Stainless Steel 329 Round Bar (UNS S32900) – Manufacturer, Supplier & Exporter in India
Stainless Steel 329 Round Bar is a high-strength duplex stainless steel product designed for demanding industrial environments where corrosion resistance, mechanical strength, and durability are critical. Known by designations such as SS 329 round bar, UNS S32900 round bar, and WNR 1.4460 flat bar, this grade combines the best properties of austenitic and ferritic stainless steels.
We are a trusted Stainless Steel 329 Round Bar Supplier, Exporter, and Manufacturer offering precision-engineered bars in multiple shapes, finishes, and sizes for domestic and international markets. Our material is widely used in oil & gas, chemical processing, marine, power generation, and structural applications.
What is Stainless Steel 329?
Stainless Steel 329 (UNS S32900) is a duplex stainless steel, meaning its microstructure consists of approximately 50% austenite and 50% ferrite. This balanced structure gives it:
- Higher strength than standard austenitic grades
- Better resistance to stress corrosion cracking
- Excellent performance in chloride-rich environments
- Long service life under high-pressure and temperature conditions
Because of these advantages, 329 stainless steel bars are preferred where conventional stainless steels fail prematurely.
Key Advantages of SS 329 Round Bars
- High Strength-to-Weight Ratio: Duplex structure allows thinner sections while maintaining strength, reducing overall material costs.
- Excellent Corrosion Resistance: Resists pitting, crevice corrosion, and stress corrosion cracking, especially in chloride environments.
- Better Weldability Than Many Duplex Grades: Suitable for structural and pressure equipment with controlled welding procedures.
- Long Service Life: Low maintenance and extended operational life in harsh environments.
- Cost-Effective Alternative: Higher strength means reduced material usage compared to 300-series stainless steels.
SS 329 Round Bar – Product Overview
Our Stainless Steel 329 Round Bars (UNS S32900) are manufactured in accordance with ASTM A276 Stainless Steel 329 Round Bars and other international standards. These bars are available in hot-rolled, cold-drawn, forged, and bright bar finishes to suit different machining and fabrication needs.
- SS 329 round bar
- s32900 round bar
- Stainless Steel 329 Round Bar (UNS S32900)
- AISI 329 SS Rod
- Stainless Steel DIN 1.4460 Round Bars
- SUS 329 Round Bars
- SS 1.4460 Square Bar
Mechanical Properties – SS 329 Round Bar (UNS S32900)
| Property | Value |
| Tensile Strength | ≥ 620 MPa |
| Yield Strength (0.2% Offset) | ≥ 450 MPa |
| Elongation | ≥ 20% |
| Hardness | ≤ 293 HB |
Stainless Steel 329 Round Bar – Specifications
| Parameter | Details |
| Product Name | SS 329 Round Bar |
| Grade | Stainless Steel 329 |
| UNS Number | UNS S32900 |
| DIN / WNR | 1.4460 |
| AISI | AISI 329 |
| JIS | SUS 329 |
| Form | Round Bar, Square Bar, Hex Bar, Flat Bar, Rectangle Bar, Threaded Bar, Triangular Bar |
| Manufacturing Process | Hot Rolled, Cold Drawn, Forged |
| Standard | ASTM A276 / ASTM A479 |
| ASTM Designation | ASTM A276 Type 329 |
| Condition | Annealed / Solution Treated |
| Surface Finish | Black, Bright, Turned, Polished, Peeled, Ground |
| Size Range (Round Bar) | 6 mm to 350 mm Diameter |
| Size Range (Flat Bar) | 20 mm to 200 mm Width |
| Length | 3 M, 6 M, Random Length or Cut to Size |
| Tolerance | ASTM A276 / EN 10060 |
| Heat Treatment | Solution Annealed |
| Machinability | Moderate (Better than standard duplex grades) |
| Weldability | Good with controlled procedures |
| Corrosion Resistance | Excellent (Pitting & Stress Corrosion Resistant) |
| Test Certificates | EN 10204 3.1 / 3.2 |
| Packaging | Wooden Pallets, Bundles, Export Packing |
| Application Industries | Oil & Gas, Chemical, Marine, Power, Structural |
