What is a duplex round bar?
This bar comprises austenitic and ferritic grades of stainless steel for superior corrosion resistance. A duplex round bar uses a nitrogen-enhanced composition to show top-notch weldability, yield strength, and machinability. Grade 2205 is the most widely used DSS bar. It comprises chromium and nickel in proportions of 22% and 5%. Buyers can acquire a DSS rod with peeling, annealing, polishing, grinding, etc.
What are the applications of DSS rods?
The preferred usesof a DSS bar are heat-based applications like heat exchangers, boilers, condensers, exhausts, and cooling towers. A DSS round bar also works in power generation, fertilizers, and chemical processing.Resistance to rust, cracking, and pitting are beneficial in flue gas desulfurization, bleaching, and oil field piping.
Specification of duplex round bar
|ASTM A276 / A182||10mm - 200mm||1/8" - 2"|
|2 meters to 7.5 m ( 8 ft - 24 ft), as per requirement||Cold (bright) drawn, smooth turned, hot rolled, centreless ground, peeled, hot rolled annealed, Bright, slit rolled edge, polish, grinding||Round bars, flat bars, square bars, hex bars|
What is the demand for a duplex stainless steel round bar in the market?
DSS bars are in high demand, with grade 2205 occupying almost 80% of the market. A dss square bar gets used in core sectors like manufacturing and construction. The popularity stems from its excellent chemical properties like sulfide resistance and strength. Dealing with a competent supplier with a sizable portfolio of high-quality DSS rods ensures consistent, timely delivery. It meets unique customer demands for additional heat treatments and finishes.
Types of DSS rod
Duplex stainless steel rod
Duplex round bar
DSS forged bar
Duplex bright bar
How does testing an astm a276 duplex steel square bar ensure quality?
Industry practice is to subject astm a276 DSS bars to tensile and hardness testing, radiography, spectrometry, and positive material identification (pmi). Manufacturers also check the quality of a DSS rod through tests for pitting resistance and intergranular corrosion (igc).
Chemical composition of duplex stainless steel bar
How does the composition of duplex steel bars affect their strength and resistance to wear and corrosion?
These bars deliver corrosion resistance and tolerance for wear and tear. The microstructure of a DSS bright bar comprises austenitic and ferrite grades in equal proportions, lending it resistance to chlorides. A DSS square bar can resist stress-propagated cracking, pitting,and crevice erosion.
Mechanical properties of duplex rod
|Grade||% Elongation||YS (MPa)||Hardness(BHN)||UTS (MPa)|
|S31803||25 min.||450 min.||293 max.||620 min.|
What is the unique blend of materials used in asme sa276 duplex bars?
These products combine chromium, nickel, and molybdenum with small amounts of silicon, manganese, phosphorus, carbon, and sulphur. A DSS cold drawn bar benefits from these elements: increased strength, toughness, and corrosion resistance at high temperatures. The amounts are usually 22% chromium, 3% molybdenum, and up to 5% nickel.
Equivalent grade of DSS bright bar
|Duplex||1.4462||S31803 / S32205|
Tolerance of DSS rods
|Different Manufacturing Types||ISO Tolerance|
|UNS S31803 Cold Drawn and Ground Bar||h8- h9- h10- h11|
|Cold Drawn and Polished Duplex 2205 UNS S32205 Bar||h8- h9- h10- h11|
|2205 Duplex Steel Peeled and Ground Bar||h9- h10- h11|
|UNS S31803 Peeled and Polished Round Bar||h11, h11-DIN 1013|
Applications of DSS bars