Starc Metals stands out as a premier manufacturer and supplier located in Canberra, Australia, with a focus on high-quality Stainless Steel 321H Rectangular Bars. Known for their precision, durability, and top-notch quality, the company delivers products that not only meet international standards but also cater to a wide range of industrial needs. They serve various sectors, including aerospace, chemical processing, power generation, and marine, providing high-performance stainless steel solutions for even the most demanding applications. Thanks to their advanced manufacturing techniques, strict quality control, and prompt delivery, every 321H rectangular bar guarantees exceptional corrosion resistance, heat resistance, and mechanical strength, solidifying Starc Metals’ reputation as a reliable supplier of stainless steel products throughout Australia and beyond.
Stainless Steel 321H Rectangular Bars are a type of stabilized austenitic stainless steel, featuring around 17–19% chromium, 9–12% nickel, and a higher carbon content compared to standard 321, with titanium added to combat intergranular corrosion. This unique composition offers remarkable resistance to oxidation, stress corrosion, and high-temperature conditions. The material boasts a tensile strength of about 515–750 MPa, along with good ductility, toughness, and dependable weldability. With excellent dimensional stability and formability, 321H rectangular bars ensure long-lasting mechanical performance and durability, even in tough industrial and high-temperature settings.
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.
These Stainless Steel 321H Rectangular Bars find extensive use in industries that demand materials resistant to high heat and corrosion. They are perfect for applications like chemical processing equipment, furnace components, heat exchangers, pressure vessels, and marine uses. Their ability to maintain strength and resist oxidation at elevated temperatures makes them ideal for sectors such as aerospace, petrochemical, and power generation. Additionally, 321H rectangular bars are utilized in structural components, machinery parts, and automotive applications that face thermal stress or 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.
Starc Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Canberra, Australia
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