| Country of Origin | India |
| Supply Condition | Ready Stock & Made to Order |
Chemical Composition of SS 329 (UNS S32900)
| Element | Percentage (%) |
| Chromium (Cr) | 23.0 – 28.0 |
| Nickel (Ni) | 3.0 – 6.0 |
| Molybdenum (Mo) | 1.0 – 2.5 |
| Carbon (C) | Max 0.08 |
| Manganese (Mn) | Max 2.0 |
| Silicon (Si) | Max 1.0 |
| Phosphorus (P) | Max 0.045 |
| Sulfur (S) | Max 0.03 |
| Iron (Fe) | Balance |
329 Stainless Steel Bar – Physical Properties
| Property | Value |
| Density | 7.8 g/cm³ |
| Melting Range | 1350 – 1450°C |
| Thermal Conductivity | 15 W/m·K |
| Modulus of Elasticity | 200 GPa |
| Electrical Resistivity | 0.8 µΩ·m |
Applications of Stainless Steel 329 Bars
Due to their robust performance, Austenitic Stainless Steel 329 Rods Suppliers and Dealer in Mumbai, India cater to industries such as:
- Oil & Gas pipelines and platforms
- Chemical processing equipment
- Heat exchangers and pressure vessels
- Marine and offshore structures
- Pulp and paper plants
- Power generation units
- Desalination plants
- Structural and architectural components
Forms & Shapes We Supply
We supply Stainless Steel 329 Bars in a wide range of shapes and profiles:
- SS 329 Cold Drawn Round Bar
- A276 Type 329 Bright Bar
- ASTM A276 Type 329 Hex Bar
- UNS S32900 Hex Bar
- INOX AISI 329 Square Bar
- SS 1.4460 Square Bar
- WNR 1.4460 Flat Bar
- Stainless Steel 329 Flat Bars
- Stainless Steel 329 Threaded Bars
- Stainless Steel 329 Rectangle Bar Exporter
- 329 SS Triangular Bar
- SUS 329 Bright Bar
- SS UNS S32900 Bright Bar
- A276 GR 329 Forged Bar
This wide product range allows engineers and fabricators to select the exact profile required for structural, mechanical, or pressure-based applications.
Why Choose Us for SS 329 Round Bars?
- Proven experience in duplex stainless steel products
- Ready stock of UNS S32900 round bar and profiles
- Custom cutting and machining support
- Competitive pricing with consistent quality
- Fast delivery across India and overseas
- Full material traceability and test certificates
Our focus is always on real application performance, not just meeting specifications on paper.
Stainless Steel 329 Rectangle Bars, Round Bars, and Hex Bars, Stainless Steel 329 Round Bar Supplier, Exporter, and Manufacturer
Stainless Steel 329 Round Bar (UNS S32900) is an ideal solution for industries requiring strength, corrosion resistance, and reliability under extreme conditions. Whether you need ASTM A276 Cold Drawn Bar, AISI 329 SS Rod, or SUS 329 Bright Bar, we deliver products engineered to perform in the real world.
If you are looking for a reliable Stainless Steel 329 Round Bar Supplier, Exporter, or Manufacturer in India, our team is ready to support your project with technical expertise and quality material you can trust.
Global Reach
ASC LLP boasts a robust global presence, committed to delivering unparalleled service and quality to clients around the world. Our dedication to prompt delivery and exceptional customer care sets us apart in the industry. Major corporations across the USA, Europe, Asia, and other regions place their trust in our high-quality SS 329 Bars. This widespread trust underscores our reputation for reliability and excellence. By consistently meeting and exceeding the expectations of our international clientele, we continue to solidify our position as a leader in the global steel market.
Countries We Export To
UNITED STATES, EUROPE, UK, UAE, SAUDI ARABIA, OMAN, KUWAIT, JORDAN, QATAR, INDONESIA, MALAYSIA, BRAZIL, SPAIN, ITALY, FRANCE, GERMANY, BAHRAIN, SRI LANKA, AZERBAIJAN, AUSTRALIA, AUSTRIA, PHILIPPINES, TURKEY, RUSSIA, IRAN, IRAQ, CANADA, KOREA, JAPAN, YEMEN, FINLAND, ZIMBABWE, HUNGARY, PORTUGAL, VIETNAM, MOROCCO, THAILAND, SOUTH AFRICA, MEXICO, SINGAPORE, GREECE, KUWAIT, POLAND, NEW ZEALAND, SWEDEN, SWITZERLAND, BELGIUM, BHUTAN, BANGLADESH, TAIWAN, ROMANIA, CAMBODIA, KAZAKHSTAN, AFGHANISTAN.
