Neil Metals is a reputable manufacturer and supplier of Stainless Steel 321H Hex Bars and Rods, located in Kolkata, India. They specialize in delivering top-notch, heat-resistant stainless steel products designed for tough industrial applications. Renowned for their precision engineering and commitment to international standards, Neil Metals provides SS 321H hex bars and rods that excel in high-temperature and high-pressure settings. These products find their place in various industries, including petrochemical, aerospace, thermal processing, and power generation. With state-of-the-art manufacturing facilities, rigorous quality control, and a promise of timely delivery, Neil Metals serves both domestic and international markets with unwavering reliability.
Stainless Steel 321H Hex Bars and Rods are titanium-stabilized austenitic stainless steel alloys, featuring a higher carbon content (0.04–0.10%) compared to standard 321, which boosts their creep resistance and high-temperature strength. The typical makeup includes 17–19% chromium, 9–12% nickel, and titanium to guard against intergranular corrosion post-welding. SS 321H boasts a tensile strength of about 585 MPa and a yield strength of roughly 275 MPa. It retains excellent mechanical properties and oxidation resistance at elevated temperatures, making it perfect for continuous use above 538°C (1000°F).
Dimensions : ASTM, ASME
Standard : ASTM / ASME SA A276, A479, ASTM A493
Length : Random, Fix & Cut Length
Size : 20MM to 150MM
| Element | C | Cr | Mn | Ni | P | S | Si |
| SS 321 | 0.08 max. | 17.0 – 19.0 | 2.00 max. | 9.0-12.0 | 0.045 max. | 0.03 max. | 0.75 max. |
| SS 321H | 0.04 – 0.10 | 17.0 – 19.0 | 2.00 max. | 9.0-12.0 | 0.045 max. | 0.03 max. | 0.75 max. |
| Element | C | Cr | Mn | Ni | P | S | Si |
| SS 321 | 0.08 max. | 17.0 – 19.0 | 2.00 max. | 9.0-12.0 | 0.045 max. | 0.03 max. | 0.75 max. |
| SS 321H | 0.04 – 0.10 | 17.0 – 19.0 | 2.00 max. | 9.0-12.0 | 0.045 max. | 0.03 max. | 0.75 max. |
| HEXAGONS | ||
|---|---|---|
| Size(mm) | WT PER FEET IN KGS | WT PER MTR IN KGS |
| 16 | 0.55 | 1.79 |
| 18 | 0.69 | 2.27 |
| 20 | 0.85 | 2.80 |
| 22 | 1.03 | 3.39 |
| 25 | 1.33 | 4.38 |
| 28 | 1.67 | 5.49 |
| 30 | 1.92 | 6.30 |
| 32 | 2.19 | 7.17 |
| 36 | 2.77 | 9.07 |
| 38 | 3.08 | 10.11 |
| 40 | 3.41 | 11.20 |
| 45 | 4.32 | 14.18 |
| 50 | 5.34 | 17.50 |
| 56 | – | – |
| 60 | – | – |
| 65 | – | – |
| 70 | – | – |
| 75 | – | – |
| 80 | – | – |
| 90 | – | – |
| 100 | – | – |
SS 321H Hex Bars/Rods are highly resistant to oxidation and intergranular corrosion due to titanium stabilization, making them ideal for high-temperature environments. They offer excellent strength, durability, and resistance to sulfur compounds, ensuring reliability in extreme conditions.
SS 321H Hex Bars/Rods are commonly used in aerospace, chemical processing, power generation, petrochemical, and pharmaceutical industries. They are ideal for high-temperature applications such as heat exchangers, pressure vessels, exhaust systems, and furnace components due to their excellent corrosion resistance.
SS 321H Hex Bars/Rods can be welded easily, thanks to their titanium stabilization, which prevents sensitization and intergranular corrosion. However, it's essential to use low-carbon filler materials to maintain the material's properties and prevent carbide precipitation. Pre-heating and post-weld heat treatment may be required for optimal results.
These Stainless Steel 321H Hex Bars and Rods are commonly utilized in situations where they face prolonged exposure to high heat and stress. Typical applications include furnace components, heat exchangers, pressure vessels, jet engine parts, and exhaust manifolds. Their hexagonal design enhances grip and stability for machining and fastening tasks. In oil refineries and chemical plants, SS 321H is preferred for its ability to resist oxidation and scaling in high-temperature operations. Its weldability, strength retention at elevated temperatures, and resistance to sensitization make it a go-to choice for fabrication in harsh thermal and corrosive environments.
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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