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Ramu Fasteners is a trusted manufacturer and supplier of top-notch Stainless Steel 442 Bolts, proudly based in Hyderabad, India. The company focuses on crafting high-strength fasteners that are perfect for tough mechanical and high-temperature applications. Using premium-grade martensitic stainless steel and cutting-edge production methods, Ramu Fasteners’ Stainless Steel 442 Bolts deliver outstanding dimensional accuracy, durability, and reliable performance. With a strong commitment to quality control and adherence to international standards, the company provides fastening solutions to the power, oil & gas, and heavy engineering sectors, both domestically and globally.
These Stainless Steel 442 Bolts are crafted from martensitic stainless steel, which contains about 18–23% chromium along with a carefully controlled carbon content. This unique blend offers impressive corrosion resistance, along with high hardness and strength after heat treatment. These bolts showcase remarkable tensile and yield strength, excellent wear resistance, and good oxidation resistance even at elevated temperatures. Plus, Stainless Steel 442 Bolts maintain their dimensional stability and mechanical integrity under high loads, pressure, and thermal conditions.
| 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 Bolts are a go-to choice for situations that demand high strength and heat resistance. You’ll often find them in power generation equipment, boilers, turbines, and thermal systems. In the oil and gas, petrochemical, and refinery sectors, these bolts play a crucial role in flanges, valves, and pressure-containing components. They’re also perfect for heavy machinery, pumps, compressors, and various industrial assemblies. Plus, Stainless Steel 442 Bolts are essential in structural and engineering projects where durability, strength, and resistance to high temperatures are key.
Our stainless steel 422 bolts are carefully mounted to ensure damage-free delivery. By using standard export packaging in sturdy wooden boxes or as needed to meet exacting standards, we prioritize the safety of every bolt when we are transporting it. Each bolt is clearly marked with its grade, size and lot number, and can be customized upon request. To ensure quality and compliance, we provide manufacturer test certificates, raw material certificates, NABL approved laboratory test reports, 100% radiography test reports, and third parties inspection according to EN 10204-3.1 and EN 10204-3.2 standard reports for. This guarantee ensures that every stainless steel 422 bolt meets the industry’s stringent standards and customer expectations for reliability and performance.
Ramu Fasteners is a leading manufacturer and supplier of high-quality fasteners in Hyderabad, India, with over 8 years of experience serving global industries.
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