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Houston, USA-based Brian Fasteners is a prominent maker and supplier of high-strength ASTM A193 B8 CL5 bolts. Renowned for their precision-made quality and durability, these bolts are designed to adhere to strict industry specifications, providing consistent performance in extreme conditions. By employing the latest manufacturing techniques and adhering to high standards of excellence, Brian Fasteners provides products that serve critical applications in diverse industries. Their knowledge and reliable quality render them a go-to source for companies needing high-quality fastening products to meet strict specifications and unforgiving conditions.
ASTM A193 B8 CL5 bolts consist mainly of austenitic stainless steel (Type 304), fortified with 5% molybdenum for enhanced corrosion resistance. Such bolts feature high tensile strength and toughness, often with a minimum tensile strength of 75,000 psi. Their mechanical characteristics involve resistance to oxidation and scaling at high temperatures, which renders them compatible for use in high-stress and corrosive conditions. Incorporation of molybdenum enhances their resistance to chloride-induced pitting and crevice corrosion, which translates to durable performance in applications in industries.
| 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.
ASTM A193 B8 CL5 bolts are popularly applied in industries that demand corrosion-resistant as well as high-strength fasteners. Typical uses include petrochemical facilities, oil and gas piping, power generation equipment, and chemical processing units. Their corrosion and heat resistance renders them a preferred choice for fastening flanges, valves, and pressure vessels that work under hot temperature and corrosive conditions. They are also used in marine and offshore platforms where saltwater exposure necessitates exceptional toughness. Their dependability and lifespan guarantee safety and reliability in high-stakes industrial joints.
At Brian 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.
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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