His masterpiece, "How the Steel Was Tempered" (1932–1934), is a largely autobiographical novel portraying the revolutionary Pavel Korchagin, whose iron will and unwavering devotion to the communist cause made the book a model of Soviet heroism and required reading for generations across the Soviet Union, China, and Eastern Europe. The novel was adapted into films, stage productions, and television series.
Ostrovsky's second novel, "Born of the Storm" (1936), depicting revolution and civil war in western Ukraine, remained unfinished because of his early death at thirty-two. Despite his brief life, his works left a lasting mark on twentieth-century literature.