Semi-finished products for jewellers and technicians

perfection, harmony and efficiency

Products

Sheets and strips

Sheets and strips

The following table shows the standard manufacturing ranges for sheets and strips:
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Wires

Wires

The following table shows the standard manufacturing ranges for sheets and strips:
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Bars and rods

Bars and rods

The following table shows the standard manufacturing ranges for sheets and strips:
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Tubes

Tubes

The following table shows the standard manufacturing ranges for sheets and strips:
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Anodes

Anodes

The following table shows the standard manufacturing ranges for sheets and strips:
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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

Endless possibilities

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