Request For Our Latest Prices On ASTM A194 GR.8 Bolts in Kolkata, India!
Rinku Fasteners, a leading manufacturer and supplier in Kolkata, India, offers high-quality ASTM A194 GR.8 Boltsdesigned for heavy-duty industrial applications. These bolts are manufactured from high-strength alloy steel, precisely heat-treated to provide superior mechanical performance, including high tensile and proof strength. Ideal for high-pressure and high-temperature environments, they are extensively used in refineries, petrochemical plants, power generation facilities, and structural assemblies. With strict quality control and precision engineering, ASTM A194 GR.8 Bolts ensure reliable, long-term fastening, providing safety, stability, and performance for critical industrial applications where failure is not an option.
ASTM A194 GR.8 Bolts are made from alloy steel, typically chromium-molybdenum or carbon steel, heat-treated to achieve high tensile strength, hardness, and toughness. These bolts exhibit superior mechanical properties, including excellent yield strength, proof load, and resistance to wear, deformation, and thermal stress. Their alloy composition ensures durability under high-pressure and high-temperature service conditions. GR.8 bolts maintain dimensional stability and mechanical integrity even under cyclic loading, making them suitable for heavy-duty industrial applications where reliability, strength, and longevity are crucial.
| Element | ASTM A194 GR.8 |
| Carbon | 0.08 max |
| Manganese | 2.00 Max |
| Phosphorus, max | 0.05% |
| Sulfur, max | 0.03% |
| Silicon | 1.00% max |
| Chromium | 18.0-20.0% |
| Nickel | 8.0-11.0% |
| Molybdenum | 0.20-0.35% |
| Tensile Strength/Ultimate Tensile Stress (UTS) – (Mpa) | 550 |
| Yield Strength/Proof Stress(0.2% Offset) (YS) – (Mpa) | 240 |
| Elongation in 4D (El) | 30 |
| Reduction | 40 |
| Hardness – (BHN) | 223 |
Material | Specification | Standards | Size | Length |
ASTM A194 GR.8 Bolts | IS BS ASTM | DIN, ISO, JIS, GB, IS, BS, ASTM | M 02 to M 160 | 3 mm to 200 mm |
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 A194 GR.8 Bolts are widely used in industries requiring high-strength, durable, and reliable fastening solutions. They are ideal for high-pressure flanged joints, boilers, pressure vessels, heat exchangers, and piping systems in petrochemical, chemical processing, and power generation plants. These bolts are also used in heavy machinery, structural frameworks, and industrial equipment subjected to mechanical stress and thermal fluctuations. Their combination of strength and corrosion resistance ensures secure and long-lasting connections in demanding applications. GR.8 Bolts provide dependable performance in high-pressure, high-temperature, and high-stress environments, ensuring safety and reliability in critical industrial systems.
We offer a range of packaging methods, including wooden boxes and crates, to ensure the safe delivery of our ASTM A194 GR.8 Bolts. We provide comprehensive test reports, including raw material, chemical, and alloy tests, to guarantee the highest quality. Additionally, we offer various certifications, such as ISO certificates, 100% radiography, and mill test certificates, to demonstrate our commitment to excellence and the use of top-grade raw materials in our products.
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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