2205 duplex stainless sleel is a duplex stsinless sleel composed of 21% chromium，,2.5% molybdenum and 4.5% nickelnilrogerallay, The ferrite and austenite structures each account for approximalely 50%. lt has high strength, good impact toughness and good overall and locd stress corrosion resistance. The yield slrength of 2206 duplex slainless steel is twice that of auslenilic stainless steel. This festure enables designers to reduce weight when designing producks, making his alloy more cost- efective than 316 and 317L. This alloy is particularly sutable for the temperalure range at -50°F/+600°F. for applicatians beyond this temperalurer ange, this alloy can also be considered, but there are some limitasions, especially when applied to welded structures

Executive Standards:

ASTM A240/ASME SA-240.ASTM A276,ASTM A182/ASME SA-182. ASTM A312/ASMES A312

Physical Properties:

Density: 7.98 g/cm3

Melting point: 1300-1390'C

Solution Heat Treatment:

Hold the temperature between 1000 - 1050'c for 1-2 hours, fast air cooling or water cooling

Mechanical Properties:

Tensile Strength: ob>795Mpa

Yield Strength: ob>550Mpa

Elongation:ō>15%

Hardness ≤310 (HB)

corrosion Resistance and Use Environment:

Compared with 316L and 317L austenitic stainless steel, 2205 duplex stainless steel has superior performance in resistance to piting corrosion and crevice corrosion. t has high corrosion resistance. Compared with austenitic, its The coefficient of thermalexpansion is lower and the thermal conductivity is higher. Compared with austenitic stainless steel, duplex stainless steel 2205alloy has twice its compressive strenath, Compared with 316L and 317L, the desianer can reduce its weight. Alloy 2205 isespecially suitable for the temperature range of -50°F/+600°F. Under strict restrictions (especialy for welded structures). it canalso be used at lower temperatures

Applications of 2205 Dss Castings:

Oil and gas industry equipment;

Offshore platforms, heat exchangers, underwater equipment, fire fighting equipment;Chemical processing industry, utensils and pipeline industry;Desalination,high-pressure RO equipment and submarine pipelines.Energy industry such as power plant desulfurization and denitration FGD system, industrial scrubbing system, absorptiontower:

Mechanical parts (high-strength, corrosion-resistant, wear-resistant parts)