|
Elements
|
Symbol
|
Composition in %
|
|
Antimony
|
Sb |
0.001 (max)
|
|
Arsenic
|
As | 0.001 (max) |
|
Tin
|
Sn | 0.001 (max) |
|
Copper
|
Cu | 0.001 (max) |
|
Bismuth
|
Bi | 0.025 (max) |
|
Iron
|
Fe | 0.001 (max) |
|
Nickel
|
Ni | 0.001 (max) |
|
Silver
|
Ag | 0.003 (max) |
|
Zinc
|
Zn | 0.001 (max) |
|
Calcium
|
Ca | 0.0005 (max) |
|
Sulphur
|
S | 0.0005 (max) |
|
Aluminum
|
Al | 0.0005 (max) |
|
Selenium
|
Se | 0.0005 (max) |
|
Cadmium
|
Cd | 0.0005 (max) |
|
Tellurium
|
Te | 0.0010 (max) |
|
Lead
|
Pb | 99.970 (min) |
