jˈuːʒuːəli nˈaɪtɹaɪdz ɑːɹ pɹˈɛzənt ɪn spˈɛʃəl stˈiːlz ðæt kəntˈeɪn ɐn ˈɛlɪmənt wɪð ɐ hˈaɪ ɐfˈɪnᵻɾi tə nˈaɪtɹədʒən.
Usually nitrides are present in special steels that contain an element with a high affinity to nitrogen.