Alloy 20 bolong digawe saka nichrome kanthi komposisi 32,5%, kromium, karbon, tembaga, molibdenum, Molybdenum, Molybden, Molybium, Columbium, Columbium, Columbium, Columbium, Columbium, Columbium, Columbium, Columbium, Columbium, Columbium, Columbium, Columbium, Columbium, Columbium, Columbium, Columbium, Columbium, Columbium, Columbium, Columbium, Columbium, Columbium, Columbium, Columbium, Columbium, Columbium, Columbium, Columbium, Columbium, Columbium Aloi 20 minangka campuran stainless steel nickel-molybdenum kanggo aplikasi sing melu asam sulfat. Rintangan karat kasebut uga golek panggunaan liyane ing industri panganan, panganan, farmasi lan plastik industri. 20 Aloi nyegah korosi punggingan lan klorida, lan konten tembaga nglindhungi saka asam sulfat. Aloi 20 dudu SS, nanging wesi nikel (ASTM).