stud bolt B16 , Iran

The B16 stud bolt, manufactured in accordance with ASTM A193 Grade B16, is made from alloy steel with high chromium and molybdenum content, suitable for high-pressure applications. This stud bolt has a minimum tensile strength of 125 ksi approximately 860 MPa and a minimum yield strength of 105 ksi about 725 MPa. Its chemical composition includes up to 0.50% carbon, 0.80–1.10% chromium, and 0.15–0.25% molybdenum. B16 stud bolts are heat-treated by quenching and tempering, with a surface hardness ranging from 235 to 321 Brinell. Thread dimensions conform to ASME B1.1 with a 2A class fit and are available in diameters from 1/4 inch to 4 inches.

The operating temperature range of B16 stud bolts is from minus 29 to plus 593 degrees Celsius, making them ideal for high-temperature industrial applications. They are commonly used in power plant equipment, boilers, heat exchangers, and high-pressure steam lines. Surface finishes often include black oxide or hot-dip galvanizing to improve corrosion resistance. To ensure quality, tensile, hardness, and chemical analysis tests are conducted according to ASTM A193 requirements. Due to their high mechanical strength and thermal stability, B16 stud bolts are a reliable choice for critical connections in the energy and petrochemical industries.
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