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Super Freeze India is a 2205 (UNS-S32205/S31803) Duplex Steel Round Bar Stockholders and suppliers, delivering the whole India. we are ISO 9001:2008 accredited and supplies 2205 (UNS-S32205/S31803) Duplex Steel Round Bar to internationally approved quality standards for applications.

Duplex 2205 is a nitrogen enhanced duplex stainless steel that was developed to combat common corrosion problems encountered with the 300 series stainless steels. “Duplex” describes a family of stainless steels that are neither fully austenitic, like 304 stainless, nor purely ferritic, like 430 stainless. The structure of 2205 duplex stainless steel consists of austenite pools surrounded by a continuous ferrite phase. In the annealed condition, 2205 contains approximately 40-50% ferrite. Often referred to as the work horse grade, 2205 is the most widely used grade in the duplex family of stainless steels.
The advantage of a duplex structure is that it combines the favorable qualities of a ferritic alloy (stress corrosion cracking resistance and high strength) with those of an austenitic alloy (ease of fabrication and corrosion resistance). Usage of 2205 Duplex stainless steel should be limited to temperatures below 600° F. Extended elevated temperature exposure can embrittle 2205 stainless.


Specification :


Dimensions EN, DIN, JIS, ASTM, BS, ASME, AISI
Size 5 mm To 500 mm
Diameter 0.1 mm to 100 mm
Length 100 mm To 6000 mm Long & Above
Finish Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish
Tolerance H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients’ requirements
Form Round, Square, Hex (A/F),Flate, Rectangle, Billet, Ingot, Forging Etc.
Duplex Steel 2205, 31803, 32750, 32760, 2101, 2304.

Duplex/Super Duplex Steel 2205 Round Bar Equivalent Grades

Density (kg/m3) Elastic Modulus (GPa) Mean Coefficient of Thermal Expansion Thermal Conductivity Specific Heat Electrical Resistivity (nΩ.m)
0-100°C (µm/m/°C) 0-315°C (µm/m/°C) 0-538°C (µm/m/°C) at 100°C (W/m.K) at 500°C (W/m.K) 0-100° C(J/Kg.K) (nΩ.m)
7800 200 13.7 14.7 - 19.0 - 450 850

Duplex/Super Duplex Steel 2205 Round Bar Chemical Composition

Grade C Mn Si P S Cr Mo Ni N
2205 (S31803) ≤ 0.03 ≤ 2.0 ≤ 1.0 ≤ 0.030 ≤ 0.020 21.0 - 23.0 2.5 - 3.5 4.5 - 6.5 0.08 - 0.20
2205 (S32205) ≤ 0.03 ≤ 2.0 ≤ 1.0 ≤ 0.030 ≤ 0.020 22.0 - 23.0 3.0 - 3.5 4.5 - 6.5 0.14 - 0.20

Duplex/Super Duplex Steel 2205 Round Bar Mechanical Properties

Grade Tensile Strength (MPa) min Yield Strength 0.2% Proof (MPa) min Elongation (% in 50mm) min Hardness Rockwell C
(HR C)
Hardness Brinell (HB)
2205 655 450 25 31 Max 293 max



Types of Round Bar Available


Buttweld Fittings

Round Bar

Buttweld Fittings

Square Bar

Buttweld Fittings

Flat Bar

Buttweld Fittings

Hex Bar

Buttweld Fittings

Triangle Bar

Buttweld Fittings

Hollow Bar



Marking & Packing


Our Nickel Alloy 2.4066 round bars are packaged to ensure that there is no damage during transit. In case of exports, standard export packaging is done in wooden cases. All Nickel Alloy UNS N02200 bar are marked with Grade, Lot No, Size and our trade mark. We can also make custom marking on our products on Speical request from Purchaser.


Quality Assurance


Super Freeze India all Nickel Alloy 200 round bars, Nickel Alloy 200 bright bars and Nickel 200 hex bars are subject to strict inspection at each stage starting from material purchasing to product dispatch. They are visually examined for conformity to ASTM, ASME, DIN, EN, and JIS codes and standards. We can also appoint official certified Inspection Agencies upon request of our clients so that they can witness the material reports, dimensions and quality conformity of products.

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