Round bars


Duplex Steel Round Bars

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Duplex Steel Round Bars Exporter, Manufacturer & Suppliers in India

ASTM A276 UNS S31803, S32205, S32250, S32750, S32760 Duplex Steel Round Bars


We are listed at the apex in the list of the prominent Seamless Steel Round Bars Manufacturers in India. The Duplex Steel Round Bars offered by us are made up of excellent quality materials that ensure high durability, tensile strength and resistivity to adverse conditions. Various national as well as international clients are placing bulk orders for the Duplex Steel Bright Round Bars due to the unmatched quality and unsurpassable performance. Additionally, Duplex Steel Round Bars are available in varied sizes, thickness, length and diameters.

Dinesh Tube (India) is a dynamic group, which was established over a decade ago to cater to growing demands of stainless steel raw materials. We have a team of young visionaries who endeavor for excellence in every aspect related to our products. As importers, exporter, dealers & stockiest with huge stocks Dinesh Tube (India) become within one of the most reliable sources for quality within a short span. We are registered with the best of semi-govt., govt., private & multinational companies. Our aim is to provide our buyers with everything in stainless steel under one roof viz. Dinesh Tube (India).

Duplex steel round bars

Specifications of Duplex Steel Round Bars :


3.17 MM TO 400 MM DIA


ASTM / ASME SA 276 UNS NO. S 31803, S 32205, S 32550, S 32750, S 32760.


Round Bar

Applications Of Duplex Steel Round Bars :

  • Chemical process plant
  • Oil and gas refining
  • Bridges
  • Water heaters for both homes and businesses
  • Rotors, impellers and shafts for motors
  • Seawater systems, such as seawater cooling systems
  • Blast walls and firewalls on offshore platforms, such as drilling platforms
  • Reinforcement bars that strengthen concrete structures
  • Pulp and paper industry equipment
  • Marine Environment

Chemical Composition Of 2205 (UNS-S32205/UNS-S31803) Duplex Steel Bar:

(Specification values in %, according to ASTM A276)

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

Conditions Of Supply Specified Mechanical Properties:

Values below are specified values according to ASTM A276, condition A, for cold finished bars.

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

Conditions of supply Typical Physical Properties:

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

Characteristics of Duplex steels Round Bars :

  • Increased level of passivity.

  • Good weld ability and formability.

  • Small nitrogen addition enhances both strength and pitting resistance.

  • Higher tensile and yield strengths compared to standard austenitic and ferritic grades.

  • Increased resistance to stress corrosion cracking but do not match that of ferritic grades.

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