A na-eji Alloy 400 eme ihe n'ọtụtụ ebe, ọkachasị nhazi mmiri na mmiri ọgwụ. Ngwa a na-ahụkarị bụ valvụ na nfuli; mgbapụta mgbapụta na propeller; ihe eji eme mmiri na ihe nkedo; ngwa eletriki na eletriki; isi iyi; akụrụngwa nhazi kemịkalụ; mmanụ ụgbọala na tankị mmiri ọhụrụ; crude petroleum stills, nhazi arịa na ọkpọkọ; ọkụ ọkụ feedwater heaters na ndị ọzọ okpomọkụ mgbanwe; na deaerating heaters.