What Are Super Duplex Steels 2507 Steels?

Super Duplex Steel 2507 is an exceptionally corrosion-resistant alloy composed of austenitic and ferritic stainless steels combining superior properties of each. Packed with chromium, nickel, molybdenum and nitrogen for increased chloride stress corrosion cracking resistance as well as mechanical strength benefits, Super Duplex is widely utilized in aggressive environments like seawater applications, chemical processing plants or oil and gas industries for its superior corrosion-resistance and excellent mechanical properties.

Super Duplex Stainless Steel 2507, also known as UNS S32750, offers exceptional corrosion resistance due to its high chromium, molybdenum, and nitrogen content. It withstands harsh environments including those with acidic, chloride-containing, and corrosive substances, making it ideal for offshore and marine applications. Its resistance to pitting and crevice corrosion surpasses that of conventional stainless steels, ensuring longevity in demanding conditions.

Duplex Steel Bars

Due to its strength and work-hardening properties, Super Duplex 2507 presents unique challenges regarding machinability. This necessitates special tools and techniques to reduce tool wear while keeping dimensions accurate. However, even with its challenging machining properties, Super Duplex 2507 can still be machined successfully using adequate tooling and lubrication, making it suitable for various industrial applications.

Super Duplex 2507's weldability is another key characteristic, determining both ease and quality in joining components together. While its weldability characteristics are good, precaution must be taken during welding to prevent damaging phases like the Sigma phase from forming; appropriate filler materials, welding procedures and post-weld heat treatment techniques all help retain mechanical properties and corrosion resistance in joints while adding to structural integrity of fabricated parts.

Super Duplex Stainless Steel 2507 finds wide use across industries such as chemical processing, oil and gas production and desalination plants. Due to its superior corrosion resistance combined with its strength and excellent mechanical properties, Super Duplex 2507 makes an excellent material choice for components exposed to aggressive environments, while industries like pulp & paper production, pharmaceutical production and power generation also find great benefit in using it in equipment or infrastructure with which corrosion protection and durability is a top priority.

Super Duplex Stainless Steel 2507 can be seen everywhere from pipe systems and pressure vessels, heat exchangers and storage tanks in industrial settings to offshore platforms and subsea pipelines in high pressure oil refineries, as its corrosion resistant nature allows it to tolerate both aggressive fluids as well as high pressure environments. Furthermore, chemical processing equipment, valves and fittings fabricated using Super Duplex 2507 provide reliable performance even under challenging operating environments.

Apple Steels is a reputable manufacturer and supplier of Super Duplex Steel 2507 in Mumbai, India. Super Duplex Steel 2507 is a highly sought-after alloy combining austenitic and ferritic stainless steels, ideal for applications in aggressive environments such as chemical processing and oil and gas industries.

Manufacturing Process Of Super Duplex Steel Bars

Casting

Melting and Casting

Steel and alloying metals are loaded into an electric arc furnace. Once in the furnace, the metal is heated to a specific temperature above its melting point, usually in excess of 2800°F.

Forming Round Bar

Forming

Most cast steel is formed by hot rolling—the slab, bloom, or billet is heated and passed through large rollers, stretching out the steel into a longer, thinner form.

Heat Treatment

Heat treatment

Heat treatment strengthens rolled Super Duplex Steel by recrystallizing the deformed microstructure. Most Super Duplex Steel is heat treated by annealing.

Descaling

Descaling

A rolled piece of Super Duplex Steel acquires a layer of oxidized “mill scale,” which needs to be washed away to restore a shiny surface finish.

Cutting Round Bar

Cutting or Machining

Super Duplex Steel is cut to a specified shape and size. The Super Duplex Steel can be sheared with circular knives, sawed with high-speed blades, or blanked with punches.

