Semi-finished products for jewellers and technicians
Our wide range of products features a careful selection of semi-finished products with gold, silver, platinum and palladium alloys, specifically designed for the jewellery industry.
Our sheets are excellent for laser use; they are products that facilitate the design and creation of any type of item to meet customer needs.
With our products, there is no limit to creativity, as any type of product can be made using the precious metals that we have available.
Note our use of platinum alloys whose strength and resistance to deterioration improve the durability of jewellery pieces.
Our customers have a wide range of products to choose from. Whether you want a standard design such as strips, sheets, threads, tubes, bracelets or rings for making wedding rings, or if you prefer much more elaborate designs, in special shapes based on your wishes and instructions. Our goal is continuous improvement and the search for solutions to specific needs and, with this, the satisfaction of our customers.
We can adapt to customer specifications upon request.
Strips and sheets, tubes and bars, anodes, cores and salts and individual targets for the spray industry – SEMPSA JP’s precious metal semi-finished products for the technical industry represent an abundance of technological innovation and detailed analysis of each process.
One of our strong points is that we are able to manufacture both sheets and other products in large sizes as well as in specific measurements.
We have developed specific contact materials, as well as different forms of manufacturing, to obtain semi-finished products made of high-end precious materials to quality standards that are unique worldwide, as endorsed by our UN EN ISO 9001 certification.
Likewise, our rigorous metal procurement procedures mean that we can work with ecosilver and ecogold as proved by our recent accreditation in the RJC Code of Practices standard (Responsible Jewellery Council) through which we can ensure rigorous control of our precious metal recycling and supply processes in line with current regulations regarding the handling and supply of conflict-free metals.
All the needs and demands of our customers are fulfilled with the most sophisticated methods, unifying synergies and creating the necessary processes to overcome all the initial challenges. Our talent and experience are always focused on achieving objectives and obtaining the maximum possible benefits for our customers.
Products
Sheets and strips
Sheets and strips
Wires
Wires
Bars and rods
Bars and rods
Tubes
Tubes
Anodes
Anodes
Thanks to the high standards and quality processes implemented in our company, our products offer standards of excellence that differentiate us from our competitors and ensure an optimal result whatever your need.
Alloys
Alloys for jewellery
We are European leaders in the treatment of precious metals and alloys for jewellery. We are experts in combinations of gold, silver, platinum or palladium, with all carats, shapes and dimensions. We have over 100 years’ experience which, with the premium quality of our work, offers the best guarantee for all our customers.
See the table showing the main gold, silver, platinum and palladium alloys.
Platinum and Palladium
Our wide range of products in unique platinum and palladium alloys guarantees that you will be able to find the right alloy for your creative needs.
Our Pt 955 platinum alloy is a product that we have developed specifically with the exacting demands of the jewellery industry in mind. Its unique properties, coupled with the highly favourable price-performance ratio, distinguishes this alloy from binary alloys previously available on the market. Its particularly fine-grained structure also enhances its processing properties.
All platinum alloy offcuts can be used to optimise customer processes.
Equally surprising: our unique palladium fine-grained alloys are the cheapest alternative to all platinum and white gold alloys.
Advantages of platinum and palladium alloys:
- Super hard fine-grained Pt and Pd alloys
- Very easy to turn and mill
- Suitable for diamond coating
- Highly polished
- Highly suitable for diffusion welding
- Suitable for manufacturing tension rings
Contact us
Email: pedidos@sempsajp.com
Tel: 608 367 672 / 689 426 866 / 669 259 708 / 616 439 158