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Amin Fasteners, located in Safat, Kuwait, has built a solid reputation as a reliable manufacturer and supplier of top-notch industrial fasteners. One of their standout products is the ASTM A193 B7 Stud Bolt, designed to meet rigorous performance standards for environments that experience high temperatures and pressures. Known for their precision manufacturing and durability, these stud bolts guarantee dependable joint integrity in critical applications. Amin Fasteners prioritizes quality assurance, prompt delivery, and customer satisfaction, making them a go-to choice for engineers, contractors, and industries that need robust fastening solutions. Their dedication to excellence ensures that every ASTM A193 B7 Stud Bolt adheres to global standards and consistently performs well under demanding conditions.
These stud bolts are primarily made from alloy steel, with a carefully balanced mix of carbon, chromium, and molybdenum to boost their strength and toughness. They undergo a quenching and tempering process to achieve impressive tensile strength, typically starting at a minimum of 125 ksi, along with excellent hardness and fatigue resistance. With outstanding mechanical properties, they can endure high temperatures and resist corrosion in moderately aggressive environments. The thoughtful combination of alloying elements and heat treatment guarantees that the bolts maintain their structural integrity even under extreme pressure and thermal cycling, making them perfect for critical industrial applications.
Material | Specification | Standards | Size | Length |
ASTM A193 B7 Stud 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.
ASTM A193 B7 stud bolts are extensively used in industries requiring high strength and durability. They are crucial in petrochemical, oil, and gas sectors for securing pipelines, valves, and flanges in high-pressure and high-temperature environments. Power generation plants utilize these bolts for boilers and turbine assembly. They are also employed in construction for structural reinforcement and in chemical processing plants where corrosion resistance is essential. Their reliability and compliance with stringent standards make them indispensable for critical applications.
ASTM A193 B7 Stud Bolts find their place in various high-pressure and high-temperature industrial settings, such as the oil and gas industry, power generation, petrochemical plants, and chemical processing sectors. They are particularly well-suited for fastening flanges, pressure vessels, pipelines, and heavy machinery where joint reliability is essential. Additionally, these stud bolts are utilized in boiler assemblies, refineries, and construction projects that demand strong, heat-resistant fasteners. Their exceptional mechanical strength, toughness, and ability to withstand harsh conditions make them indispensable in these applications.
Amin Fasteners is a leading manufacturer and supplier of high-quality fasteners in Safat, Kuwait, with over 8 years of experience serving global industries.
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