DIN EN ISO 20623-2018 石油及相关产品.用4球法测定润滑油的极限压力和耐磨性(欧洲条件)(ISO 20623-2017); 德文版本EN ISO 20623-2018
Petroleum and related products - Determination of the extreme-pressure and anti-wear properties of lubricants - Four-ball method (European conditions) (ISO 20623:2017); German version EN ISO 20623:2018
This document specifies procedures for the measurement of the extreme pressure (EP) and anti-wear properties of liquid lubricants (categories C, D, F, G, H, M, P of ISO 6743-99), lubricating greases (ISO 6743-9, category X) and other consistent lubricants. The test conditions are not intended to simulate particular service conditions, but to provide information over a range of standard conditions for the purpose of research, development, quality control and fluid ranking. The output is used in lubricant specifications.