Sinadarin Sinadari a cikin %, Invar
| alamar kasuwanci | Sinadarin sinadarai | ||||||||
| Ni | Fe | C | P | Si | Co | Mn | Al | S | |
| ≤ | |||||||||
| 4j42 | 41.5~42.5 | Bal | 0.05 | 0.02 | 0.3 | - | 0.80 | 0.10 | 0.02 |
| 4j45 | 44.5~45.5 | Bal | 0.05 | 0.02 | 0.3 | - | 0.80 | 0.10 | 0.02 |
| 4j50 | 49.5~50.5 | Bal | 0.05 | 0.02 | 0.3 | 1.0 | 0.80 | 0.10 | 0.02 |
| 4j52 | 51.5~52.5 | Bal | 0.05 | 0.02 | 0.3 | - | 0.60 | - | 0.02 |
| 4j54 | 53.5~54.5 | Bal | 0.05 | 0.02 | 0.3 | - | 0.60 | - | 0.02 |
Mahimman abubuwan da ke cikin jiki da kuma halayen injiniya na ƙarfe:
| alamar kasuwanci | Maida wutar lantarki ta thermal | Ƙayyadadden ƙarfin zafi | Yawan yawa | Ƙarfin lantarki | Ma'anar Curie |
| 4j54 | 18.8 | 502J | 8.28 | 0.42 | 530 |
| Tsarin faɗaɗawa na yau da kullun (10 -6 / ºC) | ||||||||
| Matsakaicin zafin jiki | 20~100 | 20~200 | 20~300 | 20~350 | 20~400 | 20~450 | 20~500 | 20~600 |
| Faɗaɗa ma'aunin | 10.7 | 12.7 | 10.7 | 10.7 | 10.8 | 10.3 | 10.8 | 11.2 |
Ana amfani da ƙarfe mai laushi na 4 j54 don gilashin Mica, wanda aka yi da ƙarfe mai laushi.
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