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AlphaFine743


General Information
Category Gold
Caratage 8-14K
Color Yellow
Color Shade Deep Yellow
Typology Alloys For Gold
Production Process Plastic Deformation and Handmade
Density [cm3] 11,4
Solidus [°C] 830
Liquidus [°C] 900
As cast hardness [HV] 145
Ingredient
  • Ag
  • Cu
  • Zn
  • Ni
  • Deoxidant
  • Grain Refiner
  • Other
Typical Applications
Open System
Closed System
Press
CNC and Lathe Production
Handmade
Hollow Chain
Machine Chain
Wire Production
Production of tube from continuous casting
Sheet Production
Hollow chain Production
General Characteristics
As Cast Grain Size [µm] 70
Color Coordinates
L* 87
a* 1,9
b* 18,4
c* 18,5
Mechanical Caracteristics
Tensile Strength (Rm) [MPa] 480
Yields strength (Rp0.2) [MPa] 285
Elongation Rupture (A) [%] 30
As cast Hardness [HV] 145
Hardness after 70% area red. [HV] 250
Hardness after annealing [HV] 140
Hardness after age-hardening [HV] 180
Mechanical Working Parameters
Pre-mixing temperature [°C] 990-1040
Pickling Sulphuric Acid (%10)
Casting Temperature Metal - from [°C] Metal - to [°C]
Ingot Making 990 1040
Continuous Casting 1030 1100
Reccomended reductions
Sheet - area or thickness [%] 70
Wire - diameter [%] 45
Mechanical working recommended annealing Temperature [°C] Time [min]
> 5 mm 630 - 670 40
1 - 5 mm 630 - 670 30
< 1 mm 630 - 670 20
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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