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Expired
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GB3555761A
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Vodafone GmbH
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Mannesmann AG
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Publication date
Application filed by Mannesmann AGfiledCriticalMannesmann AG
Publication of GB939094ApublicationCriticalpatent/GB939094A/en
C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C22C—ALLOYS
C22C33/00—Making ferrous alloys
C22C33/02—Making ferrous alloys by powder metallurgy
C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
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Chemical & Material Sciences
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Engineering & Computer Science
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Materials Engineering
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Mechanical Engineering
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Metallurgy
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Organic Chemistry
(AREA)
Powder Metallurgy
(AREA)
Soft Magnetic Materials
(AREA)
Abstract
A mixture consisting of 4.5% to 5.5% preferably 5%, of copper powder, 2.5% to 7.5%, preferably 5%, of nickel powder, the remainder iron powder, is made into a sintered body by hot pressing at a pressure of at least 4 tons/square cm., and a temperature of at least 1083 DEG C.