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Hamad Fasteners, based in Riyadh, Saudi Arabia, has earned a solid reputation as a reliable manufacturer and supplier of top-notch industrial fastening products designed for a variety of global industries. Known for their durability, precision, and compliance with international standards, the company offers fastening solutions that can handle even the toughest environments. One standout product is the ASTM A193 B8 CL3 Bolts, which are prized for their corrosion resistance, strength, and dependable performance in high-pressure and high-temperature situations. Crafted using advanced techniques and rigorous quality controls, these bolts are a go-to choice in critical industrial applications where safety and durability are non-negotiable.
These ASTM A193 B8 CL3 Bolts are made from carbide-solution treated and strain-hardened austenitic stainless steel, typically Type 304. They boast a tensile strength of around 125 ksi (860 MPa) and a yield strength of 100 ksi (690 MPa), providing greater strength compared to standard B8 grades. With their excellent toughness, outstanding oxidation resistance, and durability in harsh environments, these bolts ensure secure fastening in applications that demand both corrosion resistance and high performance under thermal stress.
| 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 CL3 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 CL3 bolts are essential in the petrochemical, power generation, and construction industries due to their high strength and corrosion resistance. They are commonly used in high-temperature and high-pressure applications, such as pressure vessels, flanges, and valves. Their reliability in extreme conditions makes them ideal for fastening components in chemical processing plants, oil refineries, and power plants. Additionally, their durability and performance ensure secure and long-lasting connections in critical infrastructure projects.
You’ll find ASTM A193 B8 CL3 Bolts widely utilized in the oil and gas, petrochemical, marine, and power generation sectors. They’re commonly used in boilers, flanges, pressure vessels, heat exchangers, and piping systems that operate under high temperatures and pressures. Their ability to resist corrosive chemicals and extreme service conditions makes them an ideal choice for refineries, offshore structures, and chemical plants. Plus, they’re also used in heavy machinery and structural projects, guaranteeing secure connections, safety, and a long service life even in challenging and fluctuating environments.
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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