Metal treatment – Compositions – Heat treating
Patent
1989-12-13
1992-01-28
Andrews, Melvyn J.
Metal treatment
Compositions
Heat treating
148 127N, 148328, 148330, 148409, 420 87, 420 95, 420459, 420581, C21D 700
Patent
active
050841114
ABSTRACT:
In composition of Fe-Ni alloy preferably used for lead frames in production of IC, specified amount of Be is added to the basic composition for increase in mechanical strength while maintaining the low thermal expansion characteristic of the conventional Fe-Ni alloys.
REFERENCES:
patent: 3099128 (1963-07-01), Straumann
Kato Jun
Watanabe Tsuyuki
Andrews Melvyn J.
Ip Sikyin
Yamaha Corporation
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