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Rinku Fasteners, located in Kolkata, India, has built a solid reputation as a reliable manufacturer and supplier of top-notch fastening solutions, particularly Stainless Steel 442 Stud Bolts. Renowned for their precision engineering and exceptional durability, these stud bolts are crafted to meet stringent industrial standards, ensuring they deliver reliability and a long lifespan. Rinku Fasteners prioritizes quality control throughout the production process, from selecting raw materials to the final touches, providing customers with corrosion-resistant, high-strength fasteners that excel in demanding applications. With a commitment to innovation and customer satisfaction, the company caters to a variety of industries, making it a go-to choice for sturdy and trustworthy fastening solutions.
Stainless Steel 442 Stud Bolts are mainly made up of iron, chromium (17–19%), and nickel, with small amounts of molybdenum and carbon added to boost strength and resistance to corrosion. This type of austenitic-ferritic stainless steel is known for its impressive resistance to chloride-induced corrosion, making it perfect for tough environments. In terms of mechanics, these bolts showcase high tensile and yield strength, solid toughness, and remarkable fatigue resistance. They also maintain their shape under high temperatures and stress, ensuring dependable performance in critical industrial settings like chemical processing, marine applications, and petrochemical facilities.
| Component | Wt. % |
| C | 0.23 |
| Cr | 12.5 |
| Fe | 83 |
| Mn | 0.5 |
| Mo | 1 |
| Ni | 0.8 |
| P | 0.02 |
| S | 0.015 |
| Si | 0.38 |
| V | 0.23 |
| W | 1 |
| Mechanical Properties | Metric | English | Comments |
| Hardness, Brinell | 290 | 290 | Estimated from Rockwell C value for Brinell test with 3000 kg load/10 mm diameter ball |
| Hardness, Knoop | 315 | 315 | Estimated from Rockwell C value. |
| Hardness, Rockwell C | 30 | 30 | |
| Hardness, Vickers | 304 | 304 | Estimated from Rockwell C value. |
| Tensile Strength, Ultimate | 897 MPa | 130000 psi | |
| Tensile Strength, Yield | 828 MPa | 120000 psi | 0.2% Offset |
| Elongation at Break | 15 % | 15 % | |
| Reduction of Area | 40 % | 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 442 Stud Bolts find extensive use in industries that demand strong, corrosion-resistant fasteners. Their outstanding mechanical properties make them perfect for high-temperature and high-pressure situations, such as in chemical, petrochemical, and power generation plants. You’ll often see them used in flange connections, pressure vessels, and other critical applications where reliability is key.
Our stainless steel 442 stud bolts are optimized for undamaged travel through hardwood or hard boxes to international standards. Each bolt is uniquely marked with our grade, size and lot number to ensure traceability and quality assurance. We offer complete documentation, including EN 10204-3.1 and EN 10204-3.2 certificates, material certificates, NABL approved laboratory test reports, and professional test certificates. In addition, our quality control measures include 100% radiographic testing and third-party inspection reports to ensure that each stainless steel 442 stud bolt meets stringent industry requirements for reliability, strength and performance around.
Rinku Fasteners is a leading manufacturer and supplier of high-quality fasteners in Kolkata, India, with over 8 years of experience serving global industries.
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