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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 designed to meet global standards. Known for their precision, strength, and reliability, this company provides products that industries can count on for high performance and durability. One of their standout offerings, the ASTM A193 B8 CL4 Stud Bolts, is particularly esteemed for its remarkable corrosion resistance, toughness, and ability to thrive in high-pressure and high-temperature settings. Produced under rigorous quality control, these stud bolts guarantee exceptional performance in critical applications around the globe.
These ASTM A193 B8 CL4 Stud Bolts are crafted from austenitic stainless steel, typically Type 304, which has undergone carbide-solution treatment and strain hardening. They boast a tensile strength of approximately 125 ksi (860 MPa) and a yield strength of 100 ksi (690 MPa), ensuring impressive mechanical durability. Thanks to their high toughness, non-magnetic properties, and resistance to oxidation, they perform reliably even in the harshest conditions. Their metallurgical stability means they can be trusted for long-lasting performance under stress and varying thermal environments.
| 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 |
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 |
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ASTM A193 B8 CL4 stud bolts are widely used in high-pressure and high-temperature environments, such as in the oil and gas, petrochemical, and power generation industries. They are essential for securing flanges, valves, and other critical components in reactors, turbines, and pipelines. Their superior strength and corrosion resistance make them suitable for demanding applications where reliability and durability are crucial. These stud bolts ensure the integrity and performance of machinery and infrastructure under extreme conditions.
You’ll find ASTM A193 B8 CL4 Stud Bolts widely utilized across various industries, including petrochemicals, oil and gas, marine, power generation, and chemical processing. They’re often used in flanges, pressure vessels, boilers, heat exchangers, and pipeline systems where strength and corrosion resistance are crucial. Their ability to endure aggressive chemicals, high pressure, and elevated temperatures makes them indispensable in refineries, offshore platforms, and critical processing facilities. Plus, they’re also employed in heavy machinery and structural assemblies, ensuring secure fastening, durability, and safety in demanding operations.
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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