ALLOY INDEX Copper Alloys

Copper Development Association P.O. Box 1840 Greenwich, Conn. 06836 Standards for wrought and cast copper and copper alloy products a standards handbook is pubUshed with tolerances, alloy data, terminology, engineering data, processing characteristics, sources and specifications cross-indexes for six coppers and 87 copper-based alloys that are recognized as standards. 

Individually indexed alloys or intermetallic compounds are Aluminium amalgam, 0051 Aluminium-copper-zinc alloy, 0050 Aluminium-lanthanum-nickel alloy, 0080 Aluminium-lithium alloy, 0052 Aluminium-magnesium alloy, 0053 Aluminium-nickel alloys, 0055 Aluminium-titanium alloys, 0056 Copper-zinc alloys, 4268 Ferromanganese, 4389 Ferrotitanium, 4391 Lanthanum-nickel alloy, 4678 Lead-tin alloys, 4883 Lead-zirconium alloys, 4884 Lithium-magnesium alloy, 4681 Lithium-tin alloys, 4682 Plutonium bismuthide, 0231 Potassium antimonide, 4673 Potassium-sodium alloy, 4646 Silicon-zirconium alloys, 4910... 

NEMI Press Release, NEMI Group Recommends Tin/Silver/Copper Alloy as Industry Standard for Lead-Free Solder Reflow in Board Assemblies, Jan. 24, 2000, web site [Pg.974]

The aim of the present paper is to extent the previous work " to different adsorbate than the substrate. We have thus studied the vibrational properties of Au single adatoms on the low-index faces of copper, and compared the present results with the above studies. The choice of Au comes from the fact that the Cu-Au alloys have been widely studied and used as prototype by many groups. 

Alloys of reactive metals are often more pyrophoric than the parent metals. Examples are alloys of titanium with zirconium thorium with copper, silver or gold uranium with tin, lead or gold magnesium with aluminium hafnium with iron [1], Cerium amalgams and thorium-silver alloys are spontaneously flammable when dry [2], Individually indexed alloys are ... 

NH4CI is acidic in aqueous solution the pH of 1%, 3%, and 10% solution at 25°C are 5.5, 5.1 and 5.0, respectively. (Merck 1996. The Merck Index, 12th ed. Rahway, NJ Merck Co.) It loses ammonia and becomes more acidic on prolonged exposure or storage. It reacts with iron, copper, nickel and other metals and some of their alloys such as bronze and brass. It reacts with alkalies forming NH3. 

Alloys were prepared from metals of 99.9% purity by arc melting on a water-cooled copper hearth under an argon atmosphere. The alloys were homogenized at 800° C. Diffraction patterns of cast material were equally as sharp as those of homogenized alloys. X-ray diffraction patterns were taken with filtered FeKa radiation. Computer programs verified x-ray pattern indexes. 

Both metallic zinc and zinc compounds and are known in an art context. Bieganska et al. (1988) describe the use of flakes of metallic zinc while according to the Merck Index (1996), mosaic gold q.vl) can also refer to an alloy of 65.3% copper and 34.7% zinc. There are many zinc compounds that are used as pigments of which zinc oxide, lithopone and zinc chromate are the principal materials. The group includes ... 

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