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ASTM A790 25cr Super Duplex Seamless Tube

2205 is the most common duplex alloy which contains 22% chromium and 5% nickel and With low carbon. ASTM A790 UNS 27260 high strength, stress corrosion, crevice corrosion, and cracking. Wildly Used In Chemical with corrosion resistance.


  • ASTM A790 25cr Super Duplex Seamless Tube

Table of contents:
    Chemical Composition
    Key Properties
    Grade Specification Comparison
    Corrosion Resistance
    Manufacture Processing
    Add Value Services:

ASTM A790 25cr Super Duplex Seamless Tube Chemical Composition:

Element  Content (%)
Iron, Fe  63.75-71.92
Chromium, Cr 21.0-23.0
Nickel, Ni 4.50-6.50
Molybdenum, Mo 2.50-3.50
Manganese Mn   2.0
Silicon, Si    1.0
Nitrogen, N 0.080-0.20
Carbon, C  0.030
Phosphorous, P 0.030
Sulfur, S  0.020

Physical Properties:

The following table shows the physical properties of grade 2205 stainless steel.

Properties Metric   Imperial
Density  7.82 g/cm³ 0.283 lb/in³

Mechanical Properties:

Properties  Metric  Imperial
Tensile strength at break 621 MPa 90000 psi
Yield strength (@strain 0.200 %)  448 MPa 65000 psi
Elongation at break (in 50 mm) 25.0 %   25.0 %
Hardness, Brinell 293  293 
Hardness, Rockwell c 31.0 31.0

Manufacture Processing :
Stainless Steel Pipe Processing  

Benefits of using UNS32205 Duplex Stainless Steel:

Corrosion resistance is Better than 316L
Greater tensile and yield strength.
Good ductility and toughness though not as good as austenitic grades
Good stress corrosion cracking resistance (SSC)
Opportunity for purchases to reduce their material costs without compromising on quality.

Some of the major applications of grade 2205 Stainless Steel Tube:

Wiring in electrostatic precipitators

Oil refinery components

Seawater cooling devices

Gas scrubbing plants

Pulp and paper processing industries

Acetic, phosphoric and sulphuric acid processing plants

Ronsco Offer Add Value Services:




Polishing (Electro & Commercial)

Draw & Expansion as per required Size & Length

Ultrasonic Testing

Annealed & Pickled Bending

Why Choose US:

Hunan Allianz Metal Products Co., LTD, established in 1996, which enjoys a great reputation among over 1000 customers and cooperation partners from more than 60 countries.

We have regularly kept over 6000 tons of stock, including stainless steel welded pipes, stainless steel seamless pipes, stainless steel pipe fittings, and round bars. Overmore, 3 days delivery time for common products, which helps our customers a lot to close a deal with their partners. 

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