I-standard duplex impahla iqukethe ama-chromium angama-22%, u-4% u-nickel, ama-3% molybdenum, manganese, silicon, nitrogen, phosphorus, ikhabhoni, i-phosphorus, ikhabhoni kanye nesibabule. Izikulufo ezingama-Ruplex Izikulufo ezingama-2205 namanye ama-fasteners anezithelo eziphansi ezifinyelela kuma-97ksi kanye namandla amancane ashubile aze afike ku-131ksi. I-Duplex 2205 Ama-Hex Bolts acishe aqine kabili njengezinsimbi zensimbi ye-auntenitic. Banezakhiwo eziphakeme zemishini, ngakho-ke izikopelo ezingama-1.4462 Alloy ezingama-2205 nezinye izinhlobo zama-bolts zingahlangabezana nokucaciswa okuhlukile njenge-ASME SA 182, 240, 479, 789.