SYMPOSIA PAPER Published: 01 January 1998

Metallurgical and Tribological Evaluation of 32CrMoV13 Deep Nitrided Steel and XD15N™ High Nitrogen Martensitic Steel for Aerospace Applications


Aerospace bearing applications are increasingly required to operate under very severe operational conditions in terms of speed, load, temperature and environment. Reliability is also required for safety concerns.

Therefore, each bearing application is carefully designed and the bearing steel selected to withstand these conditions.

To meet these requirements, deep nitriding of 32CrMoV13 steel and a new nitrogen martensitic steel have been developed.

The material properties of these steels in relation with manufacturing processes are presented and compared with usual steels.

The new steels provide in their respective coverage, better rolling contact fatigue life, mechanical properties and corrosion resistance.

Further characterizations are still in progress.

Author Information

Pichard, I
Laboratoire Analyse Mesure - SNR ROULEMENTS, Annecy, France
Girodin, D
Laboratoire Analyse Mesure - SNR ROULEMENTS, Annecy, France
Dudragne, G
Laboratoire Analyse Mesure - SNR ROULEMENTS, Annecy, France
Moraux, J-Y
AUBERT & DUVAL, Neuilly Sur Seine, France
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Developed by Committee: A01
Pages: 391–405
DOI: 10.1520/STP12141S
ISBN-EB: 978-0-8031-5381-3
ISBN-13: 978-0-8031-2421-9