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AlphaFine743
8
9
10
14
General Information
Category
Gold
Caratage
8-14K
Color
Yellow
Color Shade
Deep Yellow
Typology
Alloys For Gold
Production Process
Plastic Deformation and Handmade
Density [cm
3
]
10,85
Solidus [°C]
780
Liquidus [°C]
870
As cast hardness [HV]
135
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*
87,1
a*
1,6
b*
18,5
c*
18,57
Mechanical Caracteristics
Tensile Strength (Rm) [MPa]
475
Yields strength (Rp0.2) [MPa]
260
Elongation Rupture (A) [%]
30
As cast Hardness [HV]
135
Hardness after 70% area red. [HV]
230
Hardness after annealing [HV]
140
Hardness after age-hardening [HV]
165
Mechanical Working Parameters
Pre-mixing temperature [°C]
970-1020
Pickling
Sulphuric Acid (%10)
Casting Temperature
Metal - from [°C]
Metal - to [°C]
Ingot Making
970
1020
Continuous Casting
990
1060
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
12
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