Over deze norm
The object of this standard is to describe the terminology and to specify the methods of measuring the d.c. magnetic properties of solid steels. Examples of solid steels are: bars of substantial thickness, cast or forged solid steels as defined under references C1 and D1 of the classification document. Two methods are used: a) the ring method particularly for magnetic field strength of less than 5 kA/m; b) the permeameter method. Different permeameters are used according to the range of the magnetic field strength: - the NPL (National Physical Laboratory) type permeameter for field strengths of between 2 kA/m and 200 kA/m; - the Lliovici permeameter for field strengths of between 2 kA/m and 40 kA/m; - the MH (Medium H) permeameter for field strength of between 2 kA/m and 24 kA/m; - the Santford-Bennett (High H) permeameter for field strengths of between 8 kA/m and 400 kA/m.