Over deze norm
NEN-EN 1563 defines the grades and the corresponding requirements for spheroidal graphite cast irons. This European Standard specifies 2 groups of spheroidal graphite cast iron grades by a classification based on mechanical properties measured on machined test pieces prepared from cast samples. The first group deals mainly with ferritic to pearlitic grades. The second group deals with solid-solution strengthened ferritic grades. This European Standard does not cover technical delivery conditions for iron castings (see EN 1559-1  and EN 1559-3 ). This European Standard does not cover: - ausferritic spheroidal graphite cast irons which are specified in EN 1564 ; - low alloyed ferritic spheroidal graphite cast irons which are specified in EN 16124 ; - continuous cast iron bars which are specified in EN 16482 ; - austenitic cast irons which are specified in EN 13835 ; - spheroidal graphite cast irons used for pipes, fittings and their joints which are the subject of EN 545 , EN 598  and EN 969 ; - the grades of spheroidal graphite cast irons as specified in EN 545 which are used for products such as industrial valves, non-industrial manually operated shut-off valves and flanges and their joints, which are the subject of the applicable European product standards.