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Hamad Fasteners, based in Riyadh, Saudi Arabia, has built a solid reputation as a reliable manufacturer and supplier of top-notch fastening solutions that adhere to international standards and meet a variety of industrial needs. Renowned for their precision, durability, and dependability, the company caters to sectors like petrochemical, oil and gas, marine, and construction. One of their standout products, the ASTM A193 B8C Bolts, is particularly prized for its exceptional corrosion resistance and outstanding performance in high-temperature and high-pressure settings. These bolts are crafted using cutting-edge technology to ensure they provide long-lasting fastening solutions for even the most demanding applications.
The ASTM A193 B8C Bolts are made from austenitic stainless steel, specifically Type 347, which is enhanced with columbium (niobium) to improve resistance to intergranular corrosion. This unique composition guarantees durability in high-temperature conditions, while the chromium and nickel content offers robust protection against oxidation and scaling. With a tensile strength of up to 125 ksi (860 MPa) and a yield strength of around 100 ksi (690 MPa), these bolts provide both mechanical strength and toughness, making them ideal for critical and challenging service environments.
| 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 B8C 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 B8C bolts are used in a variety of high-temperature and high-pressure applications, including power generation, petrochemical, and oil and gas industries. They are ideal for securing critical components in equipment such as reactors, turbines, and piping systems. Their superior corrosion resistance and strength make them suitable for environments that involve extreme heat and harsh chemicals. These bolts ensure reliable performance and structural integrity in demanding industrial settings.
These ASTM A193 B8C Bolts find extensive use in industries such as power generation, chemical processing, oil refineries, and marine engineering. They are perfect for applications in boilers, heat exchangers, pressure vessels, turbines, and flanges, where long-term stability against corrosion and high thermal stress is crucial. Moreover, these bolts are commonly used in offshore platforms, pipelines, and construction projects that face harsh conditions. Their ability to blend corrosion resistance with mechanical reliability makes them a go-to choice for industries that demand secure and durable fastening solutions.
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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