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2205 Hot Rolled Stainless Steel Seamless Tube

Duplex 2205 is a two-phase, ferritic, austenitic 22% chromium, 3% molybdenum, 5 to 6% nickel alloyed stainless steel. It is the most widely used duplex stainless steel grade and is characterized by high yield strength, double that of the standard austenitic stainless steel grades. It also demonstrates good fatigue strength, as well as outstanding resistance to stress corrosion cracking, crevice, pitting, erosion, and general corrosion in severe environments.


  • 2205 Hot Rolled Stainless Steel Seamless Tube

Table of contents:

Chemical Composition
Physical Properties

Mechanical Properties

Manufacture Processing
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Table 1. Typical chemical composition for Duplex 2205:

                                                                  Chemical Composition of Duplex 2205
Elements                                           Grade                            Common  Name

C% 0.030 0.030 0.030 0.030
Mn% 2.0 2.0 2.00 2.00
SI% 1 1 1 1
0.030 0.030 0.030 0.030
S% 00.02 0.02 0.02 0.02
Cr% 21.00-23.00 21.00-23.00 22.0-23.0 22.0-23.0
Mo% 2.00-2.50 2.00-2.50 2.00-2.50 2.00-2.50
Ni% 4.5-6.5 4.5-6.5 4.5-6.5 4.5-6.5
N% 0.8-0.2 0.8-0.2 0.14-0.20 0.40- 0.70

Physical Properties of  Duplex Stainless Steel 2205:

Typical physical properties for grade 2205 stainless steel are given in table 3. There are surprisingly large variations in the values from different manufacturers for notionally identical materials.
2205 has a microstructure containing approximately 50% ferrite in the annealed condition, quenched from about 10500C. Higher annealing temperatures often result in an increase of ferrite content.

Mechanical Properties:

Mechanical properties for grade 2205 stainless Steel are given in table 2.

Table 2: Mechanical Properties of 2205 (Annealed Condition)

Table 3: Physical Properties of Grade 2205 (Typical Values in Annealed Condition)

Tensile strength 620MPa min
Density 7,805kg/m3
Yield strength 450MPa mi
Elastic modulus 200GPa
Elongation 25% min

Mean coefficient of thermal expansion

Brinell hardness 293 HB max
0-100oC 13.7µm/m/oC
Rockwell hardness 31 HR C max

Manufacture Processing :
  Stainless Steel Pipe Processing  

Chemical processing, transport and storage – pressure vessels, tanks, piping, and heat exchangers
Oil and gas exploration and processing equipment – piping, tubing, and heat exchangers
Marine and other high chloride environments
Effluent scrubbing systems
Pulp and paper industry – digesters, bleaching equipment, and stock-handling systems
Cargo tanks for ships and trucks
Food processing equipment
Biofuels plants

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Polishing (Electro & Commercial)

Draw & Expansion as per required Size & Length

Ultrasonic Testing

Annealed & Pickled Bending

Shipping & Packing:


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