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Amin Fasteners, located in Safat, Kuwait, has built a solid reputation as a top-notch manufacturer and supplier of high-quality industrial fasteners. Their lineup features ASTM A193 B8 CL4 Stud Bolts, which are specifically designed to excel in high-temperature, high-pressure, and highly corrosive settings. These stud bolts are crafted with precision to guarantee reliable joint integrity and impressive durability in critical applications. Amin Fasteners places a strong emphasis on rigorous quality control, prompt delivery, and ensuring customer satisfaction, making them a go-to choice for industries that demand high-performance fastening solutions. Each ASTM A193 B8 CL4 Stud Bolt is engineered to meet international standards, ensuring consistent performance even in the toughest conditions.
Made from austenitic stainless steel enriched with chromium, nickel, and molybdenum, ASTM A193 B8 CL4 Stud Bolts offer exceptional corrosion resistance and mechanical strength. They undergo solution annealing to enhance toughness, ductility, and fatigue resistance, making them perfect for extreme industrial environments. These stud bolts provide moderate tensile strength while excelling in resisting oxidation, chemical exposure, and high temperatures. Their unique blend of durability, strength, and corrosion resistance guarantees reliable and long-lasting performance in critical bolted connections.
| 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 |
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.
ASTM A193 B8 CL4 stud bolts are widely used in high-pressure and high-temperature environments, such as in the oil and gas, petrochemical, and power generation industries. They are essential for securing flanges, valves, and other critical components in reactors, turbines, and pipelines. Their superior strength and corrosion resistance make them suitable for demanding applications where reliability and durability are crucial. These stud bolts ensure the integrity and performance of machinery and infrastructure under extreme conditions.
You’ll find ASTM A193 B8 CL4 Stud Bolts widely utilized across various sectors, including chemical processing, petrochemical, oil and gas, power generation, and marine industries. They’re perfect for fastening flanges, pressure vessels, pipelines, and other essential equipment where mechanical strength and corrosion resistance are crucial. These stud bolts are also frequently used in refineries, boilers, and high-stress industrial assemblies. With their outstanding mechanical properties, heat resistance, and chemical durability, they are vital for ensuring safe, secure, and long-lasting bolted connections in demanding industrial applications.
Amin Fasteners is a leading manufacturer and supplier of high-quality fasteners in Safat, Kuwait, with over 8 years of experience serving global industries.
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