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Hamad Fasteners, based in Riyadh, Saudi Arabia, has built a solid reputation as a top-notch manufacturer and supplier of high-quality fastening solutions that adhere to international standards. With a keen emphasis on durability, precision, and performance, the company serves a variety of industries, including oil and gas, petrochemical, marine, and construction. One of their standout products, the ASTM A193 B8 CL2 Bolts, is particularly recognized for its exceptional corrosion resistance, impressive strength, and outstanding performance even under high temperature and pressure conditions. These bolts are crafted to provide long-lasting fastening solutions for critical and demanding applications.
The ASTM A193 B8 CL2 Bolts are made from austenitic stainless steel, mainly Type 304, and are strain-hardened to Class 2 standards to enhance their mechanical properties. Thanks to their chromium and nickel content, they boast remarkable resistance to oxidation and corrosion, even in the toughest environments. With a tensile strength typically around 100 ksi (690 MPa) and a yield strength of about 65 ksi (450 MPa), these bolts strike a reliable balance between toughness, durability, and thermal stability, making them ideal for both standard and high-stress industrial applications.
| 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 | |
| B8M 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 CL2 Hex Bolt
|
IS
BS
ASTM
|
DIN, ISO, JIS, GB, IS, BS, ASTM |
M 02 to M 160
|
3 mm to 200 mm
|
To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.
ASTM A193 B8 CL2 bolts are widely used in high-temperature and corrosive environments, such as in the oil and gas, petrochemical, and power generation industries. Their high strength and resistance to oxidation make them suitable for securing critical components in machinery, pressure vessels, and piping systems. Common applications include flanged connections, reactor vessels, and steam pipelines. These bolts ensure reliable performance and durability under extreme conditions, making them essential for safety and efficiency in demanding industrial settings.
These bolts are widely utilized across various sectors, including chemical processing, power generation, refineries, and marine engineering. They are especially well-suited for applications in boilers, turbines, pressure vessels, heat exchangers, and flanged connections, where heat and corrosion resistance are crucial. Additionally, they are commonly found in offshore platforms, pipelines, and structural projects that face aggressive conditions. Their ability to maintain strength and stability in demanding environments makes them a vital fastening solution for essential industrial 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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