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Hamad Fasteners, located in Riyadh, Saudi Arabia, has made a name for itself as a top-notch manufacturer and supplier of high-quality fastening solutions that are trusted throughout the Middle East and beyond. With a keen emphasis on precision, durability, and adherence to international standards, the company offers products that are built to excel in even the toughest environments. Among their impressive lineup, the ASTM A193 B8 CL3 Fasteners are particularly notable for their exceptional corrosion resistance, mechanical strength, and ability to handle high temperatures. Crafted using advanced techniques and rigorous quality control, these fasteners are a go-to choice for critical industrial applications.
The ASTM A193 B8 CL3 Fasteners are made from austenitic stainless steel, usually Type 304, and undergo carbide-solution treatment to guard against intergranular corrosion. They boast a tensile strength of around 100 ksi (690 MPa) and a yield strength of 65 ksi (450 MPa), ensuring remarkable toughness and long-lasting performance. Their non-magnetic nature, along with resistance to oxidation and scaling, allows them to operate reliably under high-stress and high-temperature conditions. These fasteners provide both durability and stability, even in harsh environments.
| Element | B7 | B8 CL3 | B8 CL3M |
| 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 CL3 Class 1 | All | 75 | 30 | 30 | 50 |
| B8 CL3M 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 | |
| B8 CL2M Class 3 | Up to 3/4 | 110 | 95 | 15 | 45 |
Material | Specification | Standards | Size | Length |
ASTM A193 B8 CL3 Fasteners | 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 CL3 fasteners are widely used in high-temperature and high-pressure environments, making them ideal for the petrochemical, aerospace, and power generation industries. They are commonly found in gas turbines, exhaust systems, and high-stress equipment where reliability and strength are crucial. Their excellent corrosion resistance also makes them suitable for harsh chemical environments and offshore applications. These fasteners ensure secure, long-lasting connections in critical and demanding applications.
You’ll find ASTM A193 B8 CL3 Fasteners widely utilized in sectors like oil and gas, petrochemical, marine, power generation, and chemical processing. They’re commonly used in pressure vessels, flanges, valves, boilers, and heat exchangers, where strength and corrosion resistance are paramount. Their capacity to withstand elevated temperatures, chemical exposure, and oxidizing conditions makes them a preferred option for refinery operations, offshore platforms, and pipeline systems. Plus, these fasteners are crucial in structural assemblies and heavy machinery, where consistent performance and reliability are essential.
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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