What material is the B7 bolt made of?

B7 bolts, a type of high-strength alloy steel Bolt, strictly adhere to the material, performance, and dimensional specifications outlined in the ASTM A193 standard. This standard, established by the American Society for Testing and Materials (ASTM), is specifically tailored for bolt materials under high temperature, high pressure, and special environmental conditions. In addition to basic alloy elements, B7 bolts also incorporate molybdenum, manganese, and silicon, imparting excellent mechanical properties and durability to them.

In terms of pairing, B7 bolts are always accompanied by nuts of grade 2H, ensuring the strength and stability of connections. The crucial alloy steel material exhibits favorable metallurgical characteristics, including high strength, hardness, and fatigue resistance. Through heat treatment, this alloy steel can demonstrate outstanding mechanical performance, enabling B7 bolts to withstand various high tension and compression forces.

What's even more remarkable is the superb high-temperature performance of the alloy steel material used in B7 bolts. Even under extremely high-temperature environments, it maintains stable strength, making B7 bolts predominant in fields such as petroleum refining, chemical equipment, and other high-temperature operating conditions.

Of course, corrosion resistance is also a major highlight of B7 bolts. Alloy steel itself possesses robust corrosion resistance, but in some specific corrosive environments, additional protective measures such as coatings or platings may be necessary.