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MUKAU FASTENERS, a top-notch manufacturer and supplier located in Kinshasa, Congo, is all about delivering high-quality ASTM A193 B8T Bolts. These bolts are renowned for their incredible strength, resistance to corrosion, and overall reliability. Crafted from stabilized austenitic stainless steel and heat-treated for enhanced durability, they’re built to thrive in high-temperature and high-pressure settings. Whether it’s in the chemical, marine, oil & gas, or power generation industries, MUKAU FASTENERS guarantees precision manufacturing and adherence to global quality standards, providing long-lasting fastening solutions for critical applications.
ASTM A193 B8T Bolts are constructed from Type 321 stainless steel, which is stabilized with titanium to prevent intergranular corrosion and maintain strength even at high temperatures. This alloy typically includes chromium (17–19%), nickel (9–12%), and at least 0.35% titanium. With a minimum tensile strength of 515 MPa and a yield strength of 205 MPa, these bolts also offer good elongation and hardness. They excel in oxidation resistance, high creep strength, and perform exceptionally well in both acidic and high-temperature environments, making them perfect for applications that involve continuous heat exposure and corrosive substances.
| 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 B8T Bolts
| 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.
You’ll find ASTM A193 B8T Bolts in a variety of settings, including chemical processing plants, oil refineries, marine environments, and high-temperature systems where corrosion and oxidation resistance are essential. They’re particularly suited for heat exchangers, pressure vessels, boiler systems, and exhaust components, thanks to their titanium stabilization and resistance to carbide precipitation. Additionally, these bolts are used in petrochemical facilities, food processing machinery, and aerospace equipment that demand durability under thermal stress. MUKAU FASTENERS provides ASTM A193 B8T Bolts designed for consistent performance in these challenging applications.
We uphold stringent quality standards for our ASTM A193 B8T Bolts, subjecting them to rigorous tests such as Hardness Test, Chemical Analysis via Spectro Analysis, PMI Testing, Flattening Test, Micro and Macro Tests, Pitting Resistance Test, Flaring Test, Intergranular Corrosion (IGC) Test. Each order includes a commercial invoice, packaging list, Certificate of Origin, and Guarantee Letter. For added assurance, we offer third-party inspection certificates to validate the excellence and suitability of our bolts for various applications, ensuring client satisfaction.
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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