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AlphaFine734

General Information
Category	Gold
Caratage	8-21K
Color	Red
Color Shade	Red
Typology	Alloys For Gold
Production Process	Universal
Density [cm³]	16,5
Solidus [°C]	920
Liquidus [°C]	930
As cast hardness [HV]	115

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]	50

Color Coordinates
L*	85,5
a*	10,1
b*	19,5
c*	21,96

Mechanical Caracteristics
Tensile Strength (Rm) [MPa]	400
Yields strength (Rp0.2) [MPa]	215
Elongation Rupture (A) [%]	40
As cast Hardness [HV]	115
Hardness after 70% area red. [HV]	220
Hardness after annealing [HV]	125
Hardness after age-hardening [HV]	120

Casting Processing Parameters
Pre-mixing temperature [°C]	1030

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

Trees without stones After casting, cooling time for the flaks is 15 m

Stone-in-place casting trees After casting, cooling time for the flaks is 45 m

Pickling : Sulphuric acid (%10) - 5 min - 50°C

Mechanical Working Parameters

Pre-mixing temperature [°C]	1020-1050
Pickling	Sulphuric Acid (%10)

Casting Temperature	Metal - from [°C]	Metal - to [°C]
Ingot Making	1020	1050
Continuous Casting	1040	1120

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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