347 Bakin Karfe Bar

UNS S34700 (Grade 347)

347 bakin karfe, wanda kuma aka sani da UNS S34700 da Grade 347, bakin karfe ne austenitic wanda aka yi da .08% iyakar carbon, 17% zuwa 19% chromium, 2% matsakaicin manganese, 9% zuwa 13% nickel, 1% iyakar silicon , burbushin phosphorus da sulfur, 1% m zuwa 10% matsakaicin columbium da tantalum tare da ma'auni. na baƙin ƙarfe. Mataki na 347 yana da fa'ida don sabis ɗin zafin jiki mai girma saboda kyawawan kaddarorin injin sa; Har ila yau yana da kyakkyawan juriya ga lalatawar intergranular biyo bayan bayyanar yanayin zafi a cikin kewayon hazo na chromium carbide daga 800 ° zuwa 1500 ° F. Yana kama da Grade 321 game da lalata intergranular wanda aka samu ta hanyar amfani da columbium a matsayin wani abu mai daidaitawa zuwa kara girman wannan siffa. Ba za a iya taurare digiri na 347 ta hanyar maganin zafi ba, amma ana iya samun manyan kaddarorin ta hanyar rage sanyi.

Masana'antun da ke amfani da 347 sun haɗa da:

• Jirgin sama
• Valve

Kayayyakin da aka gina gaba ɗaya ko gaba ɗaya na 347 sun haɗa da:

• Zoben masu tara jirgin sama
• Kayan aikin samar da sinadarai
• Injin sassa
• Fitar da yawa
• High zafin jiki gaskets da fadada gidajen abinci
• Sassan injin roka