B16 Stud Bolt | Various types of B16 Stud Bolt-Nanotejarat

Stud Bolt ASTM A 193 B16

ASTM A193 B16 stud bolts are made from alloy steel containing chromium, molybdenum, and vanadium, engineered to withstand high pressure and temperature conditions. This grade offers a tensile strength range of 860 to 1030 MPa and a yield strength between 690 and 860 MPa. Quench and temper heat treatment enhances both hardness and thermal resistance. The recommended operating temperature for B16 stud bolts reaches up to approximately 510°C. These bolts are manufactured in diameters from 1/4 inch to 2.5 inches, with either inch or metric threads. Thread types comply with UN or M standards and are typically used with ASTM A194 Grade 4 or 7B nuts.

The surface of B16 stud bolts is typically offered in black oxide, galvanized, or phosphate coatings to provide corrosion protection. The average density of the alloy is approximately 7.85 g/cm³, and its hardness ranges from 200 to 300 Brinell. Thread dimensional tolerances follow Class 2A standards to ensure maximum grip and structural safety. These stud bolts are used in assembling boilers, heat exchangers, high-pressure flanges, and turbines. The ASTM A193 B16 standard outlines precise chemical, mechanical, and performance requirements for high-pressure applications in petrochemical and power generation industries.

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stud bolt B16

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 ind


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