This International Standard establishes a system of viscosity classification for industrial liquid lubricants and related fluids. This includes mineral oils used as lubricants, hydraulic fluids, electrical oils and for other applications The usual method for kinematic-viscosity determination is that specified in ISO 3104, but this may give anomalous results when used with non-Newtonian fluids (i.e. those whose coefficient of viscosity varies significantly with rate of shear). For such fluids, it is therefore important to state the particular method by which viscosity has been de-termined. It is also recognized that there may be some pure chemicals and naturally occurring products, used as lubricants, which will not fall within this classifi-cation.
BS 4231-1992由英国标准学会 GB-BSI 发布于 1992-12-15,并于 1992-12-15 实施。
BS 4231-1992 在中国标准分类中归属于: J21 润滑与润滑装置,在国际标准分类中归属于: 75.100 润滑剂、工业油及相关产品。
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