Home > ASTM A194 GR.8 Stud Bolts
Majid Fasteners, a leading manufacturer and supplier based in Dubai, UAE, specializes in high-quality industrial fasteners, including ASTM A194 GR.8 Stud Bolts. Renowned for precision engineering and durable performance, Majid Fasteners caters to diverse sectors such as oil and gas, construction, and manufacturing. Their ASTM A194 GR.8 Stud Bolts are designed to meet stringent international standards, ensuring exceptional strength, corrosion resistance, and reliability under high-pressure applications. With a commitment to excellence, timely delivery, and competitive pricing, Majid Fasteners has established itself as a trusted partner for businesses seeking premium fasteners in the UAE and beyond.
ASTM A194 Grade 8 stud bolts are high-strength fasteners primarily used in pressure vessels, flanges, and valve assemblies. Chemically, they are made of carbon steel with alloying elements like chromium and molybdenum to enhance strength and hardness. Mechanically, they exhibit high tensile strength (minimum 120 ksi or 827 MPa), yield strength around 92 ksi (634 MPa), and excellent toughness. They offer good resistance to wear, fatigue, and moderate corrosion. Typically, these bolts are heat-treated (quenched and tempered) to achieve these properties, ensuring reliability under high-pressure and high-temperature service conditions.
Material | Specification | Standards | Size | Length |
ASTM A194 GR.8 Stud Bolts
| IS BS ASTM | DIN, ISO, JIS, GB, IS, BS, ASTM | M 02 to M 160 | 3 mm to 200 mm |
| 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 |
ASTM A194 GR.8 stud bolts are widely used in high-pressure and high-temperature environments due to their exceptional strength and durability. They are commonly employed in the oil and gas, petrochemical, and chemical industries for securing flanges, valves, pressure vessels, and piping systems. These bolts are ideal for applications requiring high tensile strength and resistance to wear, fatigue, and moderate corrosion. They are also used in power plants, refineries, and marine equipment where safety and reliability are critical. Their heat-treated properties ensure stable performance under heavy loads and harsh operating conditions.
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