AISI 52100 / EN 31
AISI 52100 and EN 31 are equivalent steel grades known for their high carbon and chromium content, which provide excellent hardness, wear resistance, and toughness. These properties make them suitable for various applications, especially in bearings and other high-stress components.
Steel Properties
Tensile Strength: AISI 52100 and EN 31 typically have a tensile strength of 750-1000 MPa (109-145 ksi) depending on the heat treatment condition.
Yield Strength: The yield strength ranges from 480 to 850 MPa (70 to 123 ksi) depending on the heat treatment.
Elongation: Around 18-25% in a normalized or annealed condition.
Hardness: Typically, the hardness after heat treatment is around 60-65 HRC (Rockwell Hardness).
Application
Bearings: Used extensively in ball and roller bearings due to their high hardness, wear resistance, and fatigue strength.
Automotive: Components such as axle shafts, transmission parts, and gears.
Aerospace: Aircraft engine components and landing gear.
Machine Tools: Tool holders, cutting tools, and mandrels.