Duplex Stainless Steel Round Bars<br />

Duplex Steel Round Bar

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A duplex steel round bar is a steel bar that is designed using duplex stainless steel, and is appreciated due to its balanced combination of characteristics. This is a two phase alloy wherein the austenitic and ferritic phases are almost equal in composition and provide a duplex round bar with significant strength, high corrosion resistance and reliable toughness.

Duplex 2205 round bar, Duplex UNS S32205 round bars, and Duplex UNS S31803 F51 round bars are very popular grades that are highly demanded in service due to their ability to combine high strength with excellent corrosion capabilities. Lakshya Steel, as the supplier of Duplex Steel Bars, offers duplex steel bar and duplex rod products that are manufactured to the highest standards to be used in the most important industries such as marine, energy, and petrochemical.

Duplex Steel Round Bar Manufacturer, Duplex Steel Industrial Rods Supplier & Duplex Steel Bars Exporter

Lakshya Steel is a top manufacturer and exporter of round bars of high strength duplex steel. The bars are popular in hard and sensitive applications, such as condensers, heat exchangers, pulp and paper processing, pharmaceutical equipment, etc. We have a reputation of regular industrial quality since we apply high grade inputs in the production process. We also provide a complete series of ferrous and non-ferrous products which meet the national and international standards.

Lakshya Steel maintains very competitive prices on the specialty alloys like duplex steel round bars. Mill test reports and third-party inspection are also available on request by customers. We offer standard specifications and custom specifications to suit every project.

In case of any need for duplex steel round bars, contact us. Our group would be able to provide the most appropriate solution and a competitive quote.

Types of Duplex Stainless Steel Round Bars

Explore the main grades of duplex round bar, including UNS S31803 and UNS S32205, designed for strength and corrosion resistance. Choose the right duplex steel round bar by service environment, chloride level, and required toughness.

Duplex Steel UNS S31803 Flanges

Duplex Steel UNS S31803 Round Bars

Duplex Steel UNS S31803 Flanges

Duplex Steel UNS S2205 Round Bars

Duplex Steel Round Bar Specification

Get the standard sizes, finishes, and tolerances for duplex steel bars as per ASTM/ASME requirements. This section helps you match duplex rod dimensions and conditions to your project specs.

Specifications ASTM A276, A479 / ASME SA276, SA479
Grade Duplex 2205 – UNS S32205/uns S31803
Technique Cold Drawn, Hot Rolled, Forged Round Bar, Rod, Cold Rolled
Tolerance H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients’ requirements
Standard AISI, API, ASTM, EN, ASME, BS Round Bars
Finish Cold (bright) drawn, centreless ground, hot rolled, smooth turned, peeled, slit rolled edge, hot rolled annealed, Rough Turned, Bright, Polish, Grinding, Centreless Ground & Black
Section 3.0 to 12.0mm thickness
Form Precision Ground Bar, Flat Bar, Square, Round, Half Round Bar, Rod, Rectangle, Hex (A/F), T-Bar, Channel Bar,Blocks, Round Rod, Threaded, Profiles, Billet, Ingot, I/H Bar, Forging, Rings, Hollow, Triangle etc.
Surface Cold Drawn, Bright, Sand Blasting Finished, Hot Rolled Pickled, Hairline, Polished
Processing Bar cutting to 650mm
Certificates EN 10204 / 3.1
Round bar size Diameter: 3-~800mm
Flat bar size Thickness: 2 -100mm
Width: 10 to 500mm
Hex Bar size 2-100mm A/F
Square bar size 4 to 100mm
Angle bar size 3mm*20mm*20mm~12mm*100mm*100mm
Billet Size 1/2″ to 495mm Diameter
Channel Bar 80 x 40mm to 150 x 75mm section; 5.0 to 6.0mm thickness
Hollow Bar 32mm OD x 16mm ID to 250mm OD x 200mm ID)
Rectangles Size 33 x 30mm to 295 x 1066mm
Condition Hardened & tempered, annealed

Duplex Round Bar Equivalent Grade

Quickly cross-reference duplex steel round bar grades across standards like ASTM, UNS, EN, and WNR. Find accurate equivalents for procurement and global sourcing of duplex round bar.

STANDARD WERKSTOFF NR. UNS
Duplex 1803 1.4462 S318032
Duplex 2205 1.4462 S32205

Chemical Composition of ASTM A276 Duplex Round Bar

You can check the typical chromium, nickel, molybdenum, and nitrogen ranges that give duplex steel bar its balanced properties. Composition guidance ensures your duplex round bar meets corrosion and strength targets.

% 2205 UR52N+
C 0-0.03 0.03 max
Mn 2.0 1.5
Si 1.0 0.8
P 0-0.03 0.035
S 0-0.02 0.02
Cr 21-23 24-26
Mo 2.5-3.5 3.0-5.0
Ni 4.5-6.5 5.5-8.0
N 0.08-0.2 0.2-0.35
Cu – 0.5-3.0

Mechanical Properties of Duplex Stainless Steel Bar

One can review the tensile strength, yield strength, elongation, and hardness for duplex steel round bar in critical duties. Use these values to validate design calculations and safety margins.

Grade 2205 UR52N+
Tensile Strength (MPa) 620 770
Proof Stress 0.2% (MPa) 450 550
Elongation A5 (%) 25 25

Physical Properties of ASME SA276 Duplex Rod

Understand density, thermal expansion, and conductivity that influence fabrication and service of duplex rod. Physical data supports decisions on heat transfer, machining, and fit-up.

