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Master Alloy: Cu5
Color:
Silver-White
Usage:
925 Ag
Alloy Characteristics
925 Ag
Density (g./cm
3
)
10.30
Hardness – As Cast (Hv)
57
Hardness – Cold Worked /Reduced 60% (Hv)
145
Recommended Investment Casting Parameters
925 Ag
Casting Temperature Range (
o
C)
1005C
Flask Temperature Range (
o
C)
437-680C
Quench Time (min.)
15-20 min.
Re-alloying Scrap Percentage
<75%
Recommended Cast Tree Cleaning and Drying Procedure
After a preliminary removal of the investment powder during quenching, submerge trees in a hot (80-100
o
C) 50% phosphoric acid solution for 15-20 minutes. Rinse well with cool water to remove any remaining investment powder and base metal oxides. Dry with compressed air.
Do not dry trees in any type of furnace!