2507 is a higher level than 304
2507 duplex stainless steel UNS S32750 DIN/EN 1.4410? F53? SAF 2507
It is a ferrite-austenitic stainless steel Bulk (duplex) stainless steel, which combines the most beneficial properties of many ferritic steels and austenitic steels, has excellent resistance to pitting corrosion, crevice corrosion and uniformity due to its high chromium and molybdenum content. The ability to corrode. The two-way microstructure ensures that the steel has a high ability to resist stress corrosion cracking and has high mechanical strength.
Stainless steel is used in the oil and gas industry; offshore Shipotian oil platforms (heat exchanger tubes, water treatment and water supply systems, fire protection systems, sprinkler systems, water stabilization systems; petrochemical equipment; desalination (desalination) equipment (and high-pressure pipes and seawater pipes in equipment); both high strength and Mechanical and structural components that require high corrosion resistance; combustion (waste) gas purification equipment. Main ingredients: 25Cr-7Ni-4Mo-0.27N
National standards:
ASTM/ASME : A240 - UNS S32750
EURONORM: 1.4410 - X2CrNiMoN25-7-4
AFNOR: Z3 CN 25.06 Az
DIN/EN 1.4410, ASME SA-240
Chemical composition:
C≤0.03,
Si≤0.80,
Mn≤1.2,
Cr: 24-26,
Ni: 6-8,
S≤0.02,
P≤0.035,
Mo: 3-5,
N: 0.24-0.32
Application fields: pulp and paper industry, seawater desalination, flue gas purification, heat exchanger, chemical tanker piping system, seawater System etc.