SAF 2507, is a Alleima-owned trademark (Formerly Sandvik Materials Technology) for a 25Cr duplex (ferritic-austenitic) stainless steel. The nominal chemical composition of SAF 2507 is 25% chromium, 7% nickel, 4% molybdenum and other alloying elements such as nitrogen and manganese.[1] The UNS designation for SAF 2507 is S32750 and the EN steel no. is 1.4410. SAF derives from Sandvik Austenite Ferrite.
Typical properties of SAF 2507 duplex stainless steel are:[2]
- excellent resistance to stress corrosion cracking in chloride-bearing environments
- excellent resistance to pitting corrosion 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
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