Alloys or metallic compositions – Ferrous – Over 10 percent nickel containing
Patent
1998-04-20
1999-09-28
Yee, Deborah
Alloys or metallic compositions
Ferrous
Over 10 percent nickel containing
420581, 420452, 148336, C22C 3840, C22C 1903
Patent
active
059583312
ABSTRACT:
A Fe--Ni based alloy sheet having superior surface characteristic and superior etchability, essentially consisting, by weight, of 30 to 50% nickel, 0.05 to 0.5% manganese, 0.001 to 0.02% silicon, not more than 0.0015% aluminum, not more than 150 ppm oxygen, and the balance iron and incidental impurities, the value of Mn content(weight %)/Si content (weight %) being not less than 20. Preferably, silicon content is 0.001 to 0.01%, aluminum being not more than 0.0005%, oxygen being not more than 90 ppm, sulfur which is one of important impurities being not more than 0.005%, and boron which is one of important impurities being not more than 0.005%.
REFERENCES:
patent: 5605581 (1997-02-01), Inoue et al.
Hayafuji Tetsunori
Ishihara Makoto
Mizuguchi Takeo
Takao Hidemi
Hitachi Metals Ltd.
Yee Deborah
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