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ASTM A193 B8 CL5 Stud Bolts find their place in various industries that need high-strength, corrosion-resistant fasteners for tough applications. You’ll often see them in chemical processing plants, petrochemical refineries, oil and gas facilities, and power generation units. These stud bolts are perfect for securing flanges, valves, heat exchangers, pressure vessels, and piping systems, ensuring everything stays tightly fastened even in the most challenging environments.
ASTM A193 B8 CL5 Stud Bolts are crafted from austenitic stainless steel, which is equivalent to Type 304, and are strain-hardened to meet Class 5 specifications. This unique composition offers outstanding resistance to corrosion and oxidation. On the mechanical side, these stud bolts boast impressive tensile and yield strength, along with good toughness and excellent fatigue resistance. They maintain their shape even under high temperatures and heavy loads. The blend of enhanced strength and corrosion resistance ensures that ASTM A193 B8 CL5 Stud Bolts provide long-lasting reliability and durability in demanding high-pressure and high-temperature industrial settings.
| 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 find their place in various industries that need high-strength, corrosion-resistant fasteners for tough applications. You’ll often see them in chemical processing plants, petrochemical refineries, oil and gas facilities, and power generation units. These stud bolts are perfect for securing flanges, valves, heat exchangers, pressure vessels, and piping systems, ensuring everything stays tightly fastened even in the most challenging environments.
At Ramu Fasteners, ASTM A193 B8 CL5 stud bolts are meticulously packaged to ensure safe delivery and maintain product integrity. Each stud bolt is individually inspected and protected with anti-corrosion coatings before being securely packed in sturdy, labeled boxes or crates. Custom packaging options are available to meet specific requirements. Our packaging process safeguards against damage during transit, ensuring that you receive high-quality, ready-to-use fasteners that meet your exacting standards.
Ramu Fasteners is a leading manufacturer and supplier of high-quality fasteners in Hyderabad, India, with over 8 years of experience serving global industries.
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