Home > Stud Bolts > Stainless Steel 321 / 321H Stud Bolts
Weston Stainless, based in Midland, UK, is a leading supplier of high-quality stainless steel products, serving industries like oil & gas, petrochemicals, construction, and marine. Committed to precision and durability, Weston Stainless provides corrosion-resistant solutions that meet international standards. Among its offerings, Stainless Steel 321 / 321H Stud Bolts are widely used for high-temperature applications. Made from titanium-stabilized austenitic stainless steel, these stud bolts offer excellent resistance to oxidation and intergranular corrosion. Available in various shapes, including full-threaded and double-ended, they ensure high strength and durability, making them ideal for critical industrial applications.
Stainless Steel 321 / 321H Stud Bolts are composed of iron, chromium (17-19%), nickel (9-12%), and titanium (≥5xC%), which enhances stability against carbide precipitation. The 321H variant has higher carbon content for improved high-temperature strength. These stud bolts offer excellent mechanical properties, with a tensile strength of around 515 MPa, yield strength of 205 MPa, and elongation of 40%. Their physical properties include a density of 7.9 g/cm³ and a melting point of 1398-1421°C. These properties make them ideal for high-temperature, oxidation-resistant, and pressure-intensive applications in various industries.
| 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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High-strength, corrosion-resistant fasteners made from titanium-stabilized stainless steel, ideal for high-temperature and pressure-intensive industrial applications.
High-strength, heat-resistant fasteners with enhanced carbon content, providing excellent durability, oxidation resistance, and reliability in high-temperature industrial applications.
High-temperature, corrosion-resistant fasteners with enhanced carbon content, ensuring superior strength, durability, and oxidation resistance in exhaust and heat-intensive applications.
Stainless Steel 321 / 321H Stud Bolts are widely used in industries requiring high-temperature strength and corrosion resistance. They are essential in aerospace, chemical processing, and power generation due to their ability to withstand oxidation and thermal cycling. These stud bolts are commonly used in heat exchangers, exhaust systems, refineries, and boilers, where exposure to high heat is frequent. Additionally, they are ideal for marine, automotive, and pharmaceutical applications, ensuring durability in aggressive environments. Their excellent mechanical properties make them suitable for fastening components in high-pressure and high-temperature conditions.
Stainless Steel 321 / 321H Stud Bolts come with essential test certificates such as Mill Test Certificates (MTC), third-party inspection reports, and compliance certificates like EN 10204 3.1/3.2, ensuring quality and authenticity. These stud bolts are securely packaged in wooden crates, cartons, or bubble-wrapped bundles to prevent damage during transit. Proper labeling with specifications and batch details ensures traceability. Delivery is prompt and reliable, catering to global demands through air, sea, or road transport, ensuring safe and efficient shipment to industries requiring high-quality fastening solutions.
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