Low alloy lead frame

Details Low alloy lead frame Low alloy lead frame

1980-01-29

1982-03-09

Lewis, Michael L.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75128P, 75128T, 174 52FP, 428620, 428672, 428673, C22C 3802, C22C 3804, C22C 3808, C22C 3820

Patent

active

043187404

ABSTRACT:
Lead frame of sufficient mechanical strength, lowered cost, excellent plating affinity and enhanced anticorrosion is obtained through increased contents of P and Cu and remarkably reduced content of Ni or Cr even without employment of the preparative Ni strike plating necessitated in the prior art.

REFERENCES:
patent: 1959398 (1934-05-01), Whitely
patent: 2280796 (1942-04-01), Comstock
patent: 2901346 (1959-08-01), Huddle et al.
patent: 3574602 (1971-04-01), Gondo et al.
patent: 3711340 (1973-01-01), Korchynsky et al.
patent: 3950140 (1976-04-01), Bliven et al.
patent: 4065625 (1977-12-01), Iwai et al.
patent: 4141029 (1979-02-01), Dromsky
patent: 4266974 (1981-05-01), Nitta et al.
Phosphorous-Iron Alloys Bulletin No. 2, Monsanto Chemicals, pp. 2, 37, 41 (1940).

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