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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]	13
Solidus [°C]	833
Liquidus [°C]	875
As cast hardness [HV]	137

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]	30

Color Coordinates
L*	86
a*	2,90
b*	18,5
c*	18,73

Mechanical Caracteristics
Tensile Strength (Rm) [MPa]	461
Yields strength (Rp0.2) [MPa]	280
Elongation Rupture (A) [%]	35
As cast Hardness [HV]	137
Hardness after 70% area red. [HV]	278
Hardness after annealing [HV]	135
Hardness after age-hardening [HV]	180

Mechanical Working Parameters

Pre-mixing temperature [°C]	960-1000
Pickling	Sulphuric Acid (%10)

Casting Temperature	Metal - from [°C]	Metal - to [°C]
Ingot Making	960	1000
Continuous Casting	980	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	275	100	Cooling in furnuce

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