EN31

Overview

EN31 is a high-carbon chromium bearing/tool steel offering high hardness, wear resistance and dimensional stability.

Chemical Compositions

C

Si

Mn

Cr

P/S

0.90 – 1.20

0.10 – 0.35

0.30 – 0.75

1.00 – 1.60

controlled

Heat Treatment

  • Spheroidizing/soft annealing
  • Hardening approximately 820–860°C
  • Oil quenching
  • Low-temperature tempering according to required hardness

Mechanical Properties

  • Hardened hardness: approximately 58–65 HRC
  • High wear resistance
  • High compressive strength
  • Good dimensional stability

Equivalent Grades

  • EN: EN31
  • AISI/SAE: 52100
  • DIN: 1.3505 / 100Cr6
  • JIS: SUJ2

Applications

  • Bearings
  • Bearing components
  • Rollers
  • Bushes
  • Gauges
  • Punches
  • Dies
  • Wear-resistant components

Available Forms

  • Round bars
  • Flats
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