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Murad Fasteners has established itself as a reliable manufacturer and supplier in Doha, Qatar, specializing in high-quality ASTM A193 B8 CL3 Bolts tailored for demanding industrial applications. With state-of-the-art manufacturing facilities and rigorous quality control measures, Murad Fasteners ensures that their bolts feature precise threading, accurate dimensions, and consistent performance. These bolts are crafted to meet international standards, making them dependable even in corrosive and high-temperature environments. Catering to sectors like oil and gas, petrochemical, power generation, and heavy engineering, Murad Fasteners offers customized solutions, competitive pricing, and prompt delivery to meet critical fastening requirements.
The ASTM A193 B8 CL3 Bolts are made from austenitic stainless steel, comparable to Type 304, and undergo processes like solution annealing and controlled strain hardening to boost their strength. This alloy, rich in chromium and nickel, provides excellent resistance to corrosion and oxidation. Mechanically, Class 3 bolts deliver superior tensile and yield strength compared to standard B8 grades, along with remarkable toughness and ductility. They maintain their mechanical stability even under sustained loads and high temperatures, ensuring reliable performance in challenging service 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.
These ASTM A193 B8 CL3 Bolts are extensively utilized in applications that demand enhanced strength and corrosion resistance. You’ll often find them in flanged joints, pressure vessels, heat exchangers, boilers, valves, and piping systems across the oil and gas, petrochemical, and power generation industries. They are particularly suited for assemblies that face high pressure, thermal stress, and corrosive environments. Thanks to their durability, strength, and long service life, these bolts are perfect for critical industrial fastening applications.
At Murad 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.
Murad Fasteners is a leading manufacturer and supplier of high-quality fasteners in Doha, Qatar, with over 8 years of experience serving global industries.
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