Super Duplex 2507

Duplex 2507 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.

2507 Duplex is highly resistant to uniform corrosion by organic acids 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.

High resistance to chloride stress corrosion cracking

· High Strength

· Superior resistance to chloride pitting and crevice corrosion

· Good general corrosion resistance

· Suggested for applications up to 600° F

· Low rate of thermal expansion

· Combination of properties given by austenitic and ferritic structure

· Good weldability and workability

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