The strength grade of titanium alloy bolts is usually classified according to the international standard ISO 898-1. This standard divides bolts and nuts into multiple strength grades, including but not limited to 4.6, 4.8, 5.6, 5.8, 6.8, 8.8, 9.8, 10.9, 12.9, etc. Among them, the strength grade of titanium alloy bolts can reach a higher level, such as grade 12.9, with a minimum axial tensile stress strength of 12×100=1200MPa and a minimum axial yield strength of 0.9×1200=1080MPa.

It should be noted that the strength grade of titanium alloy bolts is not only related to its alloy composition but also affected by the processing technology. Therefore, when selecting titanium alloy bolts, it is necessary to select the corresponding strength grade and material according to the specific use environment and performance requirements.

In addition, the common grades of titanium alloy bolts include TA1, TA2, TA3, TA4, TA5, TA6, TA7, TA9, TA10, TC4, etc., among which TC4 and other titanium alloy grades are more common in bolt manufacturing. These grades of titanium alloy materials have the advantages of low density, high strength, corrosion resistance, good biocompatibility, etc., and are suitable for fastener applications in various complex environments.

In general, titanium alloy bolts have various strength grades, high strength and excellent performance, and are widely used in aerospace, automobile, chemical, and other fields. When selecting and using them, their performance characteristics and application environment need to be fully considered to ensure their safety and reliability.

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