15MnVq is a high-strength low-alloy (HSLA) steel plate specifically engineered for bridge construction, offering a balance of mechanical performance, weldability, and cost-effectiveness. Here's a detailed analysis based on technical data and industry applications:

Material Classification and Standards

15MnVq falls under Chinese standard GB/T 714-2015 for bridge structural steel, with "15" indicating a carbon content of ~0.15%, "Mn" denoting manganese (1.2–1.6%), "V" representing vanadium (0.04–0.12%), and "q" signifying bridge-specific requirements . It is categorized as a microalloyed steel, designed to provide high strength while maintaining ductility and weldability. While not explicitly listed in GB/T 714-2015, it is recognized in industry practices as a predecessor to modern grades like Q390q, with comparable strength but distinct processing characteristics

 

 

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