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MUKAU FASTENERS is a well-respected manufacturer and supplier based in Kinshasa, Congo, specializing in high-quality ASTM A193 B8 Bolts that are built to perform exceptionally in tough industrial settings. These bolts are made from austenitic stainless steel, renowned for their outstanding resistance to corrosion, impressive tensile strength, and long-lasting durability. With a commitment to precision engineering and strict compliance with ASTM standards, MUKAU FASTENERS guarantees that their ASTM A193 B8 Bolts deliver dependable fastening solutions, perfect for high-pressure and high-temperature applications across industries like oil, gas, power generation, and petrochemicals.
ASTM A193 B8 Bolts are crafted from AISI 304 stainless steel, which includes around 18% chromium and 8% nickel, along with trace amounts of carbon, manganese, and silicon. This unique blend provides remarkable resistance to corrosion and oxidation, even when temperatures rise. These bolts boast a tensile strength of approximately 515 MPa and a yield strength of about 205 MPa. They also feature high ductility, excellent toughness, and superior creep strength. Through heat treatment processes, their strength and microstructural stability are enhanced, making them perfect for use in harsh, corrosive, and high-temperature environments.
|
Material |
Specification |
Standards |
Size
|
Length |
|
ASTM A193 B8 Bolt
|
IS
BS
ASTM
|
DIN, ISO, JIS, GB, IS, BS, ASTM |
M 02 to M 160
|
3 mm to 200 mm
|
| 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 |
| 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% |
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.
You’ll find ASTM A193 B8 Bolts widely used in industries that require both strength and resistance to corrosion, such as chemical processing, oil refining, marine engineering, and power plants. They’re commonly found in heat exchangers, pressure vessels, boilers, flanges, and pipelines. These bolts are also ideal for construction and machinery that frequently encounter moisture, chemicals, and high temperatures. With their reliable fastening performance, ASTM A193 B8 Bolts help ensure structural integrity and durability in critical operations, even under extreme pressure, thermal, and corrosive conditions.
At Mukau Fasteners, ASTM A193 B8 bolts are carefully packaged to ensure they reach you in pristine condition. Each bolt is individually inspected and wrapped to prevent damage during transit. Our packaging includes protective coatings and sturdy containers to safeguard against corrosion and mechanical stress. Additionally, we provide detailed labeling for easy identification and inventory management. Our commitment to careful packaging ensures that your high-quality fasteners arrive ready for use, maintaining their integrity and performance.
Mukau Fasteners is a leading manufacturer and supplier of high-quality fasteners in Kinshasa, Congo, with over 8 years of experience serving global industries.
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