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Murad Fasteners stands out as a reliable manufacturer and supplier based in Doha, Qatar, specializing in high-quality ASTM A193 B8 CL5 Bolts that are perfect for high-strength and corrosive environments. With state-of-the-art manufacturing facilities and rigorous quality control measures, Murad Fasteners ensures that their bolts feature precise threading, outstanding dimensional accuracy, and consistent mechanical performance. These bolts are crafted to meet international standards and the specific demands of various projects. Catering to industries such as oil and gas, petrochemical, power generation, and heavy engineering, Murad Fasteners offers tailored solutions, competitive pricing, and dependable delivery.
The ASTM A193 B8 CL5 Bolts are made from austenitic stainless steel, akin to Type 304, and are solution annealed and strain hardened to boost their strength. The combination of chromium and nickel gives them excellent resistance to corrosion and oxidation. Mechanically, Class 5 bolts provide superior tensile and yield strength compared to standard B8 grades, along with remarkable toughness and ductility. They maintain their mechanical integrity even under high temperatures, sustained loads, and pressure, ensuring they perform reliably in challenging service conditions.
| Element | B8 CL5 | B8 CL5 | B8M CL5 |
| 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 CL5 | 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 CL5 Class 1 | All | 75 | 30 | 30 | 50 |
| B8M CL5 Class 1 | All | 75 | 30 | 30 | 50 |
| B8 CL5 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 CL5 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 CL5 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 CL5 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 sectors. Their design makes them perfect for assemblies that face high pressure, thermal stress, and corrosive environments. With their durability, mechanical reliability, and long service life, they are an excellent choice for critical industrial fastening needs.
At Murad Fasteners, we ensure that ASTM A193 B8 CL5 bolts are expertly packaged to preserve their quality and prevent damage during transit. Each bolt is carefully inspected and coated with anti-corrosion treatments before being packed in robust, labeled boxes or crates. Our packaging is designed to meet specific client requirements and safeguard the bolts from environmental factors. With attention to detail and precision, we guarantee that your bolts arrive in perfect condition, ready for immediate use.
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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