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Murad Fasteners stands out as a trusted manufacturer and supplier based in Doha, Qatar, specializing in top-notch ASTM A193 B8 CL3 Stud Bolts that are perfect for tough industrial applications. With state-of-the-art manufacturing facilities and rigorous quality control measures, Murad Fasteners delivers stud bolts that boast precise threading, exceptional dimensional accuracy, and reliable performance. These bolts are crafted to meet international standards, ensuring they hold up well in both corrosive and high-temperature settings. Catering to the oil and gas, petrochemical, power generation, and industrial sectors, Murad Fasteners is committed to providing tailored solutions, competitive pricing, and prompt delivery.
The ASTM A193 B8 CL3 Stud Bolts are made from austenitic stainless steel, comparable to Type 304, and are solution annealed and strain hardened to enhance their strength. Their composition includes chromium and nickel, which contribute to their impressive resistance to corrosion and oxidation. Mechanically, Class 3 stud bolts deliver superior tensile and yield strength compared to standard B8 grades, along with outstanding toughness and ductility. They maintain their mechanical stability even under high temperatures and sustained loads, ensuring dependable performance in demanding service conditions.
| 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 CL3 StudBolt | IS BS ASTM | DIN, ISO, JIS, GB, IS, BS, ASTM | M 02 to M 160 | 3 mm to 200 mm |
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These ASTM A193 B8 CL3 Stud Bolts are widely utilized in scenarios that require 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. Their design makes them perfect for assemblies that face high pressure, thermal stress, and corrosive environments. With their durability, strength, and extended service life, they are an excellent choice for critical industrial fastening needs.
At Murad Fasteners, ASTM A193 B8 CL3 stud bolts are meticulously packaged to ensure optimal protection during transit and storage. Each bolt is individually wrapped in anti-corrosive material and securely placed in durable, custom-sized boxes to prevent damage. The packaging is clearly labeled with product specifications and handling instructions for easy identification. Our commitment to careful packaging helps maintain the integrity and quality of the fasteners, ensuring they arrive in perfect condition and ready for 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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