A cikin gagarumin ci gaba.904L bakin karfe sandunasun bayyana a matsayin kayan da aka fi so a masana'antu masu zafin jiki, suna canza yadda sassa daban-daban ke tafiyar da yanayin zafi mai tsanani. Tare da juriya na musamman na zafi da juriya na lalata, 904L bakin karfe ya kafa kansa azaman zaɓi don aikace-aikace masu mahimmanci inda yanayin zafi ya haifar da ƙalubale.
Roko na bakin karfe 904L ya ta'allaka ne a cikin keɓaɓɓen abun da ke ciki da kaddarorin sa. Wannan gami yana ɗaukar girman abun ciki na chromium na 23-28%, haɗe tare da ƙarancin carbon da abun cikin nickel mafi girma (19-23%). Waɗannan halayen suna ba da gudummawa ga ƙarfinsa mai ban sha'awa don kiyaye mutuncin tsarin da kuma tsayayya da iskar shaka ko da a cikin yanayin da zai haifar da babbar lalacewa a cikin sauran kayan.
Bakin Karfe 904L BarDaidai Maki
| STANDARD | Ayyukan Aiki NR. | UNS | JIS | BS | KS | AFNOR | EN |
| Saukewa: SS904L | 1.4539 | N08904 | SUS 904L | 904S13 | Saukewa: STS317J5L | Z2 NCDU 25-20 | X1NiCrMoCu25-20-5 |
Haɗin Sinadari
| Daraja | C | Mn | Si | P | S | Cr | Mo | Ni | Cu |
| Saukewa: SS904L | 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 |
Kayan aikin injiniya
| Yawan yawa | Matsayin narkewa | Ƙarfin Ƙarfi | Ƙarfin Haɓaka (0.2% Kashe) | Tsawaitawa |
| 7.95 g/cm 3 | 1350C (2460 °F) | Psi – 71000, MPa – 490 | Psi - 32000, MPa - 220 | 35% |
Lokacin aikawa: Agusta-07-2023