansion.
Super Duplex 2507 is used in environments containing high levels of chlorides or dissolved oxygen, such as seawater cooling, salt evaporation, and desalination, geothermal wells.
The high chromium, molybdenum, and nitrogen levels provide excellent resistance to pitting, crevice, and general corrosion.
Super Duplex tubes for the increasing hostile temperature and operating environments – where maximising operating efficiency demands total product reliability. 2507 Super Duplex Products therefore have very his corrosion cracking resistance and tensile strength.
The steel has excellent resistance to chloride stress corrosion cracking, high thermal conductivity and a low coefficient of thermal expansion. The high chromium, molybdenum, and nitrogen levels provide excellent resistance to pitting, crevice, and general corrosion.
The material is also resistant to chloride stress corrosion cracking, to erosion corrosion, to corrosion fatigue, to general corrosion in acids. This alloy has good weldability and very high mechanical strength.
2507 Super Duplex Stainless Steel was designed for demanding applications which require exceptional strength and corrosion resistance, such as chemical process, petrochemical, and seawater equipment.
Super Duplex are trace amounts of carbon, phosphorus, sulfur, silicon, nitrogen, and copper. It has great general consumption resistance, proposed for applications up to 600¡ã F, and low rate of warm development.
2507 has high resistance to stress corrosion cracking (especially chloride stress corrosion cracking), high energy absorption, high strength, and erosion. Essentially, and the Duplex alloys are a compromise.
2507 is used for oil and gas industry equipment, offshore platforms, heat exchangers, process and service water systems, fire-fighting systems, and injection and ballast water systems.
2507 is used for Chemical process industries, heat exchangers, vessels, and piping, desalination plants, high pressure RO-plant and seawater piping, mechanical and structural components, high strength, corrosion-resistant parts.
This type of steel is excellently resistant to shearing as a result of stress corrosion, high thermal conductivity and a low thermal expansion coefficient.
The high chromium, molybdenum, and nickel levels provide excellent resistance to pitting, crevice, and general corrosion.
Super Duplex stainless steel offers the same advantages as its Duplex counterpart. The main difference between the two is that Super Duplex has a higher chromium and molybdenum content, resulting in increased corrosion resistance.
The 2205 Duplex Stainless Pipe produced in accordance to ASTM A790 specification could be constructed by either a seamless construction or an automatic welding process.
The duplex steels are one type of stainless steels that have ferritic and austenitic phases in their metallurgic microstructure.
If the 22cr Duplex Pipe is to be welded, no filler metal is required to be added to the alloy during its welding process.
Heat and product analysis is to be performed on the SA 789 Alloy 2205 Pipe Material.
All Duplex 2205 Seamless Pipe produced according to the ASTM A789 must be furnished in a heat treated condition.
This heat treatment performed on the Duplex 2205 Pipe must be keeping with accordance to the specified temperature and quench conditions.
The 2205 Duplex Stainless Pipe exhibits magnetic properties in certain environments.
Astm A790 Uns S31803 grade pipes and tubes can be cold-rolled to give them enhanced properties and good resistances in different systems.
