An alloy of 41% caesium, 47% sodium, and 12% potassium has the lowest known melting point of any metal or alloy, −78 °C.
ɐn ˈælɔɪ ʌv fˈoːɹɾi wˈʌn pɚsˈɛnt sˈiːsiəm, fˈoːɹɾi sˈɛvən pɚsˈɛnt sˈoʊdiəm, ænd twˈɛlv pɚsˈɛnt pətˈæsiəm hɐz ðə lˈoʊɪst nˈoʊn mˈɛltɪŋ pˈɔɪnt ʌv ˌɛni mˈɛɾəl ɔːɹ ˈælɔɪ, mˈaɪnəs sˈɛvənti ˈeɪt dᵻɡɹˈiːz sˈiː.