Duplex 2205 stainless steel is a premium duplex stainless steel alloy containing a minimum of 22% chromium, 6% nickel and 3% molybdenum. It offers incredibly good fatigue strength and excellent corrosion protection against pitting, erosion, cracking and more. This stainless steel alloy also offers higher mechanical strength than lower-grade alloys, demonstrating approximately twice the strength of austenitic stainless steels. The yield strength of 2205 is nearly double that of 300 series stainless steel. These characteristics make 2205 duplex stainless steel suitable for stainless steel investment casting process. 2205 duplex stainless steel castings are widely used in oil and gas, petrochemical, sports and other industries.

Advantages of 2205 duplex stainless steel castings
For many applications where 300 series stainless steel castings are susceptible to chloride stress corrosion cracking, 2205 duplex stainless steel castings are a cost-effective solution. Stress corrosion cracking occurs when stainless steel castings are subjected to tensile stress and come into contact with chloride-containing solutions. Elevated temperatures also increase the susceptibility of stainless steel castings to stress corrosion cracking.

The combination of chromium, molybdenum, and nitrogen gives 2205 stainless steel castings good resistance to chloride pitting and crevice corrosion. This resistance is extremely important in services such as marine environments, brackish water, bleaching operations, closed loop water systems and some food processing applications. The high chromium, molybdenum, and nitrogen contents of 2205 stainless steel castings provide superior corrosion resistance in most environments over common stainless steel castings such as 316L and 317L.

Application of 2205 stainless steel castings
Chemical process vessels, piping and heat exchangers
food processing equipment
Oilfield piping and heat exchangers
Flue gas desulfurization equipment
Other industries, such as sports, glass accessories, etc.
In fact, in China, there are very few stainless steel foundries that can produce 2205 duplex stainless steel castings. But at JC Casting, you can find a good solution for your duplex stainless steel casting project. If you have any questions about 2205 duplex stainless steel castings, please feel free to contact us!