A1. Overview Of The Conductance For Typical Alloys In Investment Objects - Goldanalytix GoldScreenBox Instruction Manual

11.

A1. Overview of the conductance for typical alloys in investment objects

Precious Metal Selection Page 1:
Investment gold bars (Degussa, Umicore, Heraeus, Agosi etc.), Vienna Philharmonic, American Buffalo,
Kangaroo Nugget, Maple Leaf, China Panda, Mexico Libertad, Australian Lunar, coins Germany (100 marks
Type A
collector coins etc.), UK Gold Britannia (since 2013), Spain 5000 to 80000 Pesetas
Please note: The target value is a compromise between the actual target value of the 986 alloy for objects
thicker than 1 mm (25.5 MS/m) and the 1&4 ducat coins Austria and their restrikes (27-29 MS/m), which are
Type B
almost exclusively used in practice and are very frequent - these are special because they are very thin (0.71-
0.75 mm) and therefore below our regular minimum requirement of 1 mm.
South Africa Krugerrand, UK Gold Britannia (1987-89), Canada 100 dollars, Turkey 100 piasters, Australia 200
Type C dollars Gold Koala, UK Sovereigns, Chile 5 pesos (1895-1980), 20 pesos (1896-1917), Peru Libra (1898-1969),
Peru 50000 & 100000 Soles (916 Au + 84 Cu)
American Gold Eagle from the US Mint since 1986, nominal value in US dollars (916 Au + 54 Cu + 30 Ag)
Type D
Type E UK Britannia (1990-2012), 916 Au + 42 Cu + 42 Ag
Germany Reichsmark, Austria Crowns 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 F Albert/Leopold II, Russia Ruble Alexander III/Nikolaus II, Russia Tscherwonetz, Gold Liberty Head US / Double
Eagle, Chile Pesos (exceptions see type C), Mexico Centenario, Peru 5 to 10 Soles (1956-1979), Spain 10 to 100
Pesetas, Attention: Some 900 Au coins, e.g. Iranian Pahlavi) contain silver (similar to Type D). In this case the
conductivity is 1 to 3 MS/m higher than expected
Modern bullion coins: Canada Maple Leaf, Austria Philharmonic, American Silver Eagle, Australian Kangaroo
Type G
etc., UK Britannia Silver (from 2013), Armenia Noah's Ark, China Panda, Lunar, Mexico Libertad (from 1996)
Type H UK Britannia Silber (1997-2003)
Austria Maria Theresia Taler, lots of medals, 10 € commemorative coins 2002-2010 and 20 € 2016-today, values
Type
are only valid for 900 and 925 silver or copper alloys & coins after 1945, older coins sometimes consist of
I+J
silver-nickel alloys - these are 35-38 MS/m!
Type K Latin Monetary Union, francs, lire, etc.
Type L DM & € commemorative coins BRD e.g. 5 DM 1953-1979, 10 DM 1987-1997 & 10 € 2011-2015
Designation
Gold 999
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
Table 2 - Common alloys for coins, medals and bars
Conductance
Type
[MS/m]
A 45.0
B 26.5
C 9.7
D 11.1
E 11.8
F 8.9
G 61.0
H 52.5
I 51.0
J 50.2
K 48.5
L 47.0
Fineness Density
3
[‰] [g/cm ]
999,9 19.3
986 19.0
916 17.5
916 17.8
916 17.8
900 17.2
999,9 10.50
958,4 10.41
925 10.37
900 10.3
835 10.17
625 9.8
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