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The Fasteners Mart, a Mumbai-based manufacturer and supplier, is an expert in providing top-quality fastening solutions, such as ASTM A193 B8T Stud Bolts. With a reputation for precision engineering and high durability, our B8T stud bolts are best suited for high-temperature and corrosive conditions. With a deep focus on quality and customer satisfaction, The Fasteners Mart provides dependable products meeting international standards for various industrial uses.
ASTM A193 B8T Stud Bolts are produced using Type 321 stainless steel, which has titanium stabilization for increased corrosion resistance and high-temperature strength. The most common chemical composition is Chromium (17–19%), Nickel (9–12%), and Titanium (at least 5 times the carbon content). Mechanically, they provide a minimum tensile strength of 75 ksi, yield strength of 30 ksi, and very good elongation and hardness. Their strong characteristics enable them to be used in pressure vessels, heat exchangers, and other harsh conditions.
Material | Specification | Standards | Size | Length |
ASTM A193 B8T Stud Bolts | IS BS ASTM | DIN, ISO, JIS, GB, IS, BS, ASTM | M 02 to M 160 | 3 mm to 200 mm |
| 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 |
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 B8T stud bolts have a wide application in high-pressure and high-temperature usage. They offer great corrosion resistance and strength. They are produced from austenitic stainless steel and, as such, they find extensive application in chemical processing, marine, and power generation industries. Typically, the bolts are applied to fasten ovals, valves, and pressure vessels in tough environments. Their oxidation resistance and durability also make them ideal for usage in oil and gas, petrochemical, and pharmaceutical sectors.
We provide absolute customer satisfaction through the supply of ASTM A193 B8T Stud Bolts with accurate and trustworthy documentation. Every shipment comprises a commercial invoice, packing list, fumigation certificate, heat treatment chart, and NABL-approved laboratory test report. We also offer Material Test Certificates (MTC) as per EN 10204/3.1b, Positive Material Identification (PMI) test reports, 100% radiography inspection reports, and Third-Party Inspection Certificates, ensuring the highest quality of the product, traceability, and integrity.
The Fasteners Mart is a leading manufacturer and supplier of high-quality fasteners in Mumbai, India, with over 8 years of experience serving global industries.
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