Dhruv Metals, based in Hyderabad, India, stands out as a top manufacturer and supplier of high-quality Stainless Steel 321H Rectangular Bars. These bars are celebrated for their exceptional performance in high-temperature and corrosive settings. Stainless Steel 321H is a stabilized austenitic stainless steel that includes titanium and has a higher carbon content, which gives it remarkable resistance to intergranular corrosion and enhanced strength when exposed to elevated temperatures. At Dhruv Metals, we prioritize precise manufacturing standards and reliable delivery, making our SS 321H rectangular bars perfect for critical industrial applications in sectors like chemical processing, power generation, and aerospace.
The composition of Stainless Steel 321H Rectangular Bars includes chromium (17.0–19.0%), nickel (9.0–12.0%), carbon (0.04–0.10%), and titanium (at least five times the carbon content), along with trace amounts of manganese, silicon, phosphorus, and sulfur. These bars boast a minimum tensile strength of 515 MPa, a yield strength of 205 MPa, an elongation of 40%, and a maximum Brinell hardness of 217 HB. The titanium stabilization effectively prevents carbide precipitation during welding, ensuring that corrosion resistance and structural integrity are maintained even in high-heat 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.
Stainless Steel 321H Rectangular Bars find extensive use in applications that require prolonged exposure to high temperatures. They are commonly utilized in heat exchangers, superheaters, exhaust manifolds, furnace components, and chemical processing equipment. Their value shines in thermal processing, refineries, and aerospace systems, thanks to their resistance to oxidation, scaling, and stress-related corrosion cracking. With their impressive strength and excellent weldability, these bars are the go-to choice for structural and pressure-bearing components where thermal fatigue resistance and long-lasting durability are crucial.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Dhruv Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Hyderabad , India
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