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Ferralium 255 Round Bars,SD-50, UNS S32550 Round Bars

Calico Metal is a known distributor of Ferralium 255 Round Bar in Mumbai, India to our esteemed clients. Ferralium 255 Bar is a duplex alloy with a high strength to weight ratio with superior abrasion and cavitations resistance. It’s twice the yield strength of Alloy 20, and quite stronger than Duplex 2205. Also referred as Super Duplex UNS S32550, these are quite a cost effective alternative to the materials such as nickel alloys, bronze and brass. These Bars have a ferritic-austenitic microstructure, with a phase balance of approximately 50 percent of ferrite and 50 percent of austenite. The duplex microstructure of Super Duplex Ferralium 255 contributes to the high strength and high resistance to stress corrosion cracking. Meanwhile, by lowering total material weight, you also lower transportation and assembly costs, reducing environmental impacts even further – making these Super Duplex Ferralium 255 rod a genuine material of future.

Ferralium 255 Round Bar is finding a ton of financially savvy applications in the concoction, metallurgical, marine, metropolitan sanitation, oil and gas, plastics, petrochemical, wet phosphoric corrosive, contamination control, paper making and metalworking businesses. It is likewise having great flexibility by method for high exhaustion quality in marine applications.


  • Aerospace – piston engine manifolds
  • Chemical Processing
  • Expansion Joints
  • Food Processing – equipment and storage
  • Petroleum Refining – polythionic acid service
  • Waste Treatment – thermal oxidizers


  • Higher creep stress and rupture properties when compared with 304
  • Ideal for high temperature service
  • Overcomes sensitization and intergranular corrosion concerns
  • Can be used in elevated temperature applications for ASME Boiler and Pressure Vessel Code applications
  • Due to stabilisation the material offers better overall corrosion resistance when compared to 304/304L
  • Excellent mechanical properties

Chemical Composition

Element Content (%)
Chromium, Cr 24 - 27
Nickel, Ni 4.5 - 6.5
Molybdenum, Mo 2.9 - 3.9
Copper, Cu 1.5 - 2.5
Manganese, Mn 1.5 max
Silicon, Si 1 max
Nitrogen, N 0.1 - 0.25
Phosphorus, P 0.04 max
Carbon, C 0.04 max
Sulfur, S 0.03 max
Iron, Fe Remainder

Physical Properties

Properties Metric Imperial
Density 7.8 g/cm3 0.282 lb/in3
Melting point 1399°C 2550°F

Calico Metal Alloys LLP exports their products to countries like UAE, Bahrain, Italy, Indonesia, Malaysia, United States, Mexico, Chine, Brazil, Peru, Nigeria, Kuwait, Jordan, Dubai, Thailand (Bangkok), Venezuela, Iran, Germany, UK, Canada, Russia, Turkey, Australia, New Zealand, Sri Lanka, Vietnam, South Africa, Kazakhstan & Saudi Arabia.

Stainless Steel & Special Alloys Materials