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Yasin Fasteners, located in Istanbul, Turkey, has built a solid reputation as a reliable manufacturer and supplier of top-notch fasteners, including the highly regarded ASTM A193 B8 CL4 Stud Bolts. Known for their precision engineering and strict adherence to international standards, Yasin Fasteners delivers products that guarantee reliability, durability, and outstanding performance even in the toughest conditions. Their ASTM A193 B8 CL4 Stud Bolts are crafted using cutting-edge techniques and high-quality materials, specifically designed for industries that demand strong fastening solutions. With a strong focus on quality and customer satisfaction, Yasin Fasteners caters to clients worldwide, providing fasteners that blend strength, corrosion resistance, and long-lasting reliability for critical applications.
These ASTM A193 B8 CL4 Stud Bolts are primarily made from high-grade stainless steel, particularly austenitic stainless steel with a controlled carbon content to boost corrosion resistance. They showcase remarkable mechanical properties, such as high tensile strength, hardness, and resistance to stress corrosion cracking. These bolts remain stable even under high temperatures and harsh chemical environments, making them ideal for industrial applications where strength and durability are paramount. The CL4 variant offers enhanced fatigue resistance and toughness, ensuring dependable performance in structural, pressure vessel, and high-pressure piping systems while maintaining precise dimensional accuracy and consistent thread integrity.
| Element | B8 CL3 | B8 CL3 | B8M CL3 |
| Carbon | 0.37 – 0.49% | 0.08% max | 0.08% max |
| Manganese | 0.65 – 1.10% | 2.00% max | 2.00% max |
| Phosphorus, max | 0.035% | 0.045% | 0.045% |
| Sulfur, max | 0.040% | 0.030% | 0.030% |
| Silicon | 0.15 – 0.35% | 1.00% max | 1.00% max |
| Chromium | 0.75 – 1.20% | 18.0 – 20.0% | 16.0 – 18.0% |
| Nickel | 8.0 – 11.0% | 10.0 – 14.0% | |
| Molybdenum | 0.15 – 0.25% | 2.00 – 3.00% |
| Grade | Size | Tensile ksi, min | Yield, ksi, min | Elong, %, min | RA % min |
| B8 CL3 | Up to 2-1/2 | 125 | 105 | 16 | 50 |
| 2-5/8 – 4 | 115 | 95 | 16 | 50 | |
| 4-1/8 – 7 | 100 | 75 | 18 | 50 | |
| B8 CL3 Class 1 | All | 75 | 30 | 30 | 50 |
| B8M CL3 Class 1 | All | 75 | 30 | 30 | 50 |
| B8 CL3 Class 2 | Up to 3/4 | 125 | 100 | 12 | 35 |
| 7/8 – 1 | 115 | 80 | 15 | 35 | |
| 1-1/8 – 1-1/4 | 105 | 65 | 20 | 35 | |
| 1-3/8 – 1-1/2 | 100 | 50 | 28 | 45 | |
| B8M CL3 Class 2 | Up to 3/4 | 110 | 95 | 15 | 45 |
| 7/8 – 1 | 100 | 80 | 20 | 45 | |
| 1-1/8 – 1-1/4 | 95 | 65 | 25 | 45 | |
| 1-3/8 – 1-1/2 | 90 | 50 | 30 | 45 |
Material | Specification | Standards | Size | Length |
ASTM A193 B8 CL4 Stud Bolt
| IS BS ASTM | DIN, ISO, JIS, GB, IS, BS, ASTM | M 02 to M 160 | 3 mm to 200 mm |
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You’ll find ASTM A193 B8 CL4 Stud Bolts widely utilized in sectors like oil and gas, petrochemical, power generation, and chemical processing, where secure and durable fastening is essential. They are frequently used in pressure vessels, heat exchangers, boilers, and pipelines to endure high pressure, temperature changes, and corrosive conditions. These stud bolts ensure reliable joint integrity in flange connections, mechanical assemblies, and critical infrastructure projects. Their corrosion resistance and mechanical strength make them a go-to choice for demanding applications.
At Yasin Fasteners, we prioritize the secure packaging of our ASTM A193 B8 CL4 stud bolts to ensure they reach you in optimal condition. Each stud bolt is carefully inspected and packaged using robust, protective materials to prevent damage during transit. Our packaging solutions include detailed labeling for easy identification and handling. Whether you’re ordering small quantities or bulk, we provide customized packaging options to meet your needs, guaranteeing the safe and efficient delivery of your fasteners.
Yasin Fasteners is a leading manufacturer and supplier of high-quality fasteners in Istanbul, Turkey, with over 8 years of experience serving global industries.
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