| Sigogi | Cikakkun bayanai | Sigogi | Cikakkun bayanai |
|---|---|---|---|
| Lambar Samfura. | 3j21 | Alloy | Nickel Chromium Iron Alloy |
| Siffa | Zirin | saman | Mai haske |
| Tallafin Samfura | Ee | Faɗi | An keɓance |
| Kauri | An keɓance | Kunshin Sufuri | Akwatin Katako |
| Ƙayyadewa | An keɓance | Alamar kasuwanci | Tankii |
| Asali | China | Lambar HS | 72269990 |
| Ƙarfin Samarwa | Tan 100/Wata |
3 j21-serial open-style is Co – Cr – Ni – Mo wani ƙarfe ne mai ƙarfi, ƙarfe mai ƙarfi,
rabon iyaka ta roba da kuma ajiyar makamashi, ƙarfin gajiya, ƙaramin hysteresis na roba da kuma sakamako mai kyau,
ba shi da maganadisu, juriya mai kyau ta lalacewa, juriyar girgizar ƙasa ta stamping, kyakkyawan juriyar lalata, da sauransu.
Gilashin ƙarfe na tushen cobalt na iya aiki a yanayin zafi na digiri 400 na Celsius ko a yanayin zafi mai ƙarancin zafi.
Kusa da alamar (40KHXM, Elgiloy, NAS604PH, KRN, phynox)
Sinadarin sinadarai %
| C | Mn | Si | P | S | Cr |
| 0.07~0.12 | 1.70~2.30 | <0.6 | <0.01 | <0.01 | 17.0~21.0 |
| Co | Ni | Mo | Ce | Fe |
| 39.0~41.0 | 14.0~16.0 | 6.50~7.50 | 0.1~0.15 | Bal |
aikace-aikace: An yi amfani da ƙarfe mai nauyin 3j21 a matsayin tsohon abu a tsakiyar shekarun 1960 kuma an yi shi kuma an yi amfani da shi tsawon shekaru da yawa.
Ana amfani da shi galibi don juriya ga lalacewa, hana lalatawa, hana girgizar ƙasa, rashin maganadisu, da kuma yawan amfani da iska.
abubuwan da ke da roba, kamar shaft, waya, bazara, bazara da kuma diaphragm.
Ana kuma amfani da shi wajen samar da bearings na musamman, ƙananan shafts, bearings na ball, tamping dies da kayan aikin yankewa.
| Yawan yawa (g/cm3) | 8.3 |
| Juriyar juriya (uΩ.m) | 0.9 |
| Mai sauƙin jurewa ta hanyar maganadisu | 120~240 |
150 0000 2421