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Our location in Calne (UK)

Precision Technology​

Calne is the global center of excellence for green and advanced technology thermal management products and standard systems. We are unrivaled in safety, quality, cost, and delivery through the generations of innovative technical solutions to exceed customer expectations.​

Our Calne facility is the leader in precision Molybdenum heat sinks with in-house precious metal plating capabilities to enhance and optimize performance.​

Our team
40 employees

Our experience
> 50 years

Our site
 3.020 m²

Fast Track

A dedicated Sales and Materials prep team providing the customer with 24 hour quoting for stock material and shipment within 3 days from receipt of order. Non-stock requests are quoted using our global supply chain and we offer one of the largest inventories of refractory materials available at competitive prices with excellent customer service.​

Customers who have a requirement for large quantities of material in sheet, rod or bar form on a more regular basis or as semi-finished product can also be supplied via Fast Track as we are supported by the global supply chain of QSIL.​


Aerospace & Defence

Qsil offers highly engineered precision solutions for critical Aerospace & Defence technologies.

Electronics and Thermal Management Components

Qsil provides high performance custom precision engineered solutions for the electronics industry with over 50 years experience.

Industrial & Heat Treatment

Qsil offers wide ranging precision machining, design, modelling and fabrication capability to partner with customers in product development and optimisation.


With a world class dedicated electroplating facility, the current chemistry gives us the capability to plate pieces made from molybdenum, tungsten, and copper but this can be expanded where opportunity exists for other material requirements.​

To enhance molybdenum’s ability to perform, we offer the industries approved plated surfaces:

  • Nickel – Higher temperature brazing attachment. Primer layer for Gold & Silver.​
  • Nickel phosphorus
  • Silver – Low temperature solder attachment.
  • Gold – Ultra Sonic Welding. Brazing attachment Nickel Oxide & Acid Etch protective layer.​
  • Rhodium – Pressure contact Hard Coating friction reducing layer.​
  • Ruthenium – as per Rhodium, customer driven preference.​

Technical specifications:

  • Rhodium​ within 0.1µm specification
  • Ruthenium​ within 0.1µm specification​
  • Nickel​ within 3µm specification across a Jig Size 600mm x 300mm up to 10µm thickness​
  • Electroless Ni​ within 1µm specification across a Jig Size 600mm x 300mm up to 30µm thickness​
  • Gold and Silver​ within 3µm specification across a Jig Size 600mm x 300mm up to 10µm thickness​

Flatness​ 5 microns over 150mm diameter and 2 microns in lapping​
Lapping Capabilities​: Molybdenum to within 2-5µm in flatness, diameter 20-150mm​

Our welding chamber for product line fabrication has the dimensions of L 1200 x H 650 x D500mm. The vacuum chamber is pumped down to a high vacuum and then filled with argon to create an atmosphere of c5ppm of oxygen to stop any oxidization occurring when welding.​


  • Furnace Parts
  • Heat Shields​
  • Hot Zone Replacement Parts
  • Tantalum Hot Zones

Benefits of an oxygen & nitrogen free welding environment​:

  • Prevention of oxidization
  • Reduction of fume formation​
  • Smooth weld seams​
  • Avoidance of post-welding treatment​


  • Tantalum​
  • Molybdenum​
  • Niobium​
  • Others by request​
  • Single sided or double sided PCM of Mo and W parts
  • Capability for highly complex geometries with 5µm precision and ultra-low profile components


QSIL Metals U.K. Ltd
1 Harris Rd
Calne, Wiltshire, SN11 9PT
United Kingdom

Phone: +44 7706 285244

More on the history of the Calne site

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