This paper aims at contributing to the experimental background by reporting on the results of uniaxial tensile tests on all-oxide ceramic matrix mini-composites consisting of NextelTM
610 alumina fibres [37] embedded in an alumina matrix phase with more than 30 vol% matrix porosity. A total of 90 minicomposites with three different gauge lengths were tested to investigate whether the mini-composites’ axial tensile strength exhibits a dependence on gauge length. The obtained strength data and the stress–strain curves of the tested mini-composites were analysed to evaluate the mini-composites’ damage and failure behaviour.