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AlphaUni317


General Information
Category Gold
Caratage 8-18K
Color Red
Color Shade Rose
Typology Alloys For Gold
Production Process General
Density [cm3] 13.05
Solidus [°C]
Liquidus [°C]
As cast hardness [HV]
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]
Color Coordinates
L*
a*
b*
c*
Mechanical Caracteristics
Tensile Strength (Rm) [MPa]
Yields strength (Rp0.2) [MPa]
Elongation Rupture (A) [%]
As cast Hardness [HV]
Hardness after 70% area red. [HV]
Hardness after annealing [HV]
Hardness after age-hardening [HV]
Casting Processing Parameters
Pre-mixing temperature [°C] 1100
Casting Temperatures Metal [°C] Flask [°C]
Thin (below 0.5 mm ) 1050 - 1080 650 - 680
Medium ( from 0.5-1.2 mm) 1020 - 1050 600 - 650
Thick (Thick 1.2 mm) 990 - 1020 550 - 600
Mechanical Working Parameters
Pre-mixing temperature [°C] 1030-1080
Pickling Sulphuric Acid (%10)
Casting Temperature Metal - from [°C] Metal - to [°C]
Ingot Making 1060 1100
Continuous Casting 1080 1120
Reccomended reductions
Sheet - area or thickness [%] 65
Wire - diameter [%] 45
Mechanical working recommended annealing Temperature [°C] Time [min]
> 5 mm 660 - 680 40
1 - 5 mm 660 - 680 30
< 1 mm 660 - 680 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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