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Sterling Silver and its Master Alloys HEAREUS

Sterling silver is one of the most unforgiving alloys in jewelry production. To overcome the common casting problems such as red-stain and tarnishing problems, Heraeus has developed a series of sterling silver and its corresponding master alloys. Special additives have been added to the alloys to enhance its oxidation resistance and fluidity resulting better casting performance. Besides, all the sterling silver alloys from Heraeus already contain special ingredients to delay the tarnishing process. Insufficient hardness is an intrinsic weakness of sterling silver jewelry. To solve this problem, Heraeus has developed a new sterling silver of substantially high hardness of 70 HV rendering its application for sophisticated designs possible

Alloy No
Color
Karat
Application
Hardness
(HV)
Casting Temperature/°C
Sterling
Alloy
O-CAG H-220
White
925Ag
Casting, Rolling, Stone casting
72
960-980
O-AAG
H-PAT
White
925Ag
Casting, Rolling, Stone casting
70
960-980
O-DAG
H-330A
White
925Ag
Casting, Rolling, Stone casting
70
960-980
O-BAG
H-336
White
925Ag
Casting, Rolling, Stone casting
64
960-980
O-GAG
H-350
White
925Ag
Casting, Rolling,
Stone casting
70
960-1000
O-FAG
H-430
White
925Ag
Casting, Rolling,
Stone casting
67
960-980
O-ZAG
H-449
White
925Ag
Casting, Rolling, Stone casting
65
960-1000
O-SAG
H-550
White
925Ag
Casting, Rolling, Stone casting
73
960-1000
H-PS
-
Pink
50.0%
Casting,
Rolling
70
940-960