Super Duplex Sheets provide an impressive combination of corrosion resistance and strength, thanks to their high content of chromium, molybdenum, and nitrogen which increases resistance against pitting, crevice corrosion cracking, stress corrosion cracking in chloride-rich environments such as seawater.
Grade 2507 is frequently employed in harsh environments like desalination plants, seawater systems and petrochemical production equipment; however it's also ideal for many pulp and paper applications.
What is super duplex material?
Super duplex material is a combination of austenitic and ferritic stainless steels with dual microstructure. It contains high levels of chromium, nickel and molybdenum for improved corrosion resistance against pitting corrosion; additionally it has higher tensile strengths than traditional austenitic grades.
Super Duplex 2507's exceptional resistance to stress corrosion cracking makes it well-suited for marine and subsea applications, while its superior durability extends equipment lifespan, thus lowering lifetime costs.
Super duplex alloys can be welded easily with conventional techniques such as gas metal arc welding (GMAW) and shielded metal arc welding (SMAW), however controlled heat input and interpass temperatures must be carefully managed in order to avoid the formation of undesirable phases and postweld annealing may also be required to restore integrity in the weld area.
Is super duplex better than 316?
2507 super duplex sheets and plates are durable enough for even the harshest industrial environments, making them an excellent investment in terms of cost-cutting maintenance costs by eliminating frequent replacements or repairs - an invaluable benefit for companies that wish to increase efficiency while saving money in the long run.
Lean duplex grades like 316 combine austenitic and ferritic phases for greater strength than standard austenitic grades such as 304 or 316L, boasting double the tensile strengths compared to them.
316 grade steel boasts excellent corrosion and chloride stress-corrosion cracking resistance, making it suitable for use in piping systems and desalination plants. Furthermore, its easy formability allows it to be worked into complex shapes easily.
Which is the best grade of stainless steel?
As each grade of stainless steel offers different properties and applications, understanding these grades' advantages is critical when selecting one for your project.
Grade 316 stainless steel offers exceptional resistance to corrosion and has high tensile strength, as well as being non-reactive, making it the ideal material for food processing facilities.
Grade 2507 SS stands out as another impressively corrosion resistant grade of duplex stainless steel with superior resistance to chloride stress corrosion cracking and pitting, making it perfect for harsh environments like offshore oil & gas platforms or desalination plants. With higher yield strength than grade 304 or other austenitic varieties such as grade 310.
Super duplex sheets sizes
Super duplex stainless steel sheets provide excellent pitting and crevice corrosion resistance in environments with chlorides, as well as good resistance to stress corrosion cracking, high mechanical strength, and easy machining capabilities.
Super duplex sheets come in all sorts of sizes, shapes and finishes - they can be cold or hot rolled, pickled and annealed, with or without temper or coating options - and both welded and unstressed conditions available.
Super duplex 2507 plates have an array of uses, from ballast water and injection systems, fire-fighting equipment, heat exchangers, vessels and oil refinery heat exchangers to FGD setups and chemical production facilities. Their combination of austenite and ferrite makes this alloy particularly suited to harsh environments.
Duplex Plate grade
Duplex plate is widely used in industrial settings due to its exceptional corrosion resistance rate. This allows it to withstand harsh environments without needing as much maintenance or replacement in terms of replacement costs or upkeep requirements.
Grade 2205 (UNS S32205 / S31803) is one of the most widely used duplex grades. It offers an ideal balance between strength and resistance to SCC, pitting, crevice corrosion, and sulphide stress corrosion cracking - essential features in chemical processing applications, oil and gas exploration/production operations, marine use applications, desalination facilities and desalination plants.
Grade 2507 (UNS S32750 / S32760) boasts a higher PREN for pitting corrosion, making it suitable for highly corrosive offshore marine and desalination environments. Furthermore, this grade boasts lower nickel content to increase cost effectiveness.