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Brian Fasteners, Houston, USA, is a reliable manufacturer and supplier of high-quality ASTM A193 B8 CL3 bolts. Known for precise engineering and compliance with international standards, Brian Fasteners supplies robust fastening solutions specifically designed for extreme industrial applications. Their large stockholding and focus on quality guarantee faultless performance in harsh conditions. With a strong emphasis on on-time delivery and customer satisfaction, Brian Fasteners has established itself as a reliable partner in the fastener business, catering to industries like oil & gas, power generation, petrochemicals, and heavy machinery in the United States and internationally.
bolts, made from austenitic stainless steel, offer excellent resistance to corrosion and high-temperature environments, making them ideal for critical applications in the petrochemical, power generation, and construction industries. With a commitment to quality and precision, Brian Fasteners ensures reliable, durable fastening solutions to meet the stringent requirements of various industrial projects.
ASTM A193 B8 CL3 bolts are produced from austenitic stainless steel, AISI 304, and are strain-hardened for increased strength. These bolts have about 18% chromium and 8% nickel, with minor residues of carbon, manganese, and sulfur. Class 3 specifies greater tensile strength than Class 1, with a minimum tensile strength of 125 ksi. They show also superior resistance to oxidation and corrosion and are apt for high-temperature and high-pressure service. Their mechanical strength guarantees long-term functionality in structurally important assemblies and harsh operating conditions.
| 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 CL3 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 CL3 bolts are used extensively in industrial applications of high stress because of their high strength and corrosion resistance. Their applications are found in petrochemical plants, power plants, and oil & gas plants, where the bolts are used to hold together flanges, valves, and piping systems that operate under harsh conditions. Their suitability for high-pressure, high-temperature operations also makes them ideal for use in heat exchangers, boilers, and pressure vessels. Their stainless steel content guarantees durability and low maintenance, hence a perfect fit in infrastructure projects that need reliable and long-lasting fasteners.
At Brian Fasteners, we ensure that our ASTM A193 B8 CL3 bolts are meticulously packaged to maintain their integrity and quality during transit. Each bolt is carefully inspected and packed in sturdy, corrosion-resistant materials to prevent damage. Our packaging solutions include custom labeling and secure sealing, guaranteeing safe delivery and easy identification. Whether shipped locally or internationally, our packaging standards meet all regulatory requirements, ensuring our bolts arrive in perfect condition, ready for immediate use in your projects.
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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