Alloy 910 by Taulman is one of the strongest 3D printing filaments available.

Hot-end print temperature 245-250C
Incredibly resilient, stiff, and strong
Comparable to polycarbonate, easier to print and almost as strong
With a tensile strength of 8,500 PSI when 3D printed, Alloy 910 is almost as strong as polycarbonate. Unlike polycarbonate that requires a hot-end capable of reaching near 300C
Perfect for printed objects that need to be strong and stiff like enclosures, high-impact parts, and even mechanical linkages used in robotics and production environments