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Brian Fasteners, located in Houston, USA, is a trusted name in the manufacturing and supply of ASTM A193 B8 fasteners, designed to perform reliably in high-temperature and high-pressure situations. Crafted from austenitic stainless steel (usually Type 304), these fasteners boast impressive corrosion resistance, mechanical strength, and durability. Brian Fasteners offers a wide variety of B8 fasteners, including bolts, nuts, studs, and washers, all produced in line with ASTM A193 standards. Commonly found in petrochemical, power generation, and pressure vessel applications, their ASTM A193 B8 fasteners undergo strict quality checks to ensure consistent, top-notch performance in challenging industrial environments.
ASTM A193 B8 fasteners are constructed from 304 stainless steel, which contains about 18% chromium and 8% nickel, along with low carbon content to enhance weldability and corrosion resistance. These fasteners deliver outstanding tensile strength, good elongation, and resistance to oxidation and stress corrosion cracking. They excel in high-temperature and mildly corrosive settings. Brian Fasteners adheres to ASTM A193 and A962 specifications, offering optional strain-hardened B8 Class 2 variants for extra strength. Each fastener is thoroughly tested for mechanical properties, hardness, and chemical composition to ensure reliability under pressure and heat.
| 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 Fasteners
|
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.
Brian Fasteners’ ASTM A193 B8 fasteners find extensive use in the oil and gas, petrochemical, refinery, power generation, and pressure vessel manufacturing sectors. These fasteners are perfect for flange connections, valves, piping systems, and heat exchangers, particularly in scenarios where high strength and moderate corrosion resistance are crucial. Thanks to their stainless steel construction, they perform well in environments that experience moisture, mild acids, and elevated temperatures. Their durability makes them a go-to choice for demanding applications, ensuring that they stand the test of time even in tough conditions.
We ensure that our ASTM A193 B8 fasteners are installed with the utmost care to maintain quality and integrity. Each binder is thoroughly inspected and packed to prevent damage during transport. We use durable, weather-resistant materials for packaging, ensuring safe delivery. Our packaging is designed for easy handling and storage while adhering to industry standards. Count on Brian Fasteners for a reliable and quality fastening solution for all your fastening needs.
Brian Fasteners is a leading manufacturer and supplier of high-quality fasteners in Houston , USA, with over 8 years of experience serving global industries.
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