Welcome to Maduka Metals, your trusted partner for premium industrial materials right here in Abuja. We take pride in supplying high-integrity components like our Stainless Steel 321H Rectangular Bars, engineered for demanding environments. Sourced for reliability and performance, these bars are the backbone of robust projects across Nigeria, offering the peace of mind that comes with superior quality and local expertise you can count on.
The strength of Stainless Steel 321H lies in its specialized composition, which is stabilized with titanium to resist corrosion from high temperatures. This gives the bars excellent creep strength and the ability to perform under sustained heat. They are known for their impressive mechanical properties, including high tensile strength and good ductility, making them tough enough to handle significant stress and pressure without compromising their structural integrity.
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.
You’ll find these rectangular bars hard at work in some of the most critical industries. They are a fundamental component in furnace parts, heat exchangers, and pressure vessels, especially where temperatures can soar. The construction and petrochemical sectors rely on them for structural supports and high-temperature piping systems. Their reliable performance also makes them ideal for aircraft exhaust systems and various components in chemical processing plants, proving essential wherever heat and corrosion are constant challenges.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Maduka Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Abuja, Nigeria
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