2205 Stainless Steel(UNS S32205/DIN W. Nr. 1.4462)

2205 Stainless Steel(UNS S32205/DIN W. Nr. 1.4462)
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Features

2205 is a duplex stainless steel with nearly equal proportions of austenite and ferrite when properly heat treated. This microstructure results in greater resistance to stress corrosion cracking than stainless steel 304 and 316L. 2205’s higher levels of chromium, molybdenum, and nitrogen, give it enhanced protection against pitting and crevice corrosion in the presence of chlorides.

Its yield strength is about twice that of austenitic stainless steels. 2205 steel is especially suitable

for applications in environments containing chlorides and hydrogen sulfide such as marine applications and oil and gas production.

Applications

Oil and gas industry piping, tubing and heat exchangers; pulp and paper industry bleaching equipment, liquor tanks and digesters; cargo tanks for ships and trucks; chemical processing industry pressure vessels, tanks, piping and heat exchangers; and food processing equipment.

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 N
min balance 22.0 4.5 3.0 0.14
max 23.0 6.5 3.5 0.030 2.00 1.00 0.030 0.020 0.20
Physical properties
Density 7.69 g/cm3
Melting range 1385-1443℃
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