904L shine Super Austenstic Bakin Karfe tare da ƙananan abun ciki na carbon.An yi niyya don amfani a ƙarƙashin yanayi mara kyau.An tabbatar da aikace-aikacen a cikin shekaru masu yawa kuma an samo asali ne don tsayayya da lalata a cikin sulfuric acid.An daidaita shi kuma an amince dashi don amfani da jirgin ruwa mai matsa lamba a ƙasashe da yawa.A tsari, 904L yana da cikakken austenitic kuma baya kula da hazo ferrite da matakan sigma fiye da maki austenitic na al'ada tare da babban abun ciki na molybdenum.A dabi'a, saboda haɗuwa da ingantacciyar abun ciki na chromium, nickel, molybdenum da jan karfe 904L yana da kyakkyawan juriya ga lalata gabaɗaya, musamman a yanayin sulfuric da phosphoric.
C | Cr | Ni | Mo | Si | Mn | P | S | Cu | N |
≤0.02 | 19.0-23.0 | 23.0-28.0 | 4.0-5.0 | ≤1.0 | ≤2.0 | ≤0.045 | ≤0.035 | 1.0-2.0 | ≤1.0 |
Yawan yawa (g/cm3) | Wurin narkewa (℃) | Na roba modules (GPa) | Ƙididdigar faɗaɗawar thermal (10-6℃-1) | Ƙarfafawar thermal (W/m ℃) | Electric resistivity (μΩm) |
8.0 | 1300-1390 | 195 | 15.8 | 12 | 1.0 |
Zazzabi (℃) | b (N/mm2) | б0.2 (N/mm2) | 5 (%) | HRB |
Yanayin dakin | ≤490 | ≤220 | ≥35 | ≤90 |
ASME SB-625, ASME SB-649, ASME SB-673, ASME SB-674, ASME SB-677
•Kyakkyawan juriya ga lalata lalata da ɓarna
•High juriya ga danniya lalata fatattaka, intergranular, mai kyau machinability da weldability
•A cikin dukkan nau'ikan nau'ikan phosphates904L gami da juriya na lalata sun fi na bakin karfe na yau da kullun.
•A cikin mai ƙarfi oxidizing nitric acid, idan aka kwatanta da babban gami ba tare da molybdenum karfe sa, 904L yana nuna ƙananan lalata juriya.
•Wannan gami yana da mafi kyawun juriyar lalata fiye da na bakin karfe na al'ada.
•Rage yawan lalata na rami da gibba don babban abun ciki na nickel, kuma suna da juriya mai kyau ga lalatawar damuwa.fashewa, a cikin yanayin maganin chloride, maida hankali na maganin hydroxide da wadataccen hydrogen sulfide.
•Man fetur da petrochemical kayan aiki, kamar reactor na petrochemical kayan aiki, da dai sauransu.
•Sulfuric acid ajiya da kayan sufuri, kamar masu musayar zafi, da sauransu.
•Power shuka flue gas desulfurization devicen, Main sassa na amfani: da absorber hasumiya jiki, flue, ciki sassa, fesa tsarin, da dai sauransu
•Organic acid scrubber da fan a cikin tsarin sarrafawa.
•Ruwa magani shuka, ruwa zafi Exchanger, papermakers, sulfuric acid, nitric acid kayan aiki, acid,
•Masana'antar harhada magunguna da sauran kayan aikin sinadarai, jirgin ruwa, kayan abinci.
•Pharmaceutical: centrifuge, reactor, da dai sauransu.
•Abincin shuka: tukunyar soya miya, ruwan inabi dafa abinci, gishiri, kayan aiki da riguna.
•Don tsarma sulfuric acid mai ƙarfi mai ƙarfi matsakaici karfe 904 l yana daidaitawa.