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AlphaCast217


General Information
Category Gold
Caratage 9-18K
Color White
Color Shade Standart White
Typology Alloys For Gold
Production Process İnvestment Casting
Density [cm3] 11,23
Solidus [°C] 900
Liquidus [°C] 1035
As cast hardness [HV] 140
Ingredient
  • Ag
  • Cu
  • Zn
  • Ni
  • Deoxidant
  • Grain Refiner
  • Other
Typical Applications
Open System
Closed System
Sheet Production
General Characteristics
As Cast Grain Size [µm] 140
Color Coordinates
L* 87,24
a* 1,86
b* 10,31
c* 10,48
Mechanical Caracteristics
Tensile Strength (Rm) [MPa] 645
Yields strength (Rp0.2) [MPa] 400
Elongation Rupture (A) [%] 27
As cast Hardness [HV] 140
Hardness after 70% area red. [HV] 290
Hardness after annealing [HV] 155
Hardness after age-hardening [HV] 195
Casting Processing Parameters
Pre-mixing temperature [°C] 1150
Casting Temperatures Metal [°C] Flask [°C]
Thin (below 0.5 mm ) 1130 - 1150 660 - 720
Medium ( from 0.5-1.2 mm) 1110 - 1130 600 - 660
Thick (Thick 1.2 mm) 1080 - 1110 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 250 100 Cooling in furnuce
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