Rupal Metals is a Delhi, India-based manufacturer and supplier of high quality Stainless Steel 321H Rectangular Bars. These highly corrosion-resistant bars are made with precision to suit various industrial needs. With advanced manufacturing processes and rigorous quality checks, Rupal Metals guarantees that all rectangular bars meet international standards. Our drive for excellence and punctual delivery makes us a reliable partner for customers in many different industries. Whether for heavy machinery equipment or chemical processing applications, our Stainless Steel 321H Rectangular Bars ensure stable performance and durable service.
Stainless Steel 321H Rectangular Bars consist mainly of chromium (17-19%), nickel (9-12%), and carbon (0.04-0.10%) with some added titanium to stabilize the structure and inhibit carbide precipitation. This alloy possesses superior oxidation and high-temperature corrosion resistance. In terms of mechanics, these bars have high tensile strength (approximately 515 MPa), satisfactory yield strength (about 205 MPa), and elongation of approximately 40%. The increased carbon content enhances creep resistance, making 321H an excellent choice for high temperature usage. All these qualities guarantee longevity and structural integrity under harsh conditions.
Standard : 321H / 1.4878
Range : 3.17mm to 350mm dia
Designation : ASTM A276, ASME SA276
Finish : Bright, Black, Polish
Thickness: 4.0mm – 100mm
Type: 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 % |
| Standard | SS 321H |
| UNS | S32109 |
| WERKSTOFF NR. / DIN | 1.4878 |
Choose Stainless Steel 321H Rectangular Bars based on their excellent high-temperature resistance and resistance to carbide precipitation in welding applications. Consider mechanical strength, corrosion resistance, and desired thermal stability for specific use cases.
Stainless Steel 321H Rectangular Bars generally do not require corrosion protection coatings due to their inherent corrosion resistance. However, coatings can be applied for enhanced protection in aggressive environments or specific applications.
Yes, Stainless Steel 321H Rectangular Bars can be welded, offering excellent weldability. However, using appropriate filler materials and controlling heat input is essential to prevent carbide precipitation and maintain corrosion resistance.
321H Stainless Steel Rectangular Bars find extensive application in applications where there is a need for very good high-temperature strength and corrosion resistance. Some of the applications are aerospace parts, chemical processing equipment, heat exchangers, and exhaust systems in automotive industries. Their oxide resistance and carbide precipitation make them suitable for use in furnace components, turbochargers, and gas turbine components. 321H bars also find application in food processing and pharma industries where there is a necessity for cleanliness and resistance to chemical attack. Rupal Metals distributes these bars to industries that require reliability, durability, and performance in harsh conditions, providing optimum functionality in mission-critical engineering applications.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Rupal Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Delhi, India
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