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Mazin Fasteners, located in Muscat, Oman, has earned a solid reputation as a reliable manufacturer and supplier of top-notch industrial fasteners, including ASTM A193 B8 stud bolts. These stud bolts are crafted to meet international standards, ensuring they deliver precision, strength, and dependable performance. Built to withstand tough service conditions, ASTM A193 B8 stud bolts find their place in various industries like oil and gas, petrochemical, power generation, and heavy engineering. Thanks to advanced manufacturing techniques and rigorous quality control, Mazin Fasteners provides fastening solutions that prioritize safety, durability, and long-lasting operational reliability.
Made from austenitic stainless steel enriched with chromium and nickel, ASTM A193 B8 stud bolts boast impressive resistance to corrosion and oxidation. They offer excellent tensile strength, toughness, and fatigue resistance, making them perfect for high-temperature and moderately high-pressure applications. These bolts maintain their structural integrity even under thermal stress and continuous load, ensuring they perform consistently in demanding industrial settings.
| 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 StudBolt
|
IS
BS
ASTM
|
DIN, ISO, JIS, GB, IS, BS, ASTM |
M 02 to M 160
|
3 mm to 200
|
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 Stud Bolts are widely used in industries requiring high-strength and corrosion-resistant fastening solutions. Key applications include petrochemical plants, oil and gas refineries, and power generation facilities. These bolts are essential for securing pressure vessels, flanges, valves, and pipeline assemblies in high-temperature and high-pressure environments. Their superior durability and reliability make them ideal for critical operations, ensuring safety and stability in demanding conditions. Choose ASTM A193 B8 Stud Bolts for dependable performance in challenging industrial applications.
You’ll often find ASTM A193 B8 stud bolts in flanged connections, pipelines, pressure vessels, valves, and heat exchangers. They’re particularly well-suited for chemical processing plants, refineries, power stations, and marine environments where heat and corrosion resistance are crucial. With their dependable mechanical properties and extended service life, they are the go-to choice for secure bolted joints in critical industrial assemblies.
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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