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ASTM A193 B8T Stud Bolts are premium stainless steel fasteners designed for demanding industrial applications requiring high strength and corrosion resistance. Manufactured from austenitic stainless steel, typically Grade 304 or 316, these stud bolts are engineered to deliver reliable performance in high-pressure and high-temperature environments. They are widely used in petrochemical plants, refineries, power generation units, and marine applications. With precision manufacturing and stringent quality control, ASTM A193 B8T Stud Bolts ensure secure, long-lasting fastening in critical assemblies. Industries rely on them for durability, safety, and consistent mechanical performance in challenging conditions.
ASTM A193 B8T Stud Bolts are made from austenitic stainless steel, enriched with chromium and nickel for excellent corrosion resistance and oxidation stability. The T designation indicates that these fasteners are solution-treated and lightly cold-worked to achieve high tensile strength while retaining ductility. They offer superior mechanical properties, including high tensile and yield strength, hardness, and stress corrosion cracking resistance. ASTM A193 B8T Stud Bolts maintain stable performance under elevated temperatures, cyclic loads, and corrosive environments, making them ideal for industrial applications requiring both strength and reliability.
| 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 Stud Bolts
| IS BS ASTM | DIN, ISO, JIS, GB, IS, BS, ASTM | M 02 to M 160 | 3 mm to 200 mm |
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ASTM A193 B8T Stud Bolts are extensively used in industries that demand corrosion-resistant, high-strength fastening solutions. They are ideal for high-pressure piping, flanged joints, heat exchangers, boilers, pressure vessels, and valve assemblies in petrochemical, chemical processing, and power generation plants. Their enhanced mechanical properties and corrosion resistance make them suitable for marine and offshore applications, as well as food, pharmaceutical, and water treatment equipment. These stud bolts are trusted for maintaining secure and long-lasting connections in high-temperature, high-stress, and chemically aggressive environments. They provide reliable, safe, and durable fastening in critical industrial operations.
We guarantee complete customer satisfaction by providing thorough documentation with our ASTM A193 B8T Stud Bolts. Our comprehensive package includes a commercial invoice, packaging list, fumigation certificate, heat treatment chart, and a NABL-approved lab test report. Additionally, we offer MTC certificates as per EN 10204/3.1b, PMI Test Certificates, 100% radiography test reports, and Third Party Inspection Certificates, ensuring the highest product quality and integrity standards.
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