Aiman Metals, situated in Kuala Lumpur, Malaysia, is a renowned manufacturer and supplier of high-quality stainless steel products. Dedicated to excellence, we provide a wide variety of materials, including Stainless Steel 321H Rectangular Bars. These bars are famous for their high strength, excellent corrosion resistance, and high-quality high-temperature stability. These bars are best suited for industries requiring strong and long-lasting solutions. At Aiman Metals, we merge cutting-edge manufacturing processes with rigorous quality controls to ensure accuracy and reliability. Based on the aspect of timely delivery, superior customer service, and customized solutions, we have gained the confidence of customers from industries across board, while remaining a market leader.
Stainless Steel 321H Rectangular Bars are made mainly of iron, with chromium (17–19%), nickel (9–12%), and traces of titanium to stabilize them. This composition provides excellent corrosion resistance, especially against intergranular corrosion, even upon high-temperature exposure. It has mechanical properties of tensile strength 515–700 MPa, yield strength of 205 MPa, and superior oxidation resistance at high temperatures. The alloy also provides satisfactory weldability and durability. Its strength, corrosion resistance, and thermal stability combined make it a reliable option for industries that need performance under extreme heat and harsh environments.
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 are extensively employed in high-temperature strength and corrosion-resistant demanding industries. They are used in chemical processing and petrochemical facilities for equipment dealing with aggressive chemicals at high temperatures. In the aerospace industry, they are applied in parts where structural integrity and thermal stability are needed. Power generation industries utilize them in heat exchangers, furnace components, reactor cores, and exhaust systems. Their resistance to intergranular corrosion and oxidation also makes them the most suitable for structures that are welded. Such bars are a sure bet for critical applications where performance, durability, and safety under harsh conditions are essential.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Aiman Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Kuala lumpur, Malaysia
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