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gold jewelry alloys

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Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006259
EISBN: 978-1-62708-169-6
... presents the typical properties and compositions of silver-copper alloys and gold jewelry alloys such as colored gold alloys and white gold alloys. annealing gold alloys precious metals silver-copper alloys PRECIOUS METALS comprise gold (Au), silver (Ag), platinum (Pt), palladium (Pd...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003776
EISBN: 978-1-62708-177-1
... The effect of 0.3% Co addition on the grain refining of a 9 k gold alloy. (a) Without cobalt. (b) With cobalt Fig. 28 Microsection through a piece of jewelry reveals gas porosity defect. 50× Fig. 29 Typical layer of gas pores just beneath the surface. 9× Fig. 30 Detail...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006556
EISBN: 978-1-62708-290-7
... karat yellow gold, 20 μm / 200-400 mm/s. Source: Ref 30. Reprinted by permission from The Santa Fe Symposium on Jewelry Manufacturing Technology Fig. 6 Comparison of the surfaces of laser-melted cobalt-chromium and a copper alloy build. Source: Ref 30. Reprinted by permission from The Santa Fe...
Book Chapter

Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001087
EISBN: 978-1-62708-162-7
... in jewelry are always specified by karats, whereas those used in dentistry and for electronic purposes are designated by percentage. Jewelry golds range from light yellow through deep yellow to reds and greens, and also include a family of whites. Each alloying element has a different effect on the color...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003150
EISBN: 978-1-62708-199-3
... together in nature. The use of the precious metals, also referred to as noble metals, pervades our everyday life. Gold, silver, and platinum are used extensively in making jewelry; gold, silver, and other alloys are used in restorative dentistry; and sterling silver is used for making tableware. Less...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001454
EISBN: 978-1-62708-173-3
... are highly conductive, the process of resistance brazing of precious metals is applicable, but also limited by short times and high current outputs. Jewelry golds are usually yellow or white in color. The term “karat” refers to the fineness or percentage of gold in the alloy, with 24 karat (k) being pure...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001253
EISBN: 978-1-62708-170-2
...Typical flash formulations for decorative gold plating Table 1 Typical flash formulations for decorative gold plating Component or parameter Type of jewelry plating English (24K) Hard (18K) Hamilton (a) White Rose Green Barrel flash Gold as potassium gold cyanide, g/L (oz...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001088
EISBN: 978-1-62708-162-7
... grade of refined gold contains from 99.95 to 99.98% Au and is suitable for most purposes, including dental and jewelry alloys. Metal that contains 99.5% Au is acceptable for international exchange and by the U.S. Mint without a refining penalty. Coin gold containing only copper as a hardener with 89.9...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003829
EISBN: 978-1-62708-183-2
... (a) Platinum-gold alloys perform better than pure platinum Corrosion of platinum in gases Table 16 Corrosion of platinum in gases Gas Temperature Corrosion rate °C °F mm/yr mils/yr Ammonia, with oxidant (a) 950 1740 <0.05 2 Ammonia, pure Elevated Nitridation Carbon...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003834
EISBN: 978-1-62708-183-2
... of clad metals by degree of difficulty in bonding In most cases, when a metal is named, alloys of that metal also apply. Easy to bond Copper/steel Copper/nickel Copper/silver Copper/gold Aluminum/aluminum alloys Tin/copper Tin/nickel Gold/nickel Difficult to bond...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001254
EISBN: 978-1-62708-170-2
... and corrosion. On the other hand, the chemical properties of palladium are quite different from those of gold, which may explain why an effective agent for stripping palladium and palladium alloy electrodeposits has not yet been developed. In service, palladium and palladium alloys tend to exhibit what...
Book Chapter

By Alan Blair
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001252
EISBN: 978-1-62708-170-2
.... , Farr J.P.G. , and Street J. , What Chance the Elimination of Cyanide? , Trans. Inst. Met. Finish. , Vol 69 ( No. 3 ), p 8 – 10 • “Bath for Electroplating of Precious Metal Alloys,” German Patent No. DE 2445538 , 1976 • Blair A. , Formulating High Speed Gold...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003687
EISBN: 978-1-62708-182-5
... Electroless nickel Zinc Cadmium Gold Palladium Rhodium Silver Tin Lead Tin-lead alloys Non-metals Vitreous and porcelain enamels Magnetic steel (including corrosion-resistant steel) C, M C, M (b) C, M C (c) , M (b) C, M B, C, M B, M B, M B, M B, C, M B, C, M B, C, M B (d) , C (d...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001394
EISBN: 978-1-62708-173-3
... of filler-metal wire and flame. (a) and (b) Proper placement. (c) Poor placement Torch soldering techniques are easy to learn when proper training and experience are provided. Torch soldering is used extensively on copper, brass, and other copper alloys. Steel, stainless steel, aluminum, gold...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001309
EISBN: 978-1-62708-170-2
... Solutions Air-Drying and Thermosetting Lacquers Chromium Cadmium Gold Nickel Rhodium Silver Tin Tin-Copper Alloys Tin-Lead Alloys Chemical or Electrolytic Polishing Cleaning and Finishing Plating and Coating Aluminum Bronzes Alloys Containing Silicon Alloys...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001385
EISBN: 978-1-62708-173-3
... no flux is available Large assemblies can be difficult to heat, because of the localized nature of flame heating Torch brazing is commonly used on copper, brass, and other copper alloys, as well as steel, stainless steel, aluminum, carbides, and various heat-resistant materials. Most combinations...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005444
EISBN: 978-1-62708-196-2
... Deoxidized copper, high residual phosphorus (DHP) 0.81 Free-machining copper (0.5% Te) 0.88 Free-machining copper (1% Pb) 0.92 Wrought alloys Gilding, 95% 0.56 Commercial bronze, 90% 0.45 Jewelry bronze, 87.5% 0.41 Red brass, 85% 0.38 Low brass, 0.33 Cartridge brass, 70...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003219
EISBN: 978-1-62708-199-3
... coatings (TiN yields gold-colored deposit, TiC x N y yields rose-colored deposit, TiC yields black deposit, zirconium nitride, ZrN, yields brass-colored deposit) applied to hardware, jewelry, guns, and cutlery Corrosion protection: aluminum on uranium, steel (replacing cadmium), and titanium...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003219
EISBN: 978-1-62708-199-3
...-700, usually <200 Line of sight Chiefly metal, especially Al (a few simple alloys/a few simple compounds) Electronic, optical, decorative, simple masking Ion implantation 200–400, best <250 for N Line of sight Usually N (B, C) Wear resistance for tools, dies, etc. Effect much deeper...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003145
EISBN: 978-1-62708-199-3
... include (a) white metal (92Sn-8Sb) used for jewelry, (b) hard tin (99.6Sn-0.4Cu) used for collapsible tubes and foils, and (c) tin foil (92Sn-8Zn) used for food packaging. Lead-calcium-tin alloys have been developed for storage-battery grids, largely as replacements for Sb-Pb alloys. The use...