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AlphaCast240


General Information
Category Gold
Caratage 10K-14K
Color White
Color Shade Standart White
Typology Alloys For Gold
Production Process İnvestment Casting
Density [cm3] 11.55
Solidus [°C] 779
Liquidus [°C] 965
As cast hardness [HV] 171
Ingredient
  • Ag
  • Cu
  • Zn
  • Ni
  • Deoxidant
  • Grain Refiner
  • Other
Typical Applications
Open System
Closed System
Sheet Production
General Characteristics
As Cast Grain Size [µm] 170
Color Coordinates
L* 88.22
a* 0.35
b* 10.78
c* 10.78
Mechanical Caracteristics
Tensile Strength (Rm) [MPa] 548
Yields strength (Rp0.2) [MPa] 265
Elongation Rupture (A) [%] 39
As cast Hardness [HV] 171
Hardness after 70% area red. [HV]
Hardness after annealing [HV]
Hardness after age-hardening [HV] 252
Casting Processing Parameters
Pre-mixing temperature [°C] 1100
Casting Temperatures Metal [°C] Flask [°C]
Thin (below 0.5 mm ) 1040 - 1080 660 - 720
Medium ( from 0.5-1.2 mm) 1020 - 1040 620 - 660
Thick (Thick 1.2 mm) 1000 - 1020 540 - 620
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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