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Murad Fasteners has built a solid reputation as a leading manufacturer and supplier in Doha, Qatar, specializing in high-quality ASTM A193 B8M bolts designed for tough industrial environments that face corrosive elements and high temperatures. With state-of-the-art manufacturing processes, rigorous quality checks, and a commitment to international standards, Murad Fasteners serves key sectors like oil and gas, petrochemicals, marine, and power generation. Our ASTM A193 B8M bolts are crafted to provide exceptional corrosion resistance, strength, and long-lasting reliability, even in the harshest conditions. Supported by modern facilities, skilled experts, and efficient logistics, we guarantee consistent quality and timely delivery of reliable fastening solutions throughout Qatar and the broader GCC region.
ASTM A193 B8M bolts are crafted from molybdenum-bearing austenitic stainless steel, akin to Type 316, which includes chromium, nickel, and molybdenum. This unique blend offers outstanding resistance to pitting, crevice corrosion, and chemical damage, especially in environments rich in chlorides. On the mechanical side, B8M bolts boast impressive tensile and yield strength, along with excellent ductility and high toughness. They perform reliably even at elevated temperatures and under constant stress, ensuring dimensional stability and resistance to stress corrosion cracking for extended service in challenging 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 B8M 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 B8M bolts find their place in various industries that demand high corrosion resistance and reliable mechanical performance. They are commonly used in flanged joints for pressure vessels, heat exchangers, pumps, valves, and piping systems. These bolts are extensively utilized in oil and gas refineries, petrochemical plants, chemical processing facilities, marine installations, and offshore structures. They provide secure, leak-free connections that can withstand thermal cycling, pressure changes, and corrosive environments. ASTM A193 B8M bolts are the go-to choice for critical assemblies where chemical resistance is paramount.
Murad fasteners contain careful packages of ASTM A193 B8M bolts to ensure safe delivery and optimal quality. Each bolt is individually inspected and carefully wrapped to prevent damage during transport. We use durable protective coatings and fasteners to keep the bolt intact. Custom packaging is available to meet specific needs. Our commitment to quality extends through our packaging, ensuring that your fasteners arrive in perfect condition, ready for immediate use.
Murad Fasteners is a leading manufacturer and supplier of high-quality fasteners in Doha, Qatar, with over 8 years of experience serving global industries.
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