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AlphaCast199


General Information
Category Gold
Caratage 9-14K
Color Yellow
Color Shade Deep Yellow
Typology Alloys For Gold
Production Process İnvestment Casting
Density [cm3] 10,92
Solidus [°C] 825
Liquidus [°C] 900
As cast hardness [HV] 105
Ingredient
  • Ag
  • Cu
  • Zn
  • Ni
  • Deoxidant
  • Grain Refiner
  • Other
Typical Applications
Open System
Closed System
Sheet Production
General Characteristics
As Cast Grain Size [µm] 550
Color Coordinates
L* 86,1
a* 1,8
b* 18,6
c* 18,7
Mechanical Caracteristics
Tensile Strength (Rm) [MPa] 425
Yields strength (Rp0.2) [MPa] 220
Elongation Rupture (A) [%] 37
As cast Hardness [HV] 105
Hardness after 70% area red. [HV] 270
Hardness after annealing [HV] 125
Hardness after age-hardening [HV] 110
Casting Processing Parameters
Pre-mixing temperature [°C] 1080
Casting Temperatures Metal [°C] Flask [°C]
Thin (below 0.5 mm ) 1000 - 1030 660 - 720
Medium ( from 0.5-1.2 mm) 980 - 1000 620 - 660
Thick (Thick 1.2 mm) 960 - 980 540 - 600
After casting, cooling time for the flaks is 45 minutes.
After casting, cooling time for the flaks is 15 minutes.
Sulphuric acid (%10) - 5 min - 50°C
Age Hardening Processing Parameters
Single step age-hardening treatment Temperature [°C] Time [min] Quenching Age-hardening
Age-hardening 275 100 Cooling in furnuce
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