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Steel stud bolt

Stainless steel stud bolts are made from austenitic or martensitic stainless steel and are designed for corrosive environments and varying temperature conditions. Their typical chemical composition includes 16 to 18 percent chromium, 8 to 14 percent nickel, and varying amounts of carbon and molybdenum. The tensile strength of these stud bolts usually ranges from 70 to 125 ksi approximately 480 to 860 MPa. Heat treatment involves annealing to maintain flexibility and, in some cases, tempering to increase hardness. The surface hardness of stainless steel stud bolts ranges between 200 and 300 Brinell, and common diameters are produced from 1/4 inch to 3 inches. Threads are manufactured according to ASME B1.1 standard with class 2A or 3A fits.

Operating temperatures for stainless steel stud bolts range from minus 200 to plus 600 degrees Celsius, offering stable performance and excellent corrosion resistance. Their main applications include oil, gas, petrochemical, food, and pharmaceutical industries. Surface coatings are generally unnecessary due to the inherent stainless properties of the steel. Quality control involves tensile testing, hardness testing, chemical analysis, and non-destructive tests such as PT and UT. These stud bolts are ideal for critical connections in industrial environments due to their durability, thermal stability, and corrosion resistance.

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