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Mira Fasteners, a well-respected manufacturer and supplier located in Kuala Lumpur, Malaysia, specializes in top-notch ASTM A193 B8M Fasteners designed for exceptional performance in harsh, corrosive, and high-temperature settings. Crafted from austenitic stainless steel, these fasteners find their place in various industries, including marine, chemical, petrochemical, and power generation. They are celebrated for their outstanding resistance to pitting, crevice corrosion, and chloride stress corrosion cracking, ensuring long-lasting durability and reliability. Mira Fasteners is committed to precise manufacturing, strict adherence to ASTM specifications, and rigorous quality control, making their products the go-to choice for critical applications where safety, strength, and corrosion resistance are essential.
The ASTM A193 B8M Fasteners are made from AISI 316 stainless steel, which provides remarkable mechanical strength and superior corrosion resistance compared to B8 grade fasteners. Their chemical makeup, enhanced with molybdenum, boosts their resistance to chlorides and harsh chemicals. These fasteners exhibit high tensile and yield strength, good ductility, and excellent oxidation resistance even at elevated temperatures. They maintain their mechanical integrity under both static and dynamic loads, making them perfect for aggressive environments, including marine and offshore applications.
| Element | B7 | B8M | B8MM |
| 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 |
| B8M | 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 | |
| B8M Class 1 | All | 75 | 30 | 30 | 50 |
| B8MM Class 1 | All | 75 | 30 | 30 | 50 |
| B8M 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 | |
| B8MM 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 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.
ASTM A193 B8M fasteners are widely used in demanding applications due to their high strength and corrosion resistance. Typical applications include aerospace, fuel cells, and power plants where high temperature and high pressure conditions prevail. It is also used in construction and marine environments due to its durability and reliability. These fasteners ensure safe and stable connections with critical systems, making them essential for maintaining safety and performance during complex operating systems.
You’ll find ASTM A193 B8M Fasteners widely used in industries that demand strong corrosion resistance, such as offshore oil rigs, desalination plants, chemical processing facilities, and marine structures. They are particularly effective for securing flanges, valves, pressure vessels, pumps, and piping systems that are exposed to seawater and harsh chemicals. Power plants rely on them for high-temperature assemblies, while the food and pharmaceutical sectors appreciate their hygienic, non-contaminating properties. Their ability to perform reliably under extreme conditions makes them a vital choice for critical infrastructure and industrial operations around the globe.
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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