Home > Stud Bolts > Stainless Steel 321 / 321H Stud Bolts
Njabulo Stainless, located in Cape Town, South Africa, is a reputable manufacturer and supplier of top-notch Stainless Steel 321 / 321H Stud Bolts. Known for their durability, precision, and outstanding resistance to corrosion, these stud bolts are crafted to perform reliably even in the toughest conditions. Njabulo Stainless takes pride in ensuring that every product adheres to international standards, thanks to their advanced manufacturing processes and rigorous quality control. Their Stainless Steel 321 / 321H Stud Bolts are commonly utilized in industries that demand exceptional mechanical strength and resistance to high-temperature oxidation, making them perfect for various industrial and engineering applications.
Stainless Steel 321 / 321H Stud Bolts are titanium-stabilized austenitic stainless steels, featuring a blend of chromium, nickel, titanium, and carbon. The inclusion of titanium boosts resistance to intergranular corrosion and helps maintain strength at higher temperatures. Compared to 321, Stainless Steel 321H has a higher carbon content, which enhances its creep resistance and strength when exposed to prolonged heat. These grades boast impressive mechanical properties, including high tensile and yield strength, superior hardness, and remarkable resistance to scaling and oxidation at temperatures reaching up to 870°C.
| Grade | Stainless Steel 321 / 321h |
| Specifications | ASTM A193 / ASME SA193, DIN, ASTM, BS and all International Standards |
| Length | 3mm to 200mm |
| Size | M 02 to M 160, Custom Sizes |
| Types | Threaded Rod, Class A double ended stud, Tie Rod, Double Ended Stud, Stud Bolts, Bronze Hex Studs, Threaded Studs etc |
| Element | Ni | C | Mn | P | S | Si | Cr |
| SS 321 / 321h | 9.00 – 12.00 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 17.0-19.0 |
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| SS 321 / 321h | 8.0 g/cm3 | 1454 °C (2650 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 40 % |
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These general-purpose stud bolts are known for excellent corrosion resistance and stability at high temperatures, suitable for diverse industrial applications.
Designed with a hexagonal head for easy installation, these bolts offer high strength and resistance to scaling and oxidation.
These fully threaded bolts provide uniform grip and strength, ideal for high-stress environments and precision applications.
Designed to anchor structures securely, these bolts resist corrosion and maintain durability in high-pressure and thermal conditions.
Engineered for exhaust systems, they provide excellent high-temperature resistance and withstand thermal cycling.
Used in heavy-duty wooden or masonry structures, these bolts combine corrosion resistance with exceptional durability.
Njabulo Stainless ensures stainless steel 321 / 321H stud bolt produced is quality-based and has appropriate testing under hardness, spectro analysis, PMI, flaring. Extended documentation is allowed in the invoice, details as related to packaging as well as its certificate of origin along with Third-party inspection certificate.
These Stainless Steel 321 / 321H Stud Bolts are extensively used in high-temperature and corrosive settings where stability and durability are crucial. They are perfect for aerospace components, chemical processing equipment, exhaust systems, heat exchangers, and refinery plants. Additionally, they find frequent application in power generation, furnace parts, and thermal oxidizers due to their ability to maintain mechanical strength at elevated temperatures. Their exceptional corrosion resistance and long-lasting performance make them a go-to choice for critical fastening needs in marine, petrochemical, and engineering sectors.
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