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Brian Fasteners, a Houston-based USA company, is a top manufacturer and supplier of high-quality ASTM A193 B8C bolts. Recognized for precision engineering and close observation of industry standards, Brian Fasteners offers reliable fastening solutions for critical applications in different industries. With an emphasis on customer satisfaction, timely delivery, and consistent product performance, the firm has established a reliable reputation in local and global markets. Their ASTM A193 B8C bolts are made with premium materials, ensuring corrosion resistance and durability, and are perfectly suited for high-temperature and high-pressure applications in petrochemical and power generation sectors.
ASTM A193 B8C bolts are made from columbium stabilized alloy 347 stainless steel that provides better corrosion resistance and strength at elevated temperatures. Their chemical make-up is chromium (17–20%), nickel (9–13%), and columbium plus tantalum (10xC minimum). These bolts have outstanding mechanical characteristics: a minimum of 75 ksi tensile strength, 30 ksi yield strength, 30% elongation, and Brinell hardness less than 223 HB. Heat treated and solution annealed, they can be used in harsh environments, providing improved mechanical stability and assured performance in corrosive or high-stress situations.
| Element | B7 | B8 | B8M |
| 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 |
| B7 | 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 Class 1 | All | 75 | 30 | 30 | 50 |
| B8M Class 1 | All | 75 | 30 | 30 | 50 |
| B8 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 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 B8C 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 B8C bolts find extensive applications in high-strength and corrosion-resistant industries in high-temperature applications. Their mechanical integrity and high-strength composition render them perfect for use in pressure vessels, heat exchangers, boilers, and piping systems in power generation, petrochemical, and oil & gas industries. They are also vital in marine environments and chemical process facilities where intergranular corrosion and oxidation resistance is paramount. Because of their reliability and endurance, B8C bolts are often applied in applications where performance and safety are critical, particularly in systems that are heat- and corrosive-medium-exposed.
At Brian Fasteners, we prioritize the secure and efficient packaging of ASTM A193 B8C bolts to ensure their safe delivery and optimal condition upon arrival. Each bolt is carefully packed in high-quality, durable containers that protect against damage and contamination. Our packaging includes clear labeling for easy identification and handling. We offer customized packaging solutions to meet specific client needs, ensuring that every order arrives intact and ready for use in demanding industrial applications.
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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