Home > ASTM A193 B8 CL4 Stud bolts
Majid Fasteners is a leading manufacturer and supplier of high-quality ASTM A193 B8 CL4 stud bolts in Dubai, UAE, serving diverse industries with precision-engineered fastening solutions. Known for our commitment to excellence, we offer reliable, corrosion-resistant stainless steel stud bolts designed to meet stringent international standards. Our advanced manufacturing facilities, skilled workforce, and strict quality control ensure durable and high-performance products suitable for critical applications in oil & gas, petrochemical, construction, and power industries. With a strong focus on customer satisfaction, timely delivery, and competitive pricing, Majid Fasteners has earned a trusted reputation across the region.
ASTM A193 B8 CL4 stud bolts are manufactured from strain-hardened stainless steel Grade 304, containing approximately 18% chromium and 8% nickel for excellent corrosion resistance and strength. Their mechanical properties include high tensile strength, improved hardness, and superior durability suited for high-temperature and high-pressure environments. With enhanced yield strength and reliable performance under stress, B8 CL4 stud bolts are widely used in petrochemical, power, and refinery applications. These properties make them a preferred fastening product for ensuring long-lasting, secure connections in demanding industrial conditions.
Material | Specification | Standards | Size | Length |
ASTM A193 B8 CL4 Stud Bolt
| IS BS ASTM | DIN, ISO, JIS, GB, IS, BS, ASTM | M 02 to M 160 | 3 mm to 200 mm |
| 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 |
ASTM A193 B8 CL4 stud bolts are widely used in industries that require high-strength, corrosion-resistant fasteners capable of withstanding extreme temperatures and pressures. These stud bolts are commonly applied in oil and gas refineries, petrochemical plants, power generation facilities, and chemical processing units. They are ideal for securing flanges, valves, pressure vessels, heat exchangers, and pipeline systems. Their superior durability and resistance to oxidation make them suitable for both onshore and offshore environments. Additionally, B8 CL4 stud bolts are used in construction, marine engineering, and other heavy-duty applications where reliability and long-lasting performance are essential.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
