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AlphaCast038
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General Information
Category
Gold
Caratage
8-22K
Color
Red
Color Shade
Red
Typology
Alloys For Gold
Production Process
İnvestment Casting
Density [cm
3
]
10.81
Solidus [°C]
Liquidus [°C]
As cast hardness [HV]
Ingredient
Ag
Cu
Zn
Ni
Deoxidant
Grain Refiner
Other
Typical Applications
General Characteristics
As Cast Grain Size [µm]
Color Coordinates
L*
a*
b*
c*
Mechanical Caracteristics
Tensile Strength (Rm) [MPa]
Yields strength (Rp0.2) [MPa]
Elongation Rupture (A) [%]
As cast Hardness [HV]
Hardness after 70% area red. [HV]
Hardness after annealing [HV]
Hardness after age-hardening [HV]
Casting Processing Parameters
Pre-mixing temperature [°C]
1100
Casting Temperatures
Metal [°C]
Flask [°C]
Thin (below 0.5 mm )
1060
-
1090
650
-
680
Medium ( from 0.5-1.2 mm)
1030
-
1060
600
-
650
Thick (Thick 1.2 mm)
1000
-
1030
550
-
600
Trees without stones
Stone-in-place casting trees
Pickling :
Age Hardening Processing Parameters
Single step age-hardening treatment
Temperature [°C]
Time [min]
Quenching
Age-hardening
Age-hardening
300
100
Cooling in furnuce
12
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