stage of the creep process in which it evolves at a constant strain rate (and creep rate) (see: creep, creep rate, strain rate; comapre: primary creep, tertiary creep), roome teine staadium, mille kestel moonekiirus (ja roomekiirus) on püsiv (vt roome, roomekiirus, moonekiirus; vrd primaarroome, tertsiaarroome)