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A1. Conductivity overview of typical alloys for investment precious metals
Designation
Gold 999
Gold 995
Gold 986
Gold 916 (A)
Gold 916 (B)
Gold 916 (C)
Gold 900
Silver 999
Silver 958
Silver 925
Silver 900
Silver 835
Silver 625
Please note the additional information on our homepage at www.gold-analytix.com.
Investment gold bars (Degussa, Umicore, Heraeus, Agosi etc.), Vienna Philharmonic, American Buffalo,
Type A
Kangaroo Nugget, Maple Leaf, China Panda, Mexico Libertad, Australian Lunar, Coins Germany (100 marks
collector coins etc.), UK Gold Britannia (since 2013), Spain 5000 to 80000 pesetas
Type B
Mainly in Turkey (Nzp, Nadir, Altin) and India (RSBL) known alloy; special case: Austria 1000 shillings 1997/98
Please note: This is the target value of the 986 alloy for objects thicker than 1 mm (25.5 MS/m). The 1&4 ducat
Austrian coins and their restrikes (0.71-0.75 mm), which are almost exclusively found in practice, have a
Type C
slightly higher conductivity (27-29 MS/m).
South Africa Krugerrand, UK Gold Britannia (1987-89), Canada 100 dollars, Turkey 100 piasters, Australia 200
dollars Gold Koala, UK Sovereign, Chile 5 pesos (1895-1980), 20 pesos (1896-1917), Peru Libra (1898-1969),
Type D
Peru 50000 & 100000 soles (916 Au + 84 Cu)
Type E
American Gold Eagle from the US Mint since 1986, nominal value in US dollars (916 Au + 54 Cu + 30 Ag)
UK Britannia (1990-2012), 916 Au + 42 Cu + 42 Ag
Type F
Germany Reichsmark, Austria Crown Emperor Franz Joseph until 1915 & restrikes, Greece Drachma, Austria
Babenberger, Austria Florin, Swiss Vreneli (10-100 FR, 1897-1949), Netherlands Wilhemina, France
Marianne/Napoleon/Republic, Italy Umberto I, Vittorio Emanuele II, Denmark Frederik VIII, Belgium
Type G
Albert/Leopold II, Russia Ruble Alexander III/Nikolaus II, Russia Tscherwonetz, Gold Liberty Head US / Double
Eagle, Chile Peso (exceptions see type C), Mexico Centenario, Peru 5 to 10 soles (1956-1979), Spain 10 to 100
pesetas
Canada Maple Leaf, Austria Philharmonic, American Silver Eagle, Australian Koala / Kookaburra, UK Britannia
Type H
Silver (from 2013), Armenia Noah's Ark, China Panda, Lunar, Mexico Libertad (from 1996)
Type I
UK Britannia Silver (1997-2003)
Austria Maria Theresia Taler, many medals, 10 € commemorative coins 2002-2010 and 20 € 2016-today, the
Type J+K
values are only valid for 900 and 925 silver or copper-alloys & coins after 1945, older coins sometimes consist
of silver-nickel alloys - these are 35-38 MS/m!
Type L
Unión Monetaria Latina, francos, lira, etc.
DM & € commemorative coins BRD e.g. 5 DM 1953-1979, 10 DM 1987-1997 & 10 € 2011-2015
Type M
28
Electrical
Type
conductivity
[MS/m]
A
44.7
B
35.2
C
25.5
D
9.7
E
11.1
F
11.8
G
8.9
H
61.0
I
52.5
J
51.0
K
50.2
L
48.5
M
47.0
Tolerance
Fineness
range
[‰]
conductivity
43.5-48.4
999/999.9
34-36.5
995
25-29
986
9.5-10
916
10.8-11.4
916
11.5-12.1
916
8.5-9.4
900
59-64
999/999.9
52-55.5
958
49.5-52
925
49.5-52
900
48.5-49.5
835
46.4-48.5
625
Density
3
[g/cm
]
19.3
19.2
19.0
17.5
17.8
17.8
17.2
10.50
10.41
10.37
10.3
10.17
9.8
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