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AlphaCast222


General Information
Category Gold
Caratage 9-18K
Color White
Color Shade Standart White
Typology Alloys For Gold
Production Process İnvestment Casting
Density [cm3] 14,7
Solidus [°C] 885
Liquidus [°C] 905
As cast hardness [HV] 175
Ingredient
  • Ag
  • Cu
  • Zn
  • Ni
  • Deoxidant
  • Grain Refiner
  • Other
Typical Applications
Open System
Closed System
Sheet Production
General Characteristics
As Cast Grain Size [µm] 270
Color Coordinates
L*
a* 3
b* 15
c* 15,3
Mechanical Caracteristics
Tensile Strength (Rm) [MPa] 540
Yields strength (Rp0.2) [MPa] 335
Elongation Rupture (A) [%] 30
As cast Hardness [HV] 175
Hardness after 70% area red. [HV] 315
Hardness after annealing [HV] 185
Hardness after age-hardening [HV] 205
Casting Processing Parameters
Pre-mixing temperature [°C] 1080
Casting Temperatures Metal [°C] Flask [°C]
Thin (below 0.5 mm ) 990 - 1020 660 - 720
Medium ( from 0.5-1.2 mm) 970 - 990 620 - 660
Thick (Thick 1.2 mm) 950 - 970 540 - 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 285 100 Cooling in furnuce
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