Specification Of Super Duplex Steel 2507 Rods

Standards : ASTM A276 / ASME SA276
Dimensions : EN, DIN, JIS, ASTM, BS, ASME, AISI
Wire : Thickness starting from 0.05mm
Round bar size : Diameter: 3-~800mm
Hex Bar size : 2-100mm A/F
Flat bar size : Thickness: 2 -100mm / Width: 10 to 500mm
Square bar size : 4 to 100mm
Rectangular Bars Size : 33 x 30mm to 295 x 1066mm
Hollow Bar : 32mm OD x 16mm ID to 250mm OD x 200mm ID
Tolerance : H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients’ requirements
Finish : Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish

Types Of Super Duplex Steel Bars, Round Bars

Super Duplex Steel Round Bar

Round Bar

Super Duplex Steel Hex Bar

Hexagonal Bar

Super Duplex Steel Square Bar

Square Bar

Other Types Of Super Duplex Steel Rods

  • Super Duplex Steel Precision Round Bars
  • Super Duplex Steel 2507 Polished Bar
  • UNS S32750 Bright Round Bars
  • Super Duplex Steel Hot Rolled Bar
  • ASTM A276 Super Duplex Steel Forged Bar
  • UNS S32760 Round Bar
  • Super Duplex Steel 2507 Cold Drawn Bar
  • Super Duplex Steel Forged Bar
  • Super Duplex Steel Rectangular Bar

Super Duplex Steel 2507 Bars Equivalent Grades

STANDARD WERKSTOFF NR. UNS
Super Duplex S32750/S32760 1.4410 S32750 / S32760

Chemical Composition of Super Duplex Steel Bars

Grade C Mn Si P S Cr Mo Ni N Fe
S32750 0.030 max 1.20 max 0.80 max 0.035 max 0.020 max 24.00 – 26.00 3.00 – 5.00 6.00 – 8.00 0.24 – 0.32 58.095 min
S32760 0.05 max 1.00 max 1.00 max 0.030 max 0.010 max 24.00 – 26.00 3.00 – 4.00 6.00 – 8.00 0.20 – 0.30 57.61 min

Mechanical Properties of Super Duplex Steel Bars

Element S32760
0.2% Proof Stress (N/mm2 ) [ksi] minimum 550 [79.8]
Ultimate Tensile Strength (N/mm2) [ksi] minimum 750 [108.8]
Elongation (%) minimum 25
Reduction of Cross Section Area (%) minimum 45
Hardness (HBN) 270max

Super Duplex Steel Bars Technical Information

Super Duplex Steel Rods Industrial Application

Electrical Industry

Automotive Industry

Construction Industry

Defence Industry

Pharmaceutical Industry

Petroleum Industry

Petrochemical Industry

Milk & Dairy Industry

Export & Supply Destination of Super Duplex Steel 2507 Bars

Austria, Azerbaijan, Belarus, Belgium, Bulgaria, Croatia, Cyprus, Czechia/Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Moldova, Monaco, Netherlands, Norway, Poland, Portugal, Romania, Russia, Serbia, Slovakia, Spain, Sweden, Switzerland, Turkey, Ukraine, United Kingdom.

Afghanistan, Armenia, Azerbaijan, Bahrain, Bangladesh, Bhutan, British, China, Egypt, Hong Kong, India, Indonesia, Iran, Iraq, Israel, Japan, Jordan, Kuwait, Kyrgyzstan, Lebanon, Macau, Malaysia, Maldives, Mongolia, Myanmar, Nepal, North Korea, Oman, Philippines, Qatar, Russia, Saudi Arabia, Singapore, South Korea, Sri Lanka, Taiwan, Thailand, Turkey, United Arab Emirates, Vietnam.

Algeria, Angola, Botswana, Burkina Faso, Burundi, Cameroon, Central African Republic, Egypt, Eswatini, Ethiopia, Gambia, Kenya, Liberia, Libya, Madagascar, Mauritania, Mauritius, Morocco, Mozambique, Namibia, Niger, Nigeria, Rwanda, Senegal, Seychelles, South Africa, Tanzania, Tunisia, Uganda, Zambia, Zimbabwe.

Antigua and Barbuda, Bahamas, Barbados, Belize, Canada, Costa Rica, Cuba, Dominica, Dominican Republic, El Salvador, Grenada, Guatemala, Haiti, Honduras, Jamaica, Mexico, Nicaragua, Panama, Saint Lucia, Saint Vincent and the Grenadines, Trinidad and Tobago, United States of America, Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Guyana, Paraguay, Peru, Suriname, Uruguay, Venezuela.