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Mira Fasteners is a reliable manufacturer and supplier of ASTM A193 B8C Bolts, proudly based in Kuala Lumpur, Malaysia. These stainless steel bolts are specifically crafted for high-temperature and corrosion-heavy environments, making them perfect for industries like chemical processing, power generation, oil & gas, and marine applications. Adhering to strict international standards, Mira Fasteners ensures consistent quality and dependable performance for clients throughout Malaysia and Southeast Asia.
The ASTM A193 B8C Bolts are constructed from AISI 347 stainless steel, a columbium-stabilized austenitic alloy renowned for its outstanding resistance to intergranular corrosion, particularly after welding or extended exposure to high temperatures. These bolts boast a minimum tensile strength of 515 MPa and maintain their mechanical integrity even in elevated temperature settings. The inclusion of columbium (niobium) helps prevent carbide precipitation, guaranteeing reliable performance in situations involving thermal cycling or stress corrosion cracking.
| 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 B8C 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.
These bolts are frequently utilized in pressure vessels, heat exchangers, reactors, piping systems, and other assemblies where corrosion resistance and thermal stability are crucial. Often paired with ASTM A194 Grade 8C nuts, B8C bolts create a secure and durable fastening solution for critical systems. Mira Fasteners provides ASTM A193 B8C Bolts in a range of sizes, thread types, and finishes to cater to the specific requirements of complex industrial projects. Their long-lasting durability and stability make them a top choice for high-performance bolted connections.
At Mira Fasteners, we prioritize the secure and efficient packaging of ASTM A193 B8C bolts to ensure their safe delivery and optimal condition upon arrival. Each bolt is carefully packed in high-quality, durable containers that protect against damage and contamination. Our packaging includes clear labeling for easy identification and handling. We offer customized packaging solutions to meet specific client needs, ensuring that every order arrives intact and ready for use in demanding industrial applications.
Mira Fasteners is a leading manufacturer and supplier of high-quality fasteners in Kuala lumpur, Malaysia, with over 8 years of experience serving global industries.
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