English 
Duplex 2205 is a nitrogen-enhanced duplex stainless steel specifically engineered to address prevalent corrosion issues associated with the 300 series stainless steels. The term "duplex" refers to a category of stainless steels that do not fall entirely within the austenitic realm, such as 304 stainless, nor are they exclusively ferritic, like 430 stainless. The composition of 2205 duplex stainless steel features a structure comprising pools of austenite encased by a continuous ferritic phase. In its annealed state, 2205 typically contains around 40-50% ferrite. Commonly known as the workhorse grade, 2205 stands as the most extensively utilized grade within the duplex family of stainless steels. The duplex configuration offers the distinct advantage of merging the beneficial properties of a ferritic alloy—such as resistance to stress corrosion cracking and elevated strength—with the advantageous characteristics of an austenitic alloy, which include ease of fabrication and enhanced corrosion resistance.
Corrosion Resistance 2205 duplex stainless steel presents a cost-effective alternative for various applications in which the 300 series stainless steels are vulnerable to chloride stress corrosion cracking. This type of cracking arises when stainless steels experience tensile stress while exposed to chloride-containing solutions. Additionally, elevated temperatures further heighten the susceptibility of stainless steels to stress corrosion cracking.
The excellent resistance of 2205 to chloride pitting and crevice corrosion is attributed to the combination of chromium, molybdenum, and nitrogen. This resistance holds significant importance for applications in marine environments, brackish water, bleaching processes, closed-loop water systems, and certain food processing scenarios. The elevated levels of chromium, molybdenum, and nitrogen found in 2205 offer a level of corrosion resistance that surpasses that of standard stainless steels, including 316L and 317L, in a majority of environments.
| Cr | Ni | Mo | C | N | Mn | Si | P | S | Fe |
|---|---|---|---|---|---|---|---|---|---|
22.0-23.0 | 4.50-6.50 | 3.00-3.50 | .030 Max | 0.14-0.20 | 2.00 Max | 1.00 Max | .030 Max | .020 Max | Balance |
High resistance to chloride stress corrosion cracking
Resistance to chloride pitting and crevice corrosion
Good general corrosion resistance
Good sulfide stress corrosion resistance
High Strength
Good weldability and workability
Chemical process vessels, piping and heat exchangers
Pulp mill digesters, bleach washers, chip pre-steaming vessels
Food processing equipment
Oil field piping and heat exchangers
Flue gas desulfurization equipment
| Pipe Smls | Pipe Welded | Tube Smls | Tube Welded | Sheet/Plate | Bar | Flanges, Fittings & Valves |
|---|---|---|---|---|---|---|
A790 | A790 | A789 | A789 | A240 | A276 | A182 |
Specified Tensile Properties ASTM A240
| Ultimate Tensile Strength, ksi Minimum | .2% Yield Strength, ksi Minimum | Hardness Max. |
|---|---|---|
95 | 65 | 31 Rockwell C |
HUI YOU TONG is a metal supplier of Hastelloy, Monel, Inconel, Incoloy, Stainless Steel, Duplex Stainless Steel, Super Duplex Stainless Steel, Nickel Alloys and more. If you are looking for supplier who can produce Plate/Sheet/Coil/Strip/Rod/Bar/Pipe/Tube made of duplex 2205, HUI YOU TONG could give you a competitive price to help you save cost as much as possible.
Duplex 2205 is a nitrogen-enhanced duplex stainless steel specifically engineered to address prevalent corrosion issues associated with the 300 series stainless steels. The term "duplex" refers to a category of stainless steels that do not fall entirely within the austenitic realm, such as 304 stainless, nor are they exclusively ferritic, like 430 stainless. The composition of 2205 duplex stainless steel features a structure comprising pools of austenite encased by a continuous ferritic phase. In its annealed state, 2205 typically contains around 40-50% ferrite. Commonly known as the workhorse grade, 2205 stands as the most extensively utilized grade within the duplex family of stainless steels. The duplex configuration offers the distinct advantage of merging the beneficial properties of a ferritic alloy—such as resistance to stress corrosion cracking and elevated strength—with the advantageous characteristics of an austenitic alloy, which include ease of fabrication and enhanced corrosion resistance.
Corrosion Resistance 2205 duplex stainless steel presents a cost-effective alternative for various applications in which the 300 series stainless steels are vulnerable to chloride stress corrosion cracking. This type of cracking arises when stainless steels experience tensile stress while exposed to chloride-containing solutions. Additionally, elevated temperatures further heighten the susceptibility of stainless steels to stress corrosion cracking.
The excellent resistance of 2205 to chloride pitting and crevice corrosion is attributed to the combination of chromium, molybdenum, and nitrogen. This resistance holds significant importance for applications in marine environments, brackish water, bleaching processes, closed-loop water systems, and certain food processing scenarios. The elevated levels of chromium, molybdenum, and nitrogen found in 2205 offer a level of corrosion resistance that surpasses that of standard stainless steels, including 316L and 317L, in a majority of environments.
| Cr | Ni | Mo | C | N | Mn | Si | P | S | Fe |
|---|---|---|---|---|---|---|---|---|---|
22.0-23.0 | 4.50-6.50 | 3.00-3.50 | .030 Max | 0.14-0.20 | 2.00 Max | 1.00 Max | .030 Max | .020 Max | Balance |
High resistance to chloride stress corrosion cracking
Resistance to chloride pitting and crevice corrosion
Good general corrosion resistance
Good sulfide stress corrosion resistance
High Strength
Good weldability and workability
Chemical process vessels, piping and heat exchangers
Pulp mill digesters, bleach washers, chip pre-steaming vessels
Food processing equipment
Oil field piping and heat exchangers
Flue gas desulfurization equipment
| Pipe Smls | Pipe Welded | Tube Smls | Tube Welded | Sheet/Plate | Bar | Flanges, Fittings & Valves |
|---|---|---|---|---|---|---|
A790 | A790 | A789 | A789 | A240 | A276 | A182 |
Specified Tensile Properties ASTM A240
| Ultimate Tensile Strength, ksi Minimum | .2% Yield Strength, ksi Minimum | Hardness Max. |
|---|---|---|
95 | 65 | 31 Rockwell C |
HUI YOU TONG is a metal supplier of Hastelloy, Monel, Inconel, Incoloy, Stainless Steel, Duplex Stainless Steel, Super Duplex Stainless Steel, Nickel Alloys and more. If you are looking for supplier who can produce Plate/Sheet/Coil/Strip/Rod/Bar/Pipe/Tube made of duplex 2205, HUI YOU TONG could give you a competitive price to help you save cost as much as possible.
