Home > Stud Bolts > Stainless Steel 321 / 321H Stud Bolts
MERIH STAINLESS, located in Istanbul, Turkey, stands out as a top manufacturer and supplier of high-quality Stainless Steel 321 and 321H Stud Bolts. Known for their precision engineering and durability, this company meets a wide range of industrial needs, providing products that offer excellent corrosion resistance alongside impressive mechanical strength. By employing cutting-edge manufacturing techniques and rigorous quality control, MERIH STAINLESS guarantees consistent performance and reliability in every stud bolt they produce. With a solid reputation among clients in the chemical, petrochemical, and marine sectors, the company delivers solutions that adhere to international standards, solidifying its status as a trusted source for premium stainless steel fasteners.
Stainless Steel 321 and 321H Stud Bolts are austenitic alloys that are stabilized with titanium to prevent intergranular corrosion. They mainly consist of chromium (17–19%), nickel (9–12%), and titanium (as a stabilizer), with 321H featuring lower carbon content for better high-temperature performance. These stud bolts are known for their excellent tensile and yield strength, outstanding creep resistance, and good toughness even at elevated temperatures. Their thermal stability makes them perfect for high-heat applications, while their corrosion resistance ensures they last long in oxidizing and mildly acidic environments, maintaining their mechanical integrity even under prolonged stress and thermal cycling.
| 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.
Merih 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.
You’ll find Stainless Steel 321 and 321H Stud Bolts widely used in industries that demand fasteners capable of withstanding high temperatures and corrosion. They’re commonly found in chemical processing plants, petrochemical equipment, pressure vessels, heat exchangers, boilers, and refinery units. Their remarkable oxidation resistance and dimensional stability under thermal stress make them ideal for high-temperature piping systems and exhaust systems in power plants. Plus, these bolts are also suitable for food processing and pharmaceutical equipment, where hygiene and corrosion resistance are paramount. Their reliability and durability in challenging environments make them a go-to choice for many industries.
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