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ASTM A193 B6 Nuts are high-strength alloy steel fasteners designed to provide secure and reliable connections in demanding industrial applications. Manufactured from chromium-molybdenum alloy steel, these nuts are heat-treated to achieve superior tensile and proof strength, making them suitable for high-temperature and high-pressure environments. Widely used in petrochemical plants, power generation facilities, refineries, and heavy engineering projects, B6 Nuts ensure durable and dependable fastening solutions. With precision manufacturing and strict quality control, Rinku Fasteners delivers ASTM A193 B6 Nuts that guarantee long-term performance, reliability, and safety for critical industrial operations.
ASTM A193 B6 Nuts are made from chromium-molybdenum alloy steel, providing high tensile and yield strength. Heat treatment enhances hardness, toughness, and resistance to wear, stretching, and thermal stress. These nuts maintain dimensional stability and structural integrity under high pressure and elevated temperatures. Their mechanical properties, including strength, creep resistance, and durability, make them ideal for demanding applications. B6 Nuts also resist oxidation and maintain performance in high-stress and high-temperature industrial environments, ensuring reliable operation in critical systems such as boilers, turbines, and pressure vessels.
| Element | B6 |
| Carbon | 0 – 0.08% |
| Manganese | 0 – 2.00% |
| Phosphorus, max | 0 – 0.045% |
| Sulfur, max | 0 – 0.030% |
| Silicon | 0 – 1.0% |
| Chromium | 19.0 – 9.0% |
| Nickel | 12.0 – 0% |
| Molybdenum | – |
| Tensile Strength/Ultimate Tensile Stress (UTS) – (Mpa) | 515 |
| Yield Strength/Proof Stress(0.2% Offset) (YS) – (Mpa) | 205 |
| Elongation in 4D (El) | 30 |
| Reduction | 50 |
| Hardness – (BHN) | 0 |
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 B6 Nuts are widely used in industries that require robust, high-strength fastening solutions capable of withstanding high pressure and temperature. They are commonly applied in boilers, turbines, heat exchangers, pressure vessels, and high-pressure piping systems in power generation, petrochemical, and refinery sectors. Their superior mechanical strength ensures secure flanged joints, valve assemblies, and structural connections under demanding service conditions. B6 Nuts are also employed in heavy machinery, industrial plants, and process equipment subjected to thermal cycling or mechanical stress. Their durability and reliability make them essential for long-term, critical industrial applications.
Our ASTM A193 B6 Nuts have comprehensive quality assurance, including commercial invoices, packaging lists, fumigation certificates, heat treatment charts, quality assurance plans, and approved lab test reports. We also provide various test certificates, such as MTC per EN 10204/3.1b, PMI Test Certificates, and 100% radiography test reports. Additionally, a Third-Party Inspection Certificate ensures 100% client satisfaction. Trust in our commitment to excellence with ASTM A193 B6 Nuts and detailed documentation.
Rinku Fasteners is a leading manufacturer and supplier of high-quality fasteners in Kolkata, India, with over 8 years of experience serving global industries.
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