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Murad Fasteners, based in Doha, Qatar, has built a solid reputation as a reliable manufacturer and supplier of high-quality industrial fasteners, including ASTM A193 B8M Stud Bolts. Renowned for their exceptional quality and precision, Murad Fasteners caters to a variety of industries such as oil and gas, petrochemical, power generation, and construction. The company prioritizes adherence to international standards, ensuring that each stud bolt offers outstanding strength, corrosion resistance, and reliability. By leveraging advanced manufacturing techniques, rigorous quality control, and prompt delivery, Murad Fasteners delivers robust fastening solutions that bolster structural integrity, enhance operational safety, and ensure long-lasting performance in challenging industrial settings.
ASTM A193 B8M Stud Bolts are crafted from austenitic stainless steel Type 316, which is fortified with chromium (16–18%), nickel (10–14%), and molybdenum (2–3%) to provide excellent corrosion resistance, particularly in the presence of chlorides and acidic conditions. These bolts boast a high tensile strength of around 75 ksi (515 MPa) and good elongation, offering toughness and resistance to stress corrosion cracking. They are well-suited for high-temperature applications and maintain their shape under mechanical stress. The B8M grade provides superior chemical and pitting resistance compared to B8, making it perfect for demanding industrial environments.
| Element | B8 | 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 |
|
Material |
Specification |
Standards |
Size
|
Length |
|
ASTM A193 B8M 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 B8M stud bolts are widely used in high-temperature and high-pressure environments, such as in petrochemical, oil and gas, and power generation industries. They are essential for securing flanges, valves, and pumps in machinery and infrastructure where strength and corrosion resistance are critical. Their durability makes them suitable for applications in chemical processing and marine environments. By adhering to ASTM standards, B8M stud bolts ensure reliable performance and safety in demanding industrial settings.
ASTM A193 B8M Stud Bolts find extensive use in sectors that demand high corrosion resistance and strength, including oil and gas, chemical processing, petrochemicals, and marine applications. They are particularly effective for assembling flanges, valves, pressure vessels, heat exchangers, and piping systems that are exposed to harsh chemicals, seawater, and elevated temperatures. The addition of molybdenum in B8M ensures long-lasting durability against pitting and crevice corrosion, making these stud bolts a dependable choice for critical installations.
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