I’m really shocked from the 1983 range of quality standards of French plated wares!
Hello all
»925-1000« site admin »dognose« has today reported that the 1983 French range of quality standards of French plated wares is as follow:
» Yes, there are the two standards, but the thickness of the plating depends on the type of product that it applied to.
Grade I: Commercial type hotel ware items: 33 microns. Domestic use items: 19 microns. Holloware: 15 microns. Items of decorative use only: 10 microns.
Grade II: Commercial type hotel ware items: 20 microns. Domestic use items: 9 microns. Holloware: 9 microns. Items of decorative use only: 6 microns.
How you would tell the difference between some items, I have no idea. «
For details please look here: http://www.925-1000.com/forum/viewtopic ... 03&e=52403" onclick="window.open(this.href);return false;
I was already shocked first time, when I’ve got to my disposal a cutlery catalogue of »
Barker Brothers, Birmingham«
(See the upper part of this topic.)
Knowing
Continental European electro plated cutlery standards, then it seemed to me unbelievable that their
»
A1« ‘
extra strong Plate’ signification was 32 gram per 12 table forks, or table spoons =
2 2/3 gram each.
»
A« ‘
good strong Plate’ 24 gram per 12 table forks, or table spoons =
2 gram each.
»
B« ‘
well plated’ 16 gram per 12 table forks, or table spoons =
1 1/3 gram each.
»
C« ‘
lighter plated’ 12 gram per 12 table forks, or table spoons =
1 gram each.
»
D« ‘
lighter plated’ 6 gram per 12 table forks, or table spoons =
1/2 gram each.
Or thickness in “
microns”:
»
A1« ‘
extra strong Plate’ signification was 32 gram per 12 table forks, or table spoons =
24.4 microns.
»
A« ‘
good strong Plate’ 24 gram per 12 table forks, or table spoons =
18.3 microns.
»
B« ‘
well plated’ 16 gram per 12 table forks, or table spoons =
12.2 microns.
»
C« ‘
lighter plated’ 12 gram per 12 table forks, or table spoons =
9.15 microns.
»
D« ‘
lighter plated’ 6 gram per 12 table forks, or table spoons =
4.575 microns.
Basics for other calculations:
[Basic for calculations:
10.49 kg specific weight of 1 cubic decimetre Silver of .999-1,000 fineness]
[100 mm x 100 mm x 100 mm = 1,000,000 cubic millimetre =
1 square metre in thickness of 1 mm]
[10.49 kg Silver by a thickness of 1 mm = 1,000 microns thickness]
[
Silver of a thickness of 1 micron = 0.01049 kilogram per square metre]
[For reason of easier calculations:
12 table forks
and 12 table spoons
obverse and reverse = 0.25 square metre]
[1 square metre = 96 table forks, or 96 table spoons, obverse and reverse]
[For reason of easier calculations: 100 table forks, or 100 table spoons, obverse and reverse = 1 square metre]
[
For reason of easier calculations: 1 table fork, or 1 table spoon, obverse and reverse = 0.01 square metre]
Since end of the XIX century are usual in Germany: 90 gram per 0.25 square metres obverse and reverse is plated with Silver of .999-1,000 fineness =
34.32 micron.
Since about 1930 are additional in Germany: 100 gram per 0.25 square metres obverse and reverse is plated with Silver of .999-1,000 fineness =
38.13 micron.
Now in Germany are usual: 150 gram per 0.25 square metres obverse and reverse is plated with Silver of .999-1,000 fineness =
57.2 micron.
Must be the Résumé: Buy French plated flatware and hollowware only if it is
made before 1983?
Kind regards silverport
