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321 Round Bar Supplier in Dubai

321 Round Bar Supplier in Dubai

Specification : :

ASTM A276 / A479

Dimension :

EN, DIN

Size :

14mm-300mm

Thickness :

50 mm to 6000 mm Long

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If you are searching for Stainless Steel 321 Round Bar in Dubai, you likely need a material that performs reliably in high-temperature and corrosion-prone environments. Grade 321 is a titanium-stabilized austenitic stainless steel designed to resist intergranular corrosion after exposure to elevated temperatures. This makes it a preferred choice across the UAE’s demanding industrial sectors.

Our SS 321 Round Bar range is engineered for durability, dimensional accuracy, and consistent metallurgical quality—helping fabricators, EPC contractors, and maintenance teams meet project timelines with confidence.

What Is Stainless Steel 321 Round Bar?

321 Round Bar is a chromium-nickel stainless steel bar stabilized with titanium. The titanium addition prevents chromium carbide precipitation during welding and high-heat service, which enhances long-term corrosion resistance.

Key Characteristics

  • Excellent resistance to intergranular corrosion
  • Superior performance in high-temperature environments
  • Good weldability without post-weld annealing
  • Strong oxidation resistance up to elevated temperatures
  • Reliable mechanical strength for structural applications

Because of these properties, is widely used in petrochemical, refinery, and heat-intensive operations across Dubai and the wider UAE.

Why Industries in Gulf Prefer SS 321 Round Bar

Because it offers:

  1. Stability in continuous high-temperature service
  2. Reduced risk of weld decay
  3. Long service life in aggressive environments
  4. Compatibility with fabrication and machining processes

For projects where standard 304 or 316 may suffer sensitization, and provides a safer, longer-lasting alternative.

Available Sizes and Specifications

KVN SS 321 Round Bar inventory is designed to meet diverse project needs.

Forms available: Hot rolled, Bright, Forged, Peeled and polished bars

Typical size range:

  1. Diameter: 6 mm to 300 mm
  2. Length: Standard and cut-to-size options
  3. Finish: Black, bright, or polished

Custom specifications can also be arranged for bulk industrial requirements.

Common Applications of 321 Round Bar

Because of its heat resistance and structural reliability, and widely used in:

  1. Aircraft exhaust manifolds
  2. Expansion joints
  3. Heat exchangers
  4. Furnace components
  5. Petrochemical processing equipment
  6. Marine fittings
  7. Structural components exposed to high heat

If your application involves sustained temperatures between 400°C and 900°C, SS 321 Round Bar is often the recommended material.

Quality Assurance and Material Integrity

When sourcing Stainless Steel 321 Round Bar in Dubai, quality verification is critical. Each batch should ideally be supplied with:

  • Mill Test Certificate (MTC)
  • PMI testing (if required)
  • Third-party inspection options
  • Dimensional and surface checks

This ensures traceability and compliance with international standards, which is especially important for EPC and export projects.

How to Choose the Right SS 321 Round Bar Supplier in Dubai

Before finalizing your purchase, consider these expert checkpoints:

  • Stock availability for urgent requirements
  • Compliance with ASTM / ASME standards
  • Fast delivery across Dubai and the UAE
  • Technical support for grade selection
  • Competitive and transparent pricing

A dependable supplier not only delivers material but also supports your project timelines and quality expectations.

Choosing the right Stainless Steel 321 Round Bar can significantly improve equipment life, safety, and maintenance costs. With its titanium stabilization, heat resistance, and corrosion performance, SS 321 Round Bar remains a trusted material for critical industrial applications across the UAE.

If your project demands reliability under heat and stress, 321 Round Bar is a smart, future-ready material choice.

321/321H Stainless Steel Round Bar Equivalent Grades

STANDARD UNS WNR. JIS EN
SS 321 S32100 1.4541 SUS 321 X6CrNiTi18-10
SS 321H S32109 1.4878 SUS 321H X12CrNiTi18-9

SS 321/321H Square Bar

Stainless steel square bars with titanium stabilization, offering excellent resistance to intergranular corrosion and high-temperature performance for structural and industrial applications.

SS 321/321H Square Bar

SS 321/321H Hex Bar

Precision-engineered hex bars designed for machining and fastener production, delivering strength, heat resistance, and durability in demanding environments.

SS 321/321H Hex Bar

SS 321/321H Rectangular Bar

Durable rectangular bars suitable for fabrication and structural use, providing consistent strength and resistance to oxidation at elevated temperatures.

SS 321/321H Rectangular Bar

SS 321/321H Flat Bar

Versatile flat bars ideal for construction and engineering applications, offering excellent weldability, corrosion resistance, and long service life.

SS 321/321H Flat Bar

SS 321/321H Bright Bar

High-finish bright bars with smooth surface and dimensional accuracy, widely used in precision components, shafts, and automotive applications.

SS 321/321H Bright Bar

SS 321/321H Forged Bar

Heavy-duty forged bars engineered for high-strength applications, ensuring superior mechanical properties and reliability under extreme temperature and pressure conditions.

SS 321/321H Forged Bar

Specification : :

ASTM A276 / A479

Dimension :

EN, DIN

Size :

14mm-300mm

Thickness :

50 mm to 6000 mm Long

Length :

Custom Cut Length

Form :

Round, Square, Hex(A/F), Rectangle, Billet, Ingot, Forging Etc.

