Duplex Steel Bars Manufacturer in Cape Town , South Africa

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Based in Cape Town, Cape Town, Themba Nickel Alloys stands out as a top manufacturer and supplier of premium alloy materials, including their strong and corrosion-resistant Duplex Steel Bars. These bars are engineered for exceptional strength and durability, making them perfect for even the toughest industrial settings, and they’re produced in line with rigorous international standards. Themba Nickel Alloys caters to a wide array of industries by providing Duplex Steel Bars that excel in mechanical performance and can withstand harsh operating conditions. With a commitment to quality, precision, and customer satisfaction, the company has earned its reputation as a reliable supplier both locally and globally.

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Duplex Steel Bars are made from stainless steel grades that feature a unique dual-phase microstructure, combining austenite and ferrite in nearly equal amounts. This distinctive structure grants them impressive tensile strength—typically between 620 and 900 MPa—along with outstanding resistance to stress corrosion cracking, pitting, and crevice corrosion. Duplex grades like 2205 and 2507 offer enhanced mechanical performance and exceptional resistance in environments rich in chlorides and acids. These bars also boast good weldability, fatigue strength, and impact toughness, making them ideal for high-stress applications in both normal and elevated temperature conditions.

Duplex Steel Bars Specifications

Duplex Steel Bar StandardASTM A276, AMS 5513, AMS 5511, AMS 5647
Duplex Steel Bar DimensionsEN, DIN, JIS, ASTM, BS, ASME, AISI
Duplex Steel Round bar sizeDiameter: 3-~800mm
Duplex Steel Hex Bar size2-100mm A/F
Duplex Stainless Steel Flat bar sizeThickness: 2 -100mm
Width: 10 to 500mm
Duplex Steel Square bar size4 to 100mm
Duplex Steel Angle bar size3mm*20mm*20mm~12mm*100mm*100mm
Duplex Rectangular Bars Section3.0 to 12.0mm thickness
Duplex Steel Channel Bar80 x 40mm to 150 x 75mm section; 5.0 to 6.0mm thickness
ASTM A276 Type Hollow Bar32mm OD x 16mm ID to 250mm OD x 200mm ID)
Duplex Stainless Steel Threaded Bar Billet Size1/2 to 495mm Diameter
Duplex Steel Rectangular Size33 x 30mm to 295 x 1066mm
Duplex Hex Bars FinishCold (bright) drawn, centreless ground, hot rolled, smooth turned, peeled, slit rolled edge, hot rolled annealed, Rough Turned, Bright, Polish, Grinding, Centreless Ground & Black
ASTM A276 Type Hollow Bar ToleranceH8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients’ requirements
SAF 2507 T-Bar SurfaceBright, Hot Rolled Pickled, Cold Drawn, Sand Blasting Finished, Polished, Hairline
Rolled Duplex Steel Flat Bars ConditionHardened & tempered, annealed
ASTM A276 Type Cold Rolled Bar TechniqueDuplex Hot Rolled, Cold Drawn, Cold Rolled, Forged Round Bar, Rod
Duplex Rod ProcessingBar cutting to 650mm
Duplex Rounds Bar FormRound, Rod, T-Bar, Channel Bar, Precision Ground Bar, Flat Bar, Square, Blocks, Round Rod, Rings, Hollow, Triangle, Rectangle, Hex (A/F), Threaded, Half Round Bar, Profiles, Billet, Ingot, I/H Bar, Forging etc.

Duplex Steel Bars Chemical Composition

GradeUNS NoC %Cr %Ni %P %Si %S %Mo %N %Mn %
S31803S31803< 0.0321.0-23.04.5-6.51.03 max1 max0.02 max2.5-3.50.08-0.2< 2.0
2205S32205< 0.0322.0-23.04.5-6.50.03 max1 max0.02 max3.0-3.50.14-0.20< 2.0

Duplex Steel Bars Mechanical Properties

Grade YS (MPa) UTS (MPa) % Elongation Hardness(BHN)
S31803 450 min. 620 min. 25 min. 293 max.
2205 450 min. 655 min. 25 min. 293 max.

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Largest Manufacturer and Supplier of Duplex Steel Bars in Cape Town , South Africa

At Themban Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Steel Bars in Cape Town , South Africa, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Cape Town, allowing us to maintain a vast inventory of over 16,000 tons of premium-quality materials readily available in stock. We are dedicated to delivering superior products and services, ensuring reliability and excellence for our global clientele.

Types of Duplex Steel Bars

Duplex Steel Round Bars
Duplex Steel Industrial Bars
Duplex Steel Forged Bars
Duplex Steel Hex Bars
Duplex Steel Bright Bars
Duplex Steel Rods

Contact us to get a quick quote for your requirement.

We offer These Products as per DIN, ISO, JIS or ANSI Standard.

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Duplex Steel Bars Uses

You’ll find Duplex Steel Bars widely utilized in applications that demand a blend of strength and corrosion resistance. Key industries include offshore oil and gas, petrochemical, chemical processing, pulp and paper, marine, and power generation. These bars are essential in fabricating shafts, fasteners, valve components, structural supports, pressure vessels, and heat exchanger parts. In seawater systems and other aggressive environments, Duplex Steel Bars promise long-lasting performance with minimal upkeep. Their cost-effectiveness stems from a higher strength-to-weight ratio and extended durability, making them a smart choice for many applications.

Aerospace Industry

Defense Industy

Food Processing Industry

Construction Industry

Oil and Gas Industry

Petro Chemical Industry