Bakin karfe 309kuma 310 duka ƙarfe ne masu jure zafi, amma suna da wasu bambance-bambance a cikin abun da suke da shi da kuma aikace-aikacen da aka yi niyya.309: Yana bayar da kyakkyawan juriya ga zafin jiki mai yawa kuma yana iya jure yanayin zafi har zuwa kusan 1000°C (1832°F). Sau da yawa ana amfani da shi a cikin sassan tanda, masu musayar zafi, da kuma yanayin zafi mai yawa.310: Yana ba da mafi kyawun juriya ga zafin jiki mai yawa kuma yana iya jure yanayin zafi har zuwa kusan 1150°C (2102°F). Ya dace da amfani a cikin yanayin zafi mai tsanani, kamar tanderu, murhu, da bututun mai haske.
Sinadarin Sinadarai
| Maki | C | Si | Mn | P | S | Cr | Ni |
| 309 | 0.20 | 1.00 | 2.00 | 0.045 | 0.03 | 22.0-24.0 | 12.0-15.0 |
| 309S | 0.08 | 1.00 | 2.00 | 0.045 | 0.03 | 22.0-24.0 | 12.0-15.0 |
| 310 | 0.25 | 1.00 | 2.00 | 0.045 | 0.03 | 24.0-26.0 | 19.0-22.0 |
| 310S | 0.08 | 1.00 | 2.00 | 0.045 | 0.03 | 24.0-26.0 | 19.0-22.0 |
Kadarar Inji
| Maki | Gama | Ƙarfin tensile, min,Mpa | Ƙarfin samarwa, min,Mpa | Ƙara girma a cikin inci 2 |
| 309 | An gama da zafi/An gama da sanyi | 515 | 205 | 30 |
| 309S | ||||
| 310 | ||||
| 310S |
Sifofin Jiki
| SS 309 | SS 310 | |
| Yawan yawa | 8.0 g/cm3 | 8.0 g/cm3 |
| Wurin narkewa | 1455 °C (2650 °F) | 1454 °C (2650 °F) |
A taƙaice, manyan bambance-bambancen da ke tsakanin sandunan bakin ƙarfe 309 da 310 suna cikin tsarinsu da juriyar zafinsu. 310 yana da ɗan ƙaramin chromium da ƙarancin sinadarin nickel, wanda hakan ya sa ya fi dacewa da amfani da zafin jiki mafi girma fiye da 309. Zaɓin da za ka yi tsakanin su biyun zai dogara ne akan takamaiman buƙatun aikace-aikacenka, gami da zafin jiki, juriyar tsatsa, da kuma halayen injiniya.
Lokacin Saƙo: Agusta-07-2023