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Yasin Fasteners, located in Istanbul, Turkey, has earned a solid reputation as a reliable manufacturer and supplier of ASTM A193 B8 CL5 Bolts, providing top-notch fastening solutions to industries around the globe. Known for their commitment to precision engineering and unwavering quality, Yasin Fasteners produces bolts that adhere to international standards for durability and reliability. Thanks to their advanced manufacturing techniques and rigorous quality control, they ensure that their products consistently perform well in even the toughest environments. Focused on serving sectors like petrochemical, construction, and power generation, Yasin Fasteners is dedicated to fostering long-lasting relationships with clients by offering high-strength, corrosion-resistant bolts that deliver dependable service across critical applications worldwide.
ASTM A193 B8 CL5 Bolts are crafted from austenitic stainless steel, mainly alloy 304, which is stabilized with columbium (niobium) to boost resistance against carbide precipitation. These bolts showcase impressive tensile strength, outstanding corrosion resistance, and excellent creep resistance at high temperatures. Typically, they have a minimum tensile strength of 100 ksi and a yield strength of 65 ksi, ensuring reliable performance under mechanical stress. Their well-balanced chemical makeup of chromium and nickel provides exceptional oxidation resistance, making them ideal for both high-pressure and high-temperature service conditions.
| Element | B8 CL5 | B8 CL5 | B8M CL5 |
| 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 CL5 | 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 CL5 Class 1 | All | 75 | 30 | 30 | 50 |
| B8M CL5 Class 1 | All | 75 | 30 | 30 | 50 |
| B8 CL5 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 CL5 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 CL5 Bolt
| IS BS ASTM | DIN, ISO, JIS, GB, IS, BS, ASTM | M 02 to M 160 | 3 mm to 200 mm |
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.
You’ll find ASTM A193 B8 CL5 Bolts widely used in industries that require strength, stability, and corrosion resistance in harsh environments. They are commonly found in power generation plants, chemical processing facilities, and oil and gas refineries, where they often face heat and corrosive substances. These bolts are also essential in pressure vessels, boilers, and heat exchangers due to their high creep and tensile strength. Furthermore, they are suitable for marine and offshore structures, pipelines, and heavy construction projects, ensuring long-lasting reliability and safety in critical, high-stress situations.
At Yasin Fasteners, we ensure that ASTM A193 B8 CL5 bolts are expertly packaged to preserve their quality and prevent damage during transit. Each bolt is carefully inspected and coated with anti-corrosion treatments before being packed in robust, labeled boxes or crates. Our packaging is designed to meet specific client requirements and safeguard the bolts from environmental factors. With attention to detail and precision, we guarantee that your bolts arrive in perfect condition, ready for immediate use.
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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