Property 2205 UR52N+
Density (g.cm3) 7.805 7.810
Modulus of Elasticity (GPa) 200 205
Electrical Resistivity (Ω.m) 0.85 x 10-6 0.85 x 10-6
Thermal Conductivity (W/m.K) 19 at 100 °C 17 at 100 °C
Thermal Expansion (m/m.K) 13.7 x 10-6 to 100 °C 13.5 x 10-6 to 200 °C

Duplex Cold Drawn Bar Tolerances

Check permissible deviations for cold-drawn duplex round bar diameters and out-of-roundness. Tight tolerances help achieve precise machining, straightness, and surface finish.

Tolerance “H” Series in MM
NOMINAL SIZE / DIAMETER mm h7 h5 h8 h6 h9 H11 H10 h12
~ to 3 +0.01/0 +0.004/0 +0.014/0 +0.006/0 +0.025/0 +0.06/0 +0.04/0 +0.1/0
over 3 to 6 +0.012/0 +0.005/0 +0.018/0 +0.008/0 +0.03/0 +0.075/0 +0.048/0 +0.12/0
over 30 to 50 +0.025/0 +0.011/0 +0.039/0 +0.016/0 +0.062/0 +0.16/0 +0.1/0 +0.25/0
over 10 to 18 +0.018/0 +0.008/0 +0.027/0 +0.011/0 +0.043/0 +0.11/0 +0.07/0 +0.18/0
over 18 to 30 +0.021/0 +0.009/0 +0.033/0 +0.013/0 +0.052/0 +0.13/0 +0.084/0 +0.21/0
over 6 to 10 +0.015/0 +0.006/0 +0.022/0 +0.009/0 +0.036/0 +0.09/0 +0.058/0 +0.15/0
over 80 to 120 +0.035/0 +0.015/0 +0.054/0 +0.022/0 +0.087/0 +0.22/0 +0.14/0 +0.35/0

Duplex Stainless Flat Bar Heat Treatment

Here you can learn the recommended solution of annealing range and cooling practice for duplex steel bars. Proper heat treatment preserves phase balance and maximizes corrosion resistance.

Property Value
Process Solution Annealing
Temperature Range
  • 1025°C to 1100°C
  • 1877°F to 2012°F
Duration 30 minutes to 1 hour
Heat Treatment above 600°C (1112°F)

Manufacturing Process Of Duplex Steel Bars / Rods

Melting: The first step in the process is melting raw materials in an electric furnace. These raw materials are typically iron ore, chromium, nickel, and other elements in exact amounts. Our Duplex UNS S32205 F60 Round Bars and Duplex UNS S32205 Bars undergo a precise melting process to ensure metallurgical accuracy.

Casting: After melting, the metal is put into molds to form slabs or billets. The processing of these first forms is then continued.

Hot Rolling: After being heated, the billets are shaped into long, thin rods by going through a series of rolling mills. Because the metal is heated above its recrystallization temperature during this operation, it is known as hot rolling.

Annealing: After that, the rods are annealed to reduce stress and enhance machinability. To do this, the rods must first be heated to a certain temperature and then gradually cooled.

Cutting: Lastly, shearing machines or other cutting techniques are used to cut the rods to the required length.

We follow strict quality control at each stage to produce products like Duplex UNS S31803 Bars, Duplex 2205 Round Bar, and Duplex UNS S32205 F60 Round Bars with unmatched performance characteristics.

Duplex steel bars are available in a wide range of sizes to suit different applications and requirements. The Duplex steel bar sizes can vary depending on the diameter and length of the bars. Duplex steel bars can have diameters ranging from as small as 6mm (0.236 inches) up to larger diameters exceeding 300mm (11.8 inches) or more. Duplex steel bars typically come in standard lengths, often ranging from 3 meters (10 feet) to 6 meters (20 feet). However, custom lengths can also be available based on specific project needs.

As a seasoned Duplex Steel Round Bars Importer, Pearl Steel ensures our product range includes Duplex UNS S32205 Round Bars, Duplex UNS S31803 Bars, and custom-finished sizes for niche applications.

Duplex Round Bar Prices in India

Get an overview of market-driven pricing for duplex round bar by grade, size, and finish. Use this guide to estimate budgets and compare quotes across Indian suppliers.

Product Description

Price of Duplex Steel (USD/Ton)

Duplex Steel ASTM A276 Round Bar

$4200 ~ $5700

Duplex Steel ASTM A276 Round Bar

$3700 ~ $5200

Duplex Steel ASTM A276 Bars

$5200 ~ $6700

Duplex Steel Rods

$5200 ~ $6700

Duplex Steel Bars

$5200 ~ $6700

410 Stainless Steel Fasteners Types

Frequently Asked Questions About Duplex Steel Round Bar

How are Duplex Stainless Steel Round Bars manufactured?

Duplex round bars are made by melting scrap steel and alloys in an electric arc furnace, refined in an AOD converter, cast into ingots/blooms, reheated, forged or rolled to size, solution annealed, quenched, and mechanically peeled for finish.

Which duplex steel grades are typically used for round bars?

Common grades include Duplex 2205 (UNS S31803/S32205), Super Duplex S32750, S32760, SAF 2507, Zeron 100, and F53/F55. Duplex 2205 is most widely used for its excellent corrosion resistance and mechanical properties.

Which standards apply to Duplex Stainless Steel Round Bars?

Duplex round bars conform to ASTM A276, ASTM A479, ASME SA276, ASME SA479, EN 10088-3, EN 10272, BS standards, and NACE MR0175/ISO 15156 for corrosion-resistant applications in oil and gas industries.

What are the common sizes for duplex steel round bars?

Common sizes range from 3mm to 800mm diameter. Popular sizes include 10mm, 12mm, 20mm, 25mm, 50mm, 100mm, 120mm, and 150mm. Available in metric (5-500mm) and imperial (0.25-20 inches) with lengths of 1-6 meters or 9-12 meters.

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