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The Fasteners Mart, Mumbai, India, is a reliable fastener manufacturer and supplier of excellent quality fasteners, such as ASTM A193 B8T bolts. Renowned for excellence, the company provides comprehensive fastener solutions designed to suit various industrial requirements. With a commitment to reliability and accuracy, The Fasteners Mart strives to maintain the highest level of manufacturing standards, thus becoming a client favorite when it comes to efficient and high-performance products.
ASTM A193 B8T bolts are constructed of stainless steel alloy which is mainly composed of 18-20% chromium and 8-10% nickel and also contains tantalum to provide corrosion resistance and high-temperature strength. It also contains minor amounts of carbon, manganese, silicon and phosphorus. These bolts provide very good mechanical properties such as high tensile strength, normally 75-85 ksi, and good yield strength. They also exhibit superior oxidation and stress corrosion cracking resistance, making them suitable for extreme conditions.
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 |
| 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 bolts are extensively employed in industries where they need high-strength, corrosion-resistant fasteners for critical applications. These are generally employed in the chemical, petrochemical, and power generation industries and are suitable for high-temperature service and corrosive environments. They are utilized in equipment such as reactors, heat exchangers, valves, and pressure vessels. Their higher strength, toughness, and resistance to oxidation, stress corrosion cracking, and general deterioration make them indispensible in providing the required safe and dependable operation of industrial systems under high-stress environments.
We follow strict quality standards for our ASTM A193 B8T Bolts and test them extensively with Hardness Testing, Chemical Analysis by Spectro Analysis, PMI Testing, Flattening Tests, Micro and Macro Examinations, Pitting Resistance Testing, Flaring Tests, and Intergranular Corrosion (IGC) Tests. Every order includes a commercial invoice, packing list, Certificate of Origin, and Guarantee Letter. Furthermore, we issue third-party inspection certificates to guarantee the high quality and appropriateness of our bolts for various applications, ensuring customer satisfaction.
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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