Fe-Ni alloy sheet excellent in hot workability, adhesivity to plating layer and solderability, and method for manufacturing same
US5234513A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 10, 1991 |
| Grant date | Aug 10, 1993 |
| Priority date | — |
| Expiry date | Oct 10, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/09701
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An Fe-Ni alloy sheet excellent in hot workability, adhesivity to a plating layer and solderability, which consists essentially of: ______________________________________ nickel (Ni): from over 38 to 52 wt. %, silicon (Si): from 0.01 to 0.15 wt. %, calcium (Ca): from 0.0002 to 0.0020 wt. %, magnesium (Mg): from 0.0003 to 0.0020 wt. %, where, Ca + 1/2Mg: from 0.0005 to 0.0025 wt. %, ______________________________________ and the balance being iron and incidental impurities, PA1 where, the contents of carbon (C), nitrogen (N), sulfur (S), oxygen (O), phosphorus (P) and aluminum (Al) as the incidental impurities being respectively: PA1 up to 0.0050 wt. % for carbon, PA1 up to 0.0020 wt. % for nitrogen, PA1 up to 0.0020 wt. % for sulfur, PA1 up to 0.0040 wt. % for oxygen, PA1 up to 0.0040 wt. % for phosphorus, and PA1 under 0.010 wt.% for aluminum, PA1 where, 1/10 C+1/10 N+S+1/5 O +1/2 P.ltoreq.0.0045 wt. %, and ##EQU1## the surface portion of the Fe-Ni alloy sheet having a silicon (Si) segregation rate, as expressed by the following formula, of up to 10%: ##EQU2##
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.