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AlphaSil403

925

General Information
Category	Silver
Caratage	925-950
Color	Silver
Color Shade	Silver
Typology	Alloys For Silver
Production Process	General
Density [cm³]	10,40
Solidus [°C]	855
Liquidus [°C]	910
As cast hardness [HV]	58

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]	150

Color Coordinates
L*	92,4
a*	-0,1
b*	5,5
c*	5,5

Mechanical Caracteristics
Tensile Strength (Rm) [MPa]	252
Yields strength (Rp0.2) [MPa]	133
Elongation Rupture (A) [%]	26
As cast Hardness [HV]	58
Hardness after 70% area red. [HV]	155
Hardness after annealing [HV]	73
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 )	1020 - 1050	660 - 700
Medium ( from 0.5-1.2 mm)	1000 - 1020	620 - 660
Thick (Thick 1.2 mm)	980 - 1000	520 - 620

Trees without stones After casting, cooling time for the flaks is 45 minutes.

Stone-in-place casting trees After casting, cooling time for the flaks is 15 minutes.

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

Mechanical Working Parameters

Pre-mixing temperature [°C]	1030-1080
Pickling	Sulphamic acid (%30)

Casting Temperature	Metal - from [°C]	Metal - to [°C]
Ingot Making	1030	1060
Continuous Casting	1060	1100

Reccomended reductions
Sheet - area or thickness [%]	70
Wire - diameter [%]	50

Mechanical working recommended annealing	Temperature [°C]	Time [min]
> 5 mm	600 - 650	40
1 - 5 mm	600 - 650	30
< 1 mm	600 - 650	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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