Chemical Composition of Stainless Steel 321/321H Round Bar

% Cr Ni C Si Mn P S N Ti Fe
321 min:17.0
max:19.0
min: 9.0
max:12.0
max:0.08 max:0.75 max:2.0 max:0.045 max:0.03 max:0.10 min:5*(C+N)
max:0.70
Balance
321H min:17.0
max:19.0
min: 9.0
max:12.0
min:0.04
max:0.10
min:18.0
max:20.0
max:2.0 max:0.045 max:0.03 max:0.10 min:5*(C+N)
max:0.70
Balance

Mechanical Properties Of Stainless Steel 321/321H Round Bar

Grade Tensile Strength
ksi (min.)
Yield Strength 0.2%
Offset ksi (min.)
Elongation -
% in
50 mm (min.)
Hardness
(Brinell) MAX
321/321H 75 30 40 217

Physical Properties of 321/321H Stainless Steel Round Bar

Denstiy
lbm/in3
Coefficient of
Thermal Expansion (min/in)-°F
Thermal Conductivity BTU/hr-ft-°F Specific Heat BTU/lbm -°F Modules of Elasticity (annealed)2-psi
at 68 °F at 68 – 212°F at 68 – 1832°F at 200°F at 32 – 212°F in tension (E)
0.286 9.2 20.5 9.3 0.12 28 x 106

Our 321 Round Bar Supplier in Dubai are used in a wide range of applications and various industries. Below are a few of them:

Application Industries

Application Industries

Aerospace Industry

Aerospace Industry

Food Processing Industry

Food Processing Industry

Pulp & Paper Indusry

Pulp & Paper Indusry

Energy Industry

Energy Industry

Pharmaceuticals Industry

Pharmaceuticals Industry

Power Plant Industry

Power Plant Industry

Chemical Industry

Chemical Industry

Oil and Gas Industry

Oil and Gas Industry

Frequently Asked Questions

Get clear answers to common queries about our steel products, services, and delivery processes.

Why should I choose SS 321 Round Bars for high-temperature industrial applications?

SS 321 Round Bars are manufactured from titanium-stabilised austenitic stainless steel, providing excellent resistance to intergranular corrosion after welding and prolonged exposure to elevated temperatures. They maintain mechanical strength, oxidation resistance, and structural stability, making them well suited to heat exchangers, furnace components, pressure vessels, refinery equipment, and high-temperature process piping where long-term reliability is essential.

Which industries commonly use SS 321 Round Bars?

SS 321 Round Bars are extensively specified across the oil and gas, petrochemical, power generation, chemical processing, aerospace, heat treatment, fertiliser, food processing, and engineering fabrication industries. They are widely used for manufacturing shafts, fasteners, flanges, valve components, pump parts, furnace fixtures, and equipment operating under elevated temperatures and corrosive service conditions.

How does SS 321 Round Bar compare with SS 304 and SS 316 Round Bars?

SS 321 offers superior resistance to sensitisation and intergranular corrosion because of its titanium stabilisation, making it particularly suitable for welded and high-temperature applications. SS 304 is generally selected for general-purpose corrosion resistance, while SS 316 provides improved resistance to chlorides and aggressive chemical environments due to its molybdenum content. Material selection should always reflect the operating environment, service temperature, and project requirements.

How do I select the correct SS 321 Round Bar for my project?

Selecting the appropriate SS 321 Round Bar requires evaluating the operating temperature, mechanical loading, corrosion environment, diameter, dimensional tolerance, surface finish, fabrication requirements, and applicable ASTM or ASME specifications. A systematic engineering assessment helps ensure optimum material performance, regulatory compliance, and long-term operational reliability.

Can SS 321 Round Bars be supplied in customised sizes and finishes?

Yes. SS 321 Round Bars are available in customised diameters, cut lengths, surface finishes, machining tolerances, and project-specific specifications. Custom manufacturing and processing help reduce fabrication time, minimise material wastage, and support efficient installation across a wide range of industrial applications.

What quality assurance procedures are carried out before SS 321 Round Bars are supplied?

SS 321 Round Bars typically undergo comprehensive quality verification, including Positive Material Identification (PMI), chemical composition analysis, mechanical property testing, dimensional inspection, hardness testing, ultrasonic testing (UT), surface examination, and complete material traceability supported by Mill Test Certificates (EN 10204 3.1). These procedures verify compliance with international engineering and quality standards.

Which international standards apply to SS 321 Round Bars?

SS 321 Round Bars are commonly manufactured in accordance with ASTM A276, ASTM A479, ASTM A182, ASME SA276, and ASME SA479 specifications, depending on the intended application. Compliance with these internationally recognised standards helps ensure dimensional accuracy, material consistency, mechanical integrity, and dependable performance in critical industrial environments.

What documentation should accompany SS 321 Round Bars before purchase?

Industrial buyers should expect SS 321 Round Bars to be supplied with Mill Test Certificates (EN 10204 3.1), chemical composition reports, mechanical property test results, dimensional inspection records, Positive Material Identification (PMI) reports where specified, and complete material traceability documentation. These records facilitate project approval, quality verification, and regulatory compliance.

How quickly can SS 321 Round Bars be supplied for industrial projects?

Delivery schedules depend on product dimensions, quantity, machining requirements, and stock availability. Standard sizes are generally available for prompt dispatch, while customised specifications may require additional manufacturing time. Confirming technical requirements at the enquiry stage helps ensure efficient order processing and timely project delivery.

Why should I purchase SS 321 Round Bars from KVN Steels?

KVN Steels supplies SS 321 Round Bars manufactured in accordance with internationally recognised ASTM and ASME standards. Our product range is supported by comprehensive quality documentation, complete material traceability, technical assistance for material selection, and reliable delivery for industrial and EPC projects. This combination helps engineers and procurement teams source technically compliant materials with confidence for demanding engineering applications.

Need more information about our metal solutions?

Get in touch with us today to discuss how KVN Steels can meet your needs with competitive pricing, timely delivery, and exceptional performance.

Need more information about our metal