Specification : :
ASTM A276 / A479
Specification : :
ASTM A276 / A479
Dimension :
EN, DIN
Size :
14mm-300mm
Thickness :
50 mm to 6000 mm Long
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
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:
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:
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:
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:
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:
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 Hex Bar
Precision-engineered hex bars designed for machining and fastener production, delivering strength, heat resistance, and durability in demanding environments.
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 Flat Bar
Versatile flat bars ideal for construction and engineering applications, offering excellent weldability, corrosion resistance, and long service life.
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 Forged Bar
Heavy-duty forged bars engineered for high-strength applications, ensuring superior mechanical properties and reliability under extreme temperature and pressure conditions.
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
Aerospace Industry
Food Processing Industry
Pulp & Paper Indusry
Energy Industry
Pharmaceuticals Industry
Power Plant Industry
Chemical Industry
Oil and Gas Industry
Get clear answers to common queries about our steel products, services, and delivery processes.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.