Stud Bolt ASTM A 193 B16 , Iran

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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