This document specifies a method for the determination of the transverse rupture strength of sintered metal 

materials, excluding hardmetals. The method is particularly suitable for comparing the sintered strength of 

a batch of metal powder with that of a reference powder or with a reference strength.

 The method is applicable to sintered metal materials, excluding hardmetals, whether they have been 

subjected to heat treatment after sintering or not, and also to materials that have been sized or coined after 

sintering.

 It is especially suitable for materials having a uniform hardness throughout their section and negligible 

ductility, i.e. a ductility corresponding to a permanent deformation of less than about 0,5 mm measured 

between the two supports during the transverse rupture strength determination. If the test is applied to 

materials under conditions other than those specified above, the conditions shall be reported.

 NOTE 

The permanent deformation can be measured with sufficient precision from the two fragments of the 

broken or cracked bar by indexing the lower surface. Alternatively, the deflection of a straight line drawn horizontally 

on the side of the test piece can be measured using an optical instrument such as a measuring microscope or optical 

comparator.