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Mira Fasteners is a reliable manufacturer and supplier of ASTM A193 B8 Class 2 Stud Bolts, proudly based in Kuala Lumpur, Malaysia. These fasteners are specifically designed for high-strength applications where both corrosion resistance and mechanical performance are essential. Crafted from strain-hardened AISI 304 stainless steel, B8 Class 2 stud bolts are perfect for industries like petrochemical, power generation, oil & gas, and marine engineering. Mira Fasteners is committed to delivering precision-engineered products that adhere to international standards, earning the trust of clients throughout Malaysia and Southeast Asia.
ASTM A193 B8 Class 2 Stud Bolts boast superior mechanical properties compared to Class 1, thanks to a carefully controlled strain-hardening process. These bolts typically achieve a minimum tensile strength of 690 MPa and a yield strength of 515 MPa, making them well-suited for high-pressure and high-temperature settings. They excel in resisting corrosion in both atmospheric and mildly corrosive environments, making them a go-to choice for flanged joints, piping systems, pressure vessels, and structural connections. Their fully threaded design ensures a strong and secure fit when paired with compatible nuts on either end.
| 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 |
|
Material |
Specification |
Standards |
Size
|
Length |
|
ASTM A193 B8 CL2 StudBolt
|
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 ASTM A193 B8 Class 2 Stud Bolts are perfect for applications that require both strength and resistance to chemicals or moisture. You’ll find them in refineries, offshore platforms, chemical plants, and wastewater treatment facilities. Their long-lasting durability and low maintenance needs enhance operational efficiency and system integrity. Built to perform reliably in tough conditions, B8 Class 2 stud bolts are the preferred option for engineers looking for robust, corrosion-resistant fasteners in critical applications.
We ensure that the ASTM A193 B8 CL2 Stud Bolts are installed with the utmost care. Each bolt is thoroughly inspected and sealed with durable, waterproof material to prevent damage during transport. Our packaging includes clear labeling to make it easy to find and follow. Whether you need a bulk shipment or a customized packaging solution, we guarantee that your bolts will arrive in perfect condition, ready for immediate use in your application of the importance of the.
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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