Neil Metals is a reliable manufacturer and supplier of Stainless Steel 321H Round Bars and Rods, located in Kolkata, India. They provide high-performance, heat-resistant stainless steel products that are essential for critical industrial applications. SS 321H is a high-carbon variant of stainless steel 321, specifically engineered to enhance high-temperature strength and creep resistance. Neil Metals offers SS 321H round bars and rods that comply with international standards, serving industries like aerospace, power generation, petrochemical, and heat treatment. With cutting-edge production capabilities and a strong commitment to quality, Neil Metals guarantees timely delivery, precise dimensions, and outstanding performance for clients both in India and around the globe.
Stainless Steel 321H Round Bars and Rods consist of 17–19% chromium, 9–12% nickel, and 0.04–0.10% carbon, with titanium included to stabilize the alloy against intergranular corrosion. The increased carbon content boosts strength and creep resistance at high temperatures. SS 321H boasts a tensile strength of about 585 MPa and a yield strength of roughly 275 MPa. It maintains excellent oxidation resistance and mechanical stability up to 870°C, making it perfect for continuous high-temperature applications.
Standard : 321H / 1.4878
Range : 3.17mm to 350mm dia
Designation : ASTM A276, ASME SA276
Finish : Bright, Black, Polish
Thickness: 4.0mm – 100mm
Type: Bar, Bright Bar, Black Bars, Hex Bar, Square Bar, Rods, Polish Bar, Forged Bar, Round Bar
Length : Random, Fix & Cut Length
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Ti |
| 321H | 0.04 – 0.10 | 2 max | 0.75 max | 0.045 max | 0.03 max | 17 – 19 | 3 – 4 | 9 – 12 | – | 4xC min 0.60% max |
| Density | 8.0 g/cm3 |
| Melting Point | 1454 °C (2650 °F) |
| Tensile Strength | Psi – 75000 , MPa – 515 |
| Yield Strength (0.2%Offset) | Psi – 30000, MPa – 205 |
| Elongation | 35 % |
| Size (mm) | 10×10 | 12×12 | 16×16 | 20×20 | 25×25 | 32×32 | 40×40 | 50×50 |
|---|---|---|---|---|---|---|---|---|
| kg/m | 0.81 | 1.16 | 2.06 | 3.22 | 5.03 | 8.24 | 12.87 | 19.60 |
| Standard | SS 321H |
| UNS | S32109 |
| WERKSTOFF NR. / DIN | 1.4878 |
Yes, Stainless Steel 321H Round Bars and Rods can be used for natural gas applications. Their excellent resistance to high temperatures and corrosion makes them suitable for gas processing and pipeline systems.
These Stainless Steel 321H Round Bars and Rods are commonly utilized in high-temperature and pressure settings. Typical applications include heat exchangers, boiler tubes, pressure vessels, furnace components, expansion joints, and exhaust systems. They are also well-suited for structural parts in refineries, chemical plants, and power stations where resistance to thermal fatigue is vital. SS 321H is particularly appreciated for its weldability and durability under thermal stress, making it a dependable choice for welded structures and high-heat environments. Its unique blend of strength, corrosion resistance, and thermal stability makes it ideal for long-term use in challenging conditions.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Neil Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Kolkata, India
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