| 摘要 |
1466970 Ferritic stainless steel CITIZEN WATCH CO Ltd 17 Dec 1974 [17 Dec 1973] 54365/74 Heading C7A A ferritic stainless steel of composition:- The ferritic steel may be annealed at 800-1100‹C in hydrogen for 2 hours, cooled to 600‹C at a cooling rate of 100‹C/hour and then air cooled and possesses a high permeability and good magnetic properties. |
