50NILYW Steels for carburizing

  • Aerospace

Spécifications

  • Common name
    M50NIL
  • EU
    13MoCrNiV42-16-14
  • USA
    UNS:K91231

Typical composition

  • C
    0,13
  • Ni
    3,4
  • Cr
    4,15
  • Mo
    4,25
  • V
    0,25

Applications

For service temperature up to 400°C:
• Aerospace bearings
• Gear assembly (integrated runway …).

Mechanical properties

• After carburizing and quenching, sub-zero treatment and tempering, the surface hardness is approx. 700 HV.
• The good temper resistance of this steel allows it to be used with a duplex treatment (carburizing + quenching + nitriding) to obtain a good case depth and surface hardness of more than 900 HV.

Mechanical features

  • Heat treatment
    T + F + Rv 550°C
  • UTS (N/mm²)
    1400
  • A (%)
    13
  • Solution treated : H
    Annealed : R
  • Thermo-mechanical treatment : TM
    Quenched and tempered : T+RV
  • Sub-zero treatment : F
    Solution treated and aged : T+RV
50NILYW_FR
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See also

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