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AlphaCast308


General Information
Category Gold
Caratage 10-14K
Color Red
Color Shade Russian Red
Typology Alloys For Gold
Production Process General
Density [cm3] 11.45
Solidus [°C] 850
Liquidus [°C] 930
As cast hardness [HV] 135
Ingredient
  • Ag
  • Cu
  • Zn
  • Ni
  • Deoxidant
  • Grain Refiner
  • Other
Typical Applications
Open System
Closed System
Sheet Production
General Characteristics
As Cast Grain Size [µm] 500
Color Coordinates
L* 86
a* 7.2
b* 15.5
c* 17.1
Mechanical Caracteristics
Tensile Strength (Rm) [MPa] 380
Yields strength (Rp0.2) [MPa] 155
Elongation Rupture (A) [%] 42
As cast Hardness [HV] 135
Hardness after 70% area red. [HV] 250
Hardness after annealing [HV] 140
Hardness after age-hardening [HV] 140
Casting Processing Parameters
Pre-mixing temperature [°C] 1100
Casting Temperatures Metal [°C] Flask [°C]
Thin (below 0.5 mm ) 1040 - 1070 660 - 720
Medium ( from 0.5-1.2 mm) 1020 - 1040 600 - 660
Thick (Thick 1.2 mm) 1000 - 1020 540 - 600
After casting, cooling time for the flaks is 15 m
After casting, cooling time for the flaks is 45 m
Sülfürik asit (%10) - 5 dk. - 50°C
Age Hardening Processing Parameters
Single step age-hardening treatment Temperature [°C] Time [min] Quenching Age-hardening
Age-hardening 300 100 Cooling in furnuce
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