A193 B7 Stud Bolt
ASTM A193 B7 stud bolts are made from quenched and tempered alloy steel, primarily used in high-temperature and high-pressure applications. Their chemical composition includes 0.40% carbon, 0.80–1.05% chromium, and 0.15–0.30% molybdenum. This alloy enhances thermal strength and creep resistance under extreme operating conditions. The minimum yield strength is 105,000 psi and the ultimate tensile strength reaches 125,000 psi. The maximum allowable service temperature is approximately 450 degrees Celsius.
The length of A193 B7 stud bolts typically ranges from 10 millimeters to 3 meters and is available with both metric and inch threads. Thread classes such as UNC or UNF are provided for various industrial requirements. Surface hardening is achieved through quenching and tempering to ensure maximum mechanical strength. These stud bolts are manufactured in compliance with ASTM A193 and ASME B18.31.2 standards, making them ideal for flanged joints, heat exchangers, and pressure vessels.
