AS B131 PDF

Centre-line-average height method (M-System) for the assessment of surface texture

AS B131 – Centre-line-average height method (M-System) for the assessment of surface texture

The grading of surface texture is dependent of geometrical measurement and the principles laid down may, therefore, be applied to surfaces other than machined surfaces. This Standard relates to: the terminology to be employed in statements relating to surface texture; preferred values for the grading of surface texture (centre-line-average values); standard instrument cut-off values to be used in graphical procedure and instrument construction; the graphical determination of CLA values; the instruments and methods to be employed in the quantitative assessment of surface texture; and the information to be given in statements relating to surface texture. General information on the assessment of surface texture is given in the Appendix.