2507 Stainless Steel(UNS S32750/DIN W. Nr. 1.4410)

2507 Stainless Steel(UNS S32750/DIN W. Nr. 1.4410)
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Features

2507 is a super duplex stainless steel with high alloy content, giving it superior corrosion resistance and strength compared to 2205 steel. The material avoids pitting, crevice corrosion, and chloride stress corrosion cracking. When exposed to diluted sulfuric acid contaminated with chloride ions, 2507 demonstrates better corrosion resistance compared to 904L, which is a metal specially designed to resist concentrated sulfuric acid.

Thanks to 2507’s low carbon content, the risk of carbide precipitation at the grain boundaries during heat treatment is significantly lowered. This also makes it more resistant to carbide-related intergranular corrosion.

However, 2507 is not suitable for applications in which it will be exposed to temperatures greater than 300℃. Its yield strength is about twice that of conventional austenitic stainless steels.

Applications

Chemical processing industry piping, vessels and heat exchangers; desalination plant seawater piping; oil and gas industry equipment; power plant flue gas desulfurization systems, scrubber systems and absorber towers; and chemical tankers.

Form ASTM
Rod, bar and shape A 276, A 484
Plate, sheet and strip A 240, A 480
Seamless and welded pipe A 790, A 999
Seamless and welded tubing A 789, A 1016
Fitting A 815, A 960
Forged or rolled pipe flange and forged fitting A 182, A 961
Billet and bar for forging A 314, A 484
Chemical composition
% Fe Cr Ni Mo C Mn Si P S Cu N
min balance 24.0 6.0 3.0 0.24
max 26.0 8.0 5.0 0.030 1.20 0.80 0.035 0.020 0.50 0.32
Physical properties
Density 7.75 g/cm3
Melting range 1396-1450℃
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