SYMPOSIA PAPER Published: 01 January 2024

Characterization and Performance Verification of a Novel Aero-Engine Bearing Steel


A novel steel called Arctic 15 has been developed to achieve the increased speed and load demands for hybrid bearings of very high bypass ratio (VHBR) aero-engines. The characteristics of Arctic 15 have been determined, including the structural fatigue resistance and the corrosion resistance. The rolling contact fatigue performance of carburized Arctic 15 has been determined in endurance life tests on angular contact ball bearings. The microstructure response of Arctic 15 to rolling contact fatigue has been characterized using light optical microscopy and x-ray diffraction. This paper describes the test results in detail and gives an outline regarding the future development of the Arctic 15 concept.

Author Information

Kerrigan, Aidan
SKF Research & Technology Development, SE
Coudert, Jean-Baptiste
SKF Aerospace France, FR
Mondelin, Alexandre
SKF Aerospace France, FR
Maheo, Yves
SKF Aerospace France, FR
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Pages: 1–16
DOI: 10.1520/STP164920220088
ISBN-EB: 978-0-8031-7746-8
ISBN-13: 978-0-8031-7745-1