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Punit Fasteners, a well-respected manufacturer and supplier located in Delhi, India, is known for its top-notch Stainless Steel 321 / 321H Stud Bolts, which cater to a wide range of industrial needs. These stud bolts are meticulously crafted to ensure they perform exceptionally well in tough environments, boasting remarkable resistance to both high temperatures and corrosion. Built to comply with international standards, our 321 / 321H stud bolts are perfect for sectors such as petrochemical, power generation, and marine. With a strong emphasis on durability, precise dimensions, and prompt delivery, Punit Fasteners provides dependable fastening solutions for critical applications across various industries around the globe.
The Stainless Steel 321 / 321H Stud Bolts are made from titanium-stabilized austenitic stainless steels, containing 17–19% chromium, 9–12% nickel, trace amounts of titanium, and low carbon. The 321H version is particularly notable for its enhanced high-temperature strength, thanks to its higher carbon content. These stud bolts showcase impressive mechanical properties, including a tensile strength of approximately 515 MPa, yield strength of 205 MPa, and an elongation of 35%. With excellent oxidation resistance up to 900°C, they maintain their stability and toughness even in high-stress, elevated temperature situations, ensuring reliable performance in heat-intensive industrial operations.
| Grade | Stainless Steel 321 |
| 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 | 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 | 8.0 g/cm3 | 1454 °C (2650 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 40 % |
To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.
Stainless steel 321/321H stud bolts are used at high temperatures where strength and corrosion resistance are critical. They are ideal for aerospace, automotive exhaust systems and high-temperature gasoline engines. These stud bolts are also used in chemical plants because of their resistance to sulfuric and phosphoric acid. Their durable materials ensure reliability in harsh environments, making them essential for industrial applications that require durability and operation at high temperatures
Stainless Steel 321 / 321H Stud Bolts find extensive application in industries where high-temperature and corrosion resistance are essential. They are particularly suited for heat exchangers, boilers, exhaust manifolds, refineries, and chemical processing equipment. Their strength and oxidation resistance make them ideal for aerospace, power generation, and furnace components. Moreover, they are commonly used in petrochemical plants and marine settings due to their durability and resistance to intergranular corrosion. These stud bolts provide reliable fastening solutions for equipment that experiences thermal cycling and harsh environments, ensuring long-term stability and safety in critical engineering and structural applications.
Punit Fasteners is a leading manufacturer and supplier of high-quality fasteners in Delhi, India, with over 15 years of experience serving global industries.
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