Alloys & Master Alloys

​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​Alloys & Master Alloys    
The best solution, for every need    
 
   
The wide range of Progold products guarantees the best performance for every type of metal, from gold to silver and bronze, for every type of production process, from investment casting to mechanical working.
Six families, each of them designed to meet the most specific needs.   
 
GENIA®
GREAT MECHANICAL RESISTANCE, 
EXCELLENT CASTABILITY 
FEATURES,
ALMOST INEXISTENT SHRINKAGE DEFECTIVENESS

- High deformations during cold working can be obtained
- Reduced number of the annealing steps
- Particular resistance to corrosion
- Better control of the grain growth during annealing 
- Reduced  "orange peel" phenomenon
- Scraps can be cast several times with very much reduced embrittlement phenomena
Size of the grain is kept under control during casting by continuous casting
- Drastic reduction of shrinkage porosity
- Very reflective smooth surfaces
- H
igh mechanical resistance
_ Reduction of Nickel release in the white gold master alloys;

MECHANICAL WORKING

During mechanical working, VERY COMPACT AND SMOOTH SIDES are guaranteed.
The rolling steps can be harder. ANNEALINGS can be REDUCED. The grain growth during these last stages is CONTROLLED BY GRAIN REFINERS. THE ORANGE PEEL is, therefore, ONLY A MEMORY. CASTINGS DO NOT BREAK.

With GENIA®, COLD WORKINGS HIGHER THAN 90%CAN BE REACHED. GENIA® does not break
and it is compact. GENIA® ensures brightness, because fine grain and compact structure are the main requisites for
this kind of effect. GENIA® allows to produce very thin wires which are not possible with other alloys.

INVESTMENT CASTING

During casting NO "ANNOYING" FILM COVERS THE MOLTEN ALLOY. 

The metal appears always as a mirror, very liquid and NO RESIDUALS REMAIN AFTER CASTING into the crucible. As far as silver is concerned, GENIA® offers alloys with a

comprehensive and definite SOLUTION TO THE FIRESTAIN PROBLEM.

As far as yellow and white carat gold alloys are concerned, the WAY FLASKS ARE QUENCHED DOES NOT INFLUENCE THE BASIC RESISTANCE of GENIA®. EXCELLENT FILLING CAPABILITIES AND EXCELLENT COMPACTNESS make GENIA® a product definitely suitable for investment casting.​

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Best Applications​
Tooltip
Available Colors and Caratages​
 
 
LUX®
THE KING OF DEOXIDATION

- O
ptimal mould filling capability
- Deoxidized casts
- Reduction of gas porosity
- Reasonable shrinkage defects
- Shrinkage defects concentrated inside the casts section
(for some of the very last items of which the range was enriched)

The golden alloys produced using LUX® master alloys are able to get where the others don't, at DEFINITELY INFERIOR TEMPERATURES , with a consequent saving in terms of quality. In fact, lower temperatures mean less interactions between the alloy and the crucible, in case between the alloy and the environment and between the alloy and the investment. The high viscosity allows LUX ®, in fact, to produce a BETTER LAMINAR MOTION during the flask's filling step and consequently to vanish all those problems aroused by a turbulent motion, like a higher abrasion of the investment and its consequent inclusion. LUX®, in presence of highly pure raw materials, is able to grant the TOTAL ABSENCE OF HARD SPOTS , a common inconvenient among alloys for investment casting.

SPECIFIC FOR INVESTMENT CASTING

The main characteristic of gold alloyed with master alloys belonging to LUX® family is DEOXIDATION. 

The castings are, after casting, particularly deoxidized and clean, a fundamental feature, for example, for castings with stones in place. But it is in this inner quality where is hidden the most important effect LUX®
is able to guarantee: the elements responsible for deoxidation produce, on the surface of the molten alloys,
a very stable compound which prevents the products of the reaction with the investment, in contact with the alloy during the flask's filling step, to be embedded into the alloy itself giving birth to the so-called GAS 

POROSITIES.

