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ASTM A193 B8 CL2 Stud Bolts are high-performance fasteners designed to provide superior corrosion resistance and reliable mechanical strength in demanding industrial applications. Manufactured from austenitic stainless steel in a strain-hardened Class 2 condition, these stud bolts are ideal for high-pressure and high-temperature operations. Industries such as chemical processing, power generation, petrochemical plants, and marine engineering rely on these fasteners for secure and durable connections. Their precision engineering and consistent quality ensure long-term performance, making ASTM A193 B8 CL2 Stud Bolts a trusted choice for critical equipment where safety, reliability, and resistance to aggressive environments are paramount.
ASTM A193 B8 CL2 Stud Bolts are made from austenitic stainless steel, typically Grade 304, enhanced through Class 2 strain-hardening for improved mechanical strength. The alloy includes chromium and nickel, providing excellent resistance to corrosion, oxidation, and stress corrosion cracking. These stud bolts offer higher tensile and yield strength than standard B8 fasteners while maintaining good ductility and hardness. Their mechanical properties remain stable under high temperatures and mechanical stress, ensuring dependable performance in demanding industrial environments such as high-pressure piping, flanged joints, and critical process equipment.
| 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 |
|
Material |
Specification |
Standards |
Size
|
Length |
|
ASTM A193 B8 CL2 StudBolt
|
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 CL2 Stud Bolts are widely employed in industries requiring both corrosion resistance and enhanced mechanical strength. They are ideal for high-pressure piping, boilers, heat exchangers, and pressure vessels in power plants and petrochemical facilities. Chemical processing units rely on them for safe, long-term fastening in corrosive environments, while marine and offshore applications benefit from their resistance to seawater and harsh atmospheric conditions. These stud bolts are also used in food, pharmaceutical, and water treatment plants due to their hygienic, non-reactive properties. Their durability and reliability make them a preferred choice for critical industrial applications.
We ensure that the ASTM A193 B8 CL2 Stud Bolts are installed with the utmost care. Each bolt is thoroughly inspected and sealed with durable, waterproof material to prevent damage during transport. Our packaging includes clear labeling to make it easy to find and follow. Whether you need a bulk shipment or a customized packaging solution, we guarantee that your bolts will arrive in perfect condition, ready for immediate use in your application of the importance of the.
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