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Brian Fasteners, Houston, USA, is a prominent manufacturer and exporter of ASTM A193 B8 CL5 Stud Bolts to diverse industrial sectors. Renowned for precision engineering, high quality, and punctual delivery, Brian Fasteners provides products of the highest international standards. Their quest for excellence has made them a reliable partner in the oil and gas, petrochemical, and construction industries. With advanced manufacturing units and a trained workforce, they deliver robust and dependable fastening solutions that are customized to client requirements and harsh environments of service.
ASTM A193 B8 CL5 Stud Bolts are manufactured from AISI 316 stainless steel and are solution-treated and strain-hardened. Chemical composition is Chromium (16.0–18.0%), Nickel (10.0–14.0%), and Molybdenum (2.0–3.0%) for enhanced corrosion resistance. These bolts have high tensile strength, at least 125 ksi, and yield strength of 100 ksi. They possess good mechanical properties, making them suitable for use in applications under high temperature and pressure. They also possess good toughness and ductility and retain performance in rough and corrosive operating 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 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 CL5 Stud Bolts are mostly applied where high strength and excellent corrosion resistance are important. They find extensive use in the oil and gas, petrochemical, power generation, and marine sectors. They are perfectly suited for pressure vessel flanged joints, heat exchangers, valves, and pipeline systems. Their ability to resist chloride-induced stress corrosion cracking means that they can be used in offshore and chemical processing environments. Their high durability and reliability also mean that they are best suited for structural and mechanical assemblies that are subject to harsh conditions.
At Brian Fasteners, ASTM A193 B8 CL5 stud bolts are meticulously packaged to ensure safe delivery and maintain product integrity. Each stud bolt is individually inspected and protected with anti-corrosion coatings before being securely packed in sturdy, labeled boxes or crates. Custom packaging options are available to meet specific requirements. Our packaging process safeguards against damage during transit, ensuring that you receive high-quality, ready-to-use fasteners that meet your exacting standards.
Brian Fasteners is a leading manufacturer and supplier of high-quality fasteners in Houston , USA, with over 8 years of experience serving global industries.
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