2205 seamless piping

2205 duplex stainless steel is an (austenitic-ferrite) duplex stainless steel (referred to as 2205 duplex steel) composed of 22% chromium, 3% molybdenum and 4.5% nickel-nitrogen alloy. 2205 duplex stainless steel is a nitrogen-added duplex stainless steel with high strength, good impact toughness, and good overall and local stress corrosion resistance. 2205 Duplex Steel is particularly suitable for use in the -50°F/+600°F temperature range. The alloy may also be considered for applications outside this temperature range.

Duplex 2205 stainless steel (ferritic and austenitic) is widely used in applications requiring good corrosion resistance and strength. Grade S31803 stainless steel was modified several times to form UNS S32205, which was approved in 1996. This grade has higher corrosion resistance.

When the temperature is above 300°C, the microscopic components of this grade precipitate, and when the temperature is below -50°C, the microscopic components undergo a ductile-to-brittle transition; therefore, this grade of stainless steel is not suitable for use at these temperatures.

Duplex stainless steel 2205 standard number: ASTM A240/A240M--01 Duplex stainless steel 2205 alloy is a composite stainless steel composed of 22% chromium, 2.5% molybdenum and 4.5% nickel nitrogen alloy. It has high strength, good impact toughness and good overall and local resistance to stress corrosion.