Duplex S32750 Stainless Steel Plate 2507 SS Plate ASTM A240 0.6 - 40.0mm Hot Rolled NO.1 2B Finishing

Duplex S32750 Stainless Steel Plate 2507 SS Plate ASTM A240 0.6 - 40.0mm Hot Rolled NO.1 2B Finishing

Super Duplex 2507 Stainless Steel Plate

UNS S32750

UNS S32750, commonly known as Super Duplex 2507, is very similar to UNS S31803 Duplex. The difference between the two is the contents of chromium and nitrogen are higher in the Super Duplex Grade which in turn creates higher corrosion resistance as well as a longer lifespan. Super Duplex is composed of between 24% to 26% chromium, 6% to 8% nickel, 3% molybdenum, and 1.2% manganese, with the balance being iron. Also found in Super Duplex are trace amounts of carbon, phosphorus, sulfur, silicon, nitrogen, and copper. Benefits include: good weldability and workability, a high level of thermal conductivity and low coefficient of thermal expansion, high resistance to corrosion, fatigue, high resistance to pitting and crevice corrosion, high resistance to stress corrosion cracking (especially chloride stress corrosion cracking), high energy absorption, high strength, and erosion. Essentially, the Duplex alloys are a compromise; possessing some of the ferritic stress corrosion cracking resistance and much of the superior formability of the common austenitic stainless alloys, more cost effectively than the high nickel alloys.

Products partially or completely constructed of Super Duplex include:

• Cargo tanks
• Fans
• Fittings
• Heat exchangers
• Hot water tanks
• Hydraulic piping
• Lifting and pulley equipment
• Propellers
• Rotors
• Shafts
• Spiral wound gaskets
• Storage vessels
• Water heaters
• Wire

Applications of S32750 Super Duplex Stainless Steel

Alloy 2507 (UNS S32750) is a super duplex stainless steel with 25% chromium, 4% molybdenum, and 7% nickel designed for demanding applications which require exceptional strength and corrosion resistance, such as chemical process, petrochemical, and seawater equipment. The steel has excellent resistance to chloride stress corrosion cracking, high thermal conductivity, and a low coefficient of thermal expansion. The high chromium, molybdenum, and nitrogen levels provide excellent resistance to pitting, crevice, and general corrosion.

The applications of S32750 super duplex stainless steel are:

• Desalination Equipment.
• Chemical process pressure vessels, piping and heat exchangers.
• Marine Applications.
• Flue Gas Scrubbing Equipment.
• Pulp & Paper Mill Equipment.
• Offshore Oil production/technology.
• Oil and gas industry equipment.

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