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Hamad Fasteners, located in Riyadh, Saudi Arabia, stands out as a top-notch manufacturer and supplier of high-quality fastening solutions that meet international standards. The company caters to essential industries such as oil & gas, petrochemical, power generation, marine, and construction, providing products that are both durable and high-performing. Among their specialized offerings, the ASTM A193 B8 CL5 Stud Bolts are particularly esteemed for their remarkable strength, resistance to corrosion, and reliability in high-temperature settings. These stud bolts are crafted to ensure safe, stable, and long-lasting connections in even the most demanding industrial applications.
Made from austenitic stainless steel that includes iron, chromium, and nickel, ASTM A193 B8 CL5 Stud Bolts boast outstanding resistance to oxidation and corrosion, even when exposed to elevated temperatures. They undergo a solution treatment process to boost their tensile strength, hardness, and overall durability. With a tensile strength ranging from about 75 to 100 ksi, these bolts deliver excellent toughness and mechanical performance, making them ideal for high-pressure and high-temperature industrial uses.
| 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 Stud Bolt
| IS BS ASTM | DIN, ISO, JIS, GB, IS, BS, ASTM | M 02 to M 160 | 3 mm to 200 mm |
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ASTM A193 B8 CL5 stud bolts are widely used in critical industrial applications requiring high strength and corrosion resistance. They are ideal for pressure vessels, heat exchangers, and piping systems in the oil and gas, chemical, and power generation industries. Their ability to withstand extreme temperatures and aggressive environments makes them suitable for applications like steam turbines, reactor vessels, and high-pressure valves. These stud bolts ensure secure and reliable connections in demanding operational settings.
These stud bolts find their place in industries that demand secure fastening under extreme conditions. They’re commonly utilized in petrochemical plants, refineries, power generation facilities, and marine environments where corrosion and thermal stress resistance are crucial. Typical applications include turbines, boilers, heat exchangers, pressure vessels, and flanges, ensuring stable and leak-proof connections. The ASTM A193 B8 CL5 Stud Bolts guarantee reliable, long-term performance, safety, and durability in harsh industrial settings.
Hamad Fasteners is one of the Industrial suppliers and manufacturers of quality fasteners in Riyadh, Saudi Arabia, that has spent more than 12 years serving various industries.
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