Astm b462 un un und n08020 a kan flange
Astm b462 un und a kan flange da allon 20 shine wani tsararren ausobium-stabbized alloy wanda ya ƙunshi nickbel da ƙananan carbon. Abubuwan sunadarai na Allioy 20 zasu hada da nickel, chromium, da baƙin ƙarfe, tare da wasu ƙarin abubuwa kamar molybdenum da jan jiki. An san allon flanges 20 saboda shi kyakkyawan lalata juriya, har ma a cikin mahalli na sinadarai. Fishan bututun guda 20 suna nuna manyan karfin juriya a cikin kewaye da dauke da citric acid, acid na phosphoric acid, da kuma chlorides. Astm b462 uns n08020 abu sananne ne don kyawawan kayan aikin injin, ko da a tsawan yanayin zafi.
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Astm B462 un und a kan flange alloy 20 flanges bayar da kyakkyawan aiki a cikin tafasasshen-acid, musamman da 40% juriya na sulfuric acid.
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