Nau'in 347H shine babban carbon austenitic chromium bakin karfe. An samo shi a cikin aikace-aikacen da ke buƙatar juriya mai zafi, sauran manyan fasalolin ƙira sun haɗa da:
- Irin wannan juriya da kariyar lalata kamar Alloy 304
- Ana amfani da kayan aiki masu nauyi masu nauyi lokacin da ba zai yiwu ba
- Kyakkyawan juriya na iskar shaka, daidai da mafi yawan sauran bakin karfe austenitic
- Maɗaukakin carbon yana ba da damar ingantattun kaddarorin masu rarrafe zafin jiki
Saboda nau'in nau'in 347H na musamman ana amfani dashi a cikin aikace-aikace iri-iri a yawancin masana'antu masu mahimmanci na yau:
- Bututun tukunyar jirgi da casings
- Bututun matatar mai da iskar gas
- Radiant superheaters
- Bututun tururi mai ƙarfi
- Bututun musayar zafi
- Cabin heaters
- Nauyin katanga mai welded kayan aiki
- Matsalolin sharar jirgin sama da zoben tattarawa
Tare da babban matakin carbon sannan Nau'in 347 na yau da kullun, Nau'in bakin karfe na 347H yana da nau'in sinadarai na musamman wanda ya haɗa da masu zuwa:
- Fe balance
- Cr 17-20%
- Ni 9-13%
- C 0.04-0.08%
- Mn 0.5-2.0%
- S 0.30% max
- 0.75% max
- P 0.03% max
- Cb/Ta 1% max
Lokacin aikawa: Agusta-03-2020