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Master Alloy: G840
 
Color: Green
Alloy Characteristics 10K 14K 18K
Density (g./cm3)
 12.69 14.10

15.89
Hardness – As Cast (Hv)
      
Hardness – Cold Worked /Reduced 60% (Hv)
      
Recommended Investment Casting Parameters
 10K 14K 18K
Casting Temperature Range (oC)
1010-1035 995-1025 1100-1120
Flask Temperature Range (oC)
 437-677 437-677 437-677
Quench Time (min.)
 20 min. 20 min. 20 min.
Re-alloying Scrap Percentage
 <75% <75% <75%
Recommended Cast Tree Cleaning and Drying Procedure
After a preliminary removal of the investment powder during quenching, submerge trees in a hot (80-100oC) 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!