The  FILLING  capabilities of LUX® are another one of the quality this family has. The compositions are specifically set to have the best of the filling capabilities of the castings themselves.
Best Applications​
Available Colors and Caratages​
 
 
FLEXIA®
FOR YOUR MECHANICAL WORKING

- Fine grain
- Moderate grain growth during annealing
- Aptitude for hardening
- Optimal resistance to corrosion

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​SPECIFIC FOR MECHANICAL WORKING.

FLEXIA® are used in hard plastic deformation workings.
They are often chosen by producers who have VERY STABLE AND SET-UP PRODUCTION PROCESSES.

 

The composition of FLEXIA® IS ENRICHED BY GRAIN REFINERS which help it to be more performing if compared to a traditional alloy.

The FINE GRAIN formula is able to grant the highest plasticity obtainable together with an extreme resistance to corrosion, the quality necessary for the production of hollow jewels. 


The hardest applications such as thePRODUCTION OF ULTRA-LIGHT TUBES and HOLLOW ULTRALIGHT CHAINS are the daily bread of the generation of FLEXIA. Difficult products like obtaining enough yellowish carat gold alloys for the production of 14 ct HOLLOW CHAIN BY IRON CORE (memorable problem for the experts of this production) are a enrichment of the FLEXIA family.​​​ 
Best Applications​
 Available Colors and Caratages​
 
 
UNIBRAX®
MASTER ALLOYS FOR SOLDERING.

- Very low melting range
- It is completely without cadmium
- It does not generate vapours of elements which come to boil more than any other carat gold alloy usually employed for daily production.


UNIBRAX® master alloys are suitable both for the PRODUCTION OF WIRES AND SHEETS.

It is possible to use some ULTRA LOWMELTING UNIBRAX® for the transformation into wires, when the right and precise attention is paid to what Progold's Lab suggests in its TECHNICAL CHARTS, regarding the ROLLING, ANNEALING AND DRAWING cycles.

SPECIFIC FOR SOLDERING
UNIBRAX® range features products with DIFFERENT CASTING TEMPERATURES and, in some cases, with the same colour shade of the base alloys on which the soldering brazing operations are carried on.
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Best Applications​
Available Colors and Caratages​
 
 
PURA®
GUARANTEE OF THE UTMOST PURITY IN A MASTER ALLOY

- High level of chemical pureness of the master alloy itself
- The superficial quality is high and the defects are zeroed
- Selection of the raw materials taken to exaggeration
- Constancy and repeatability of its behaviour

INVESTMENT CASTING AND PLASTIC DEFORMATION.

PURA® was developed to achieve the maximum level of pureness possible thanks to a careful selection
of raw materials.  All of this to safeguard PURA® from any contaminating agent which could impair
 its final features.

PURA® product range is subject to a series of meticulous analysis thanks to instruments which ensure
 that the preset pureness standard is matched in all master alloy drops produced.


SELECTION OF THE RAW MATERIALS TAKE TO EXTREMES

This difference may be noticed in the items produced: HIGH SURFACE QUALITY AND DEFECTIVENESS ALMOST CUT TO ZERO.

It is well known how impurities present in the alloy are the main cause of problems and their concentration generates several types of defects.

With PURA® we managed to ensure this QUALITATIVE STABILITY is always granted: we put all our efforts in carrying out extra inspections on the product. 

 
Best Applications​
Available Colors and Caratages​
 
 
PLATINA®
SPECIFIC FOR PLATINUM ITEMS.

-  High superficial quality
- Low melting range
- High hardness after proper heat treatment
- Suitable for investment casting with and without stones


The innovation in this master alloy makes it possible to keep the jewel shiny longer. Difficulties in removing the natural layer and polish are eliminated once and for all.
​INVESTMENT CASTING

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PLATINA®100 enables deoxidized castings and high surface quality thanks to inferior casting temperature compared to standard platinum. Casting with stones in place was made possible following specific steps to prepare and realize the model and thanks to the possibility to create thin pieces which are non-deformable.

Best Applications​
Available Colors and Caratages​
 
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