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Mazin Fasteners, based in Muscat, Oman, has built a solid reputation as a reliable manufacturer and supplier of top-notch industrial fasteners, including bolts, nuts, and screws. One of their standout products, the ASTM A193 B8 CL5 Bolts, is celebrated for its exceptional strength, resistance to corrosion, and dependability in tough industrial settings. Crafted to comply with international ASTM standards, these bolts boast precise dimensions, consistent performance, and impressive durability. Catering to sectors like oil and gas, petrochemical, power generation, and construction, Mazin Fasteners provides high-performance fastening solutions that prioritize operational safety, structural integrity, and efficiency, playing a vital role in critical projects throughout Oman and beyond.
These ASTM A193 B8 CL5 Bolts are made from austenitic stainless steel, typically Grade 304, which offers enhanced corrosion resistance thanks to controlled levels of chromium and nickel. On the mechanical side, these bolts showcase high tensile strength, excellent ductility, and toughness, along with a strong resistance to oxidation and chemical exposure. Designed to endure high pressure and temperature conditions, ASTM A193 B8 CL5 Bolts guarantee reliable performance in crucial applications, maintaining structural integrity while delivering durability and long-term reliability even in demanding industrial environments.
| Element | B8 CL5 | B8 CL5 | B8M CL5 |
| 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 CL5 | 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 CL5 Class 1 | All | 75 | 30 | 30 | 50 |
| B8M CL5 Class 1 | All | 75 | 30 | 30 | 50 |
| B8 CL5 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 CL5 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 CL5 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.
You’ll find ASTM A193 B8 CL5 Bolts commonly used in pressure vessels, boilers, chemical plants, petrochemical facilities, and high-temperature pipelines. Their outstanding corrosion resistance and strength make them ideal for securing flanges, valves, and mechanical equipment in harsh conditions. These bolts offer safe and robust fastening solutions where reliability and durability are paramount. Mazin Fasteners proudly supplies precision-engineered ASTM A193 B8 CL5 Bolts throughout Oman, supporting industries that need trustworthy, high-performance fasteners for their demanding operational and structural needs.
At Mazin Fasteners, we ensure that ASTM A193 B8 CL5 bolts are expertly packaged to preserve their quality and prevent damage during transit. Each bolt is carefully inspected and coated with anti-corrosion treatments before being packed in robust, labeled boxes or crates. Our packaging is designed to meet specific client requirements and safeguard the bolts from environmental factors. With attention to detail and precision, we guarantee that your bolts arrive in perfect condition, ready for immediate use.
Mazin Fasteners is a leading manufacturer and supplier of high-quality fasteners in Muscat, OMAN, with over 8 years of experience serving global industries.
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