904 bakin karfe farantin karfewani nau'i ne na bakin karfe austenitic tare da ƙananan abun ciki na carbon da babban alloying wanda aka tsara don mahalli tare da yanayin lalata. Yana da mafi kyawun juriya na lalata fiye da 316L da 317L, yayin la'akari da farashi da aiki. Kyakkyawan darajar kuɗi. Saboda ƙari na 1.5% jan karfe, yana da kyakkyawan juriya na lalata da rage acid kamar su sulfuric acid da phosphoric acid. Har ila yau, yana da kyakkyawan juriya na juriya ga lalatawar danniya, pitting da kuma lalatawar da ke haifar da hadaddun ions, kuma yana da kyakkyawar juriya ga lalatawar intergranular. A cikin tsantsar sulfuric acid a cikin kewayon maida hankali na 0-98%, yawan zafin sabis na farantin karfe 904L na iya zama sama da digiri 40 Fahrenheit.
A cikin tsantsa acid a cikin kewayon maida hankali na 0-85%, juriyarsa na lalata yana da kyau sosai. A cikin masana'antar phosphoric acid da aka samar ta hanyoyin rigar, ƙazanta suna da tasiri mai ƙarfi akan juriya na lalata. Daga cikin kowane nau'in acid, 904L super austenitic bakin karfe yana da mafi kyawun juriyar lalata fiye da bakin karfe na yau da kullun. A cikin nitric acid mai ƙarfi mai ƙarfi, 904L bakin karfe yana da ƙarancin juriya na lalata fiye da manyan ƙarfe waɗanda ba su ƙunshi azurfa ba. A cikin hydrochloric acid, ana amfani dashi904L bakin karfe farantiAn iyakance ga ƙananan ƙira na 1-2%.
A cikin tsantsa acid a cikin kewayon maida hankali na 0-85%, juriyarsa na lalata yana da kyau sosai. A cikin masana'antar phosphoric acid da aka samar ta hanyoyin rigar, ƙazanta suna da tasiri mai ƙarfi akan juriya na lalata. Daga cikin kowane nau'in acid, 904L super austenitic bakin karfe yana da mafi kyawun juriyar lalata fiye da bakin karfe na yau da kullun. A cikin nitric acid mai ƙarfi mai ƙarfi, 904L bakin karfe yana da ƙarancin juriya na lalata fiye da manyan ƙarfe waɗanda ba su ƙunshi azurfa ba. A cikin hydrochloric acid, ana amfani dashi904L bakin karfe farantiAn iyakance ga ƙananan ƙira na 1-2%.
| Daraja | C | Mn | Si | P | S | Cr | Mo | Ni | Cu |
| 904l | 0.020 max | 2.00 max | 1.00 max | 0.040 max | 0.030 max | 19.00 - 23.00 | 4.00 - 5.00 max | 23.00 - 28.00 | 1.00 - 2.00 |
Lokacin aikawa: Mayu-23-2024