The unique combination of high hardness, strength, and wear resistance makes EN31 steel a versatile material for a wide range of demanding industrial applications. Its performance is most valued in components that experience high rotational speeds, heavy loads, and abrasive contact.

Key applications include:

• Bearings: The primary application for EN31 is in the manufacturing of ball and roller bearings, including bearing races, rollers, and balls. Its high fatigue strength and dimensional stability are critical for long-lasting bearing performance.
• Shafts and Axles: Used for precision ground shafts, spindles, and axles in machinery that requires high rigidity and wear resistance.
• Gears and Bushings: Suitable for manufacturing gears, pinions, and bushings that operate under high contact stress.
• Tools and Dies: EN31 is used for press tools, punches, dies, and gauges where high surface hardness and resistance to deformation are necessary.
• Automotive Components: Employed in various automotive parts like constant-velocity (CV) joints, kingpins, and other components requiring exceptional wear resistance.
• Machine Components: Used for guides, rollers, and mandrels in industrial machinery.