Alleima SAF 2507 – Seamless tube, super duplex UNS S32750

Alleima SAF 2507 is a super-duplex (austenitic-ferritic) stainless steel for service in highly corrosive conditions. The grade is characterized by:

• Excellent resistance to stress corrosion cracking (SCC) in chloride-bearing environments
• Excellent resistance to pitting and crevice corrosion
• High resistance to general corrosion
• Very high mechanical strength
• Physical properties that offer design advantages
• High resistance to erosion corrosion and corrosion fatigue
• Good weldability

MATERIAL

• UNS S32750
• EN 1.4410

STANDARDS

• UNS: S32750
• EN Number: 1.4410
• EN Name: X2CrNiMoN25-7-4
• SS: 2328

PRODUCT STANDARDS

• Seamless tube and pipe: EN 10216-5
• Seamless and welded tube and pipe: ASTM A789, A790
• Flanges: ASTM A182
• Fittings: ASTM A182 (ASTM A815 applied for)
• Plate, sheet and strip: ASTM A240, EN 10088-2
• Bar steel: ASTM A479, EN 10088-3
• Forged billets: EN 10088-3

APPROVALS

• ASME Boiler and Pressure Vessel Code, Section VIII, div. 1 (no approval as plate, but according to ASME UG-15 the design values for seamless tube may be used for plate)
• ASME B31.3 Chemical Plant and Petroleum Refinery Piping
• VdTÜV-Werkstoffblatt 508
• NACE MR0175/ISO 15156-3 (cracking-resistant CRAs for H2S-containing environments in oil and gas production)