ASTM A276 / ASME SA276 UNS S32750 Round Bar

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Duplex 2507 Bar is a super duplex stainless steel designed for applications which demand exceptional strength and corrosion resistance. Alloy 2507 has 25% chromium, 4% molybdenum, and 7% nickel. This high molybdenum, chromium and nitrogen content results in excellent resistance to chloride pitting and crevice corrosion attack and the duplex structure provides 2507 with exceptional resistance to chloride stress corrosion cracking.

Usage of Duplex 2507 Round Bar should be limited to applications below 600° F (316° C). Extended elevated temperature exposure can reduce both the toughness and corrosion resistance of alloy 2507. Duplex 2507 possesses excellent mechanical properties. Often a light gauge of 2507 material can be used to achieve the same design strength of a thicker nickel alloy. The resulting savings in weight can dramatically reduce the overall cost of fabrication.

Corrosion Resistance

2507 Duplex Bar is highly resistant to uniform corrosion by organic acSuper Duplex 2507 Plateids such as formic and acetic acid. It is alsohighly resistant to inorganic acids, especially if they contain chlorides. Alloy 2507 is highly resistant to carbide-related intergranular corrosion. Due to the ferritic portion of the duplex structure of the alloy it is very resistant to stress corrosion cracking in warm chloride containing environments. Through additions of chromium, molybdenum and nitrogen localized corrosion such as pitting and crevice attack are improved. Alloy 2507 has excellent localized pitting resistance.

Characteristics

• High resistance to chloride stress corrosion cracking
• Superior resistance to chloride pitting and crevice corrosion
• Suggested for applications up to 600° F
• Combination of properties given by austenitic and ferritic structure
• Good weldability and workability
• Good general corrosion resistance

Applications

• Desalination Equipment
• Chemical process pressure vessels, piping and heat exchangers
• Marine Applications
• Flue Gas Scrubbing Equipment
• Offshore Oil production/technology

Also see

• Duplex Steel 2205 Bar
• Duplex Steel 2304 Bar
• Duplex Steel 2202 Bar
• UNS S32760 Round Bar
• UNS S32205 Round Bar
• UNS S31803 Round Bar

Chemical Composition

Physical Properties

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.

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