Gabatarwa
Bakin karfen ƙarfe ne masu ƙarfi waɗanda ke da juriya mai ƙarfi fiye da sauran karafa saboda kasancewar adadin chromium mai yawa a cikin kewayon 4 zuwa 30%.Bakin ƙarfe an rarraba su cikin martensitic, ferritic da austenitic bisa tsarin su na crystalline.A cikin addititon, sun samar da wata ƙungiya da aka sani da hazo-taurare karafa, waɗanda ke hade da martensitic da austenitic karfe.
Takardar bayanan da ke gaba za ta ba da ƙarin cikakkun bayanai game da bakin karfe 347H, wanda ya fi ƙarfin sa 304 karfe.
Haɗin Sinadari
Tebur mai zuwa yana nuna nau'in sinadarai na sa 347H bakin karfe.
| Abun ciki | Abun ciki (%) |
|---|---|
| Irin, Fe | 62.83 - 73.64 |
| Chromium, Cr | 17-20 |
| Nickel, Ni | 9 - 13 |
| Manganese, Mn | 2 |
| Silikon, Si | 1 |
| Niobium, Nb (Columbium, Cb) | 0.320 - 1 |
| Karbon, C | 0.04 - 0.10 |
| Phosphorus, P | 0.040 |
| Sulfur, S | 0.030 |
Abubuwan Jiki
An ba da kaddarorin jiki na sa 347H bakin karfe a cikin tebur mai zuwa.
| Kayayyaki | Ma'auni | Imperial |
|---|---|---|
| Yawan yawa | 7.7 - 8.03 g/cm3 | 0.278 - 0.290 lb/in³ |
Kayayyakin Injini
The inji Properties na sa 347H bakin karfe suna nuni a cikin wadannan tebur.
| Kayayyaki | Ma'auni | Imperial |
|---|---|---|
| Ƙarfin jujjuyawar, na ƙarshe | 480 MPa | 69600 psi |
| Ƙarfin ƙarfi, yawan amfanin ƙasa | 205 MPa | 29700 psi |
| Ƙarfin fashewa (@750°C/1380°F, lokaci 100,000 hours) | 38-39 MPa, | Farashin 5510-5660 |
| Na roba modules | 190-210 GPA | 27557-30458 ksi |
| Rabon Poisson | 0.27 - 0.30 | 0.27 - 0.30 |
| Tsawaitawa a lokacin hutu | 29% | 29% |
| Hardness, Brinell | 187 | 187 |
Lokacin aikawa: Maris-30-2023