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Houston, USA-based Brian Fasteners is a reliable manufacturer and supplier of high-performance ASTM A193 B8 CL2 fasteners. The company has a strong focus on quality and accuracy and offers a broad variety of fasteners designed to cater to the stringent requirements of industrial applications. The ASTM A193 B8 CL2 fasteners offered by the company are made from superior-quality materials and are in accordance with international standards for providing reliability, durability, and resistance to corrosion. Specializing in timely delivery and technical proficiency, Brian Fasteners has established itself as a trusted ally to customers of petrochemical, energy, construction, and heavy engineering businesses within the United States and overseas.
ASTM A193 B8 CL2 fasteners consist of strain-hardened AISI 304 stainless steel for enhanced strength. The composition contains chromium (18–20%) and nickel (8–12%), providing superior corrosion resistance. These fasteners have better mechanical properties, such as a tensile strength of 125 ksi minimum and a yield strength of 100 ksi minimum. The higher strength of Class 2 fasteners places them in high-temperature and high-pressure applications. They also retain ductility and resistance to intergranular corrosion with high stringent mechanical and chemical requirements prescribed by ASTM A193 specifications.
| Element | B7 | B8 CL2 | B8 CL2M |
| 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 CL2 Class 1 | All | 75 | 30 | 30 | 50 |
| B8 CL2M Class 1 | All | 75 | 30 | 30 | 50 |
| B8 CL2 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 | |
| B8 CL2M Class 2 | Up to 3/4 | 110 | 95 | 15 | 45 |
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Material |
Specification |
Standards |
Size
|
Length |
|
ASTM A193 B8 CL2 Fasteners
|
IS
BS
ASTM
|
DIN, ISO, JIS, GB, IS, BS, ASTM |
M 02 to M 160
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3 mm to 200 mm
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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 CL2 bolts are commonly utilized in applications requiring high strength, resistance to corrosion, and heat endurance. They are well-suited for applications in petrochemical processing plants, oil and gas refineries, power generation plants, and marine environments. The fasteners are standardly used in pressure vessels, heat exchangers, valves, and flanged fittings, where long and secure connections are essential. Their augmented mechanical hardness and environmental resilience enable them to be used for both onshore and offshore applications, and they play a significant role in the integrity and safety of heavy-duty industrial systems and complex infrastructures.
At Brian Fasteners, the ASTM A193 B8 CL2 fasteners are carefully packaged to ensure they reach you in pristine condition. Each binder is carefully packaged in durable, corrosion-resistant packaging to prevent damage during transport. Clear labeling on each product ensures easy identification and follow-up. We offer customizable packaging to meet your specific needs, ensuring convenience and efficiency in handling and storage. Trust Brian Fasteners provide safe, reliable delivery of critical fastening solutions.
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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