Strong acids and some concentrated weak acids are corrosive, but there are exceptions such as carboranes and boric acid.
stɹˈɔŋ ˈæsɪdz ænd sˌʌm kˈɑːnsəntɹˌeɪɾᵻd wˈiːk ˈæsɪdz ɑːɹ kɚɹˈoʊsɪv, bˌʌt ðɛɹˌɑːɹ ɛksˈɛpʃənz sˈʌtʃ ɐz kˈɑːɹboːɹˌeɪnz ænd bˈoːɹɪk ˈæsɪd.