TEHROTECH

Precision to the ultimate level.

This is the goal to which our highly competent team aspires, drawing on all the resources of its rich fund of experience and its innovative and advanced specialist knowledge.
With a production area extending over more than 3000 m2 and state of the art equipment, we are one of the leading specialists in plating and are continuously expanding our expertise.
We electroplate products for a customer base that has been established over many years – from the electrical, electromechanical and precision engineering industries, alongside the automotive and medical equipment fields.


We specialise in racked and bulk ­components and can finish

  • turned,
  • milled,
  • stamped and
  • laser cut components

in gold, silver, white bronze, nickel, tin and copper.

Gold cobalt / AuCo

Characteristics:

  • High reflectivity
  • High oxidation resistance
  • Highly ductile coatings
  • Very good conductivity
  • Retains its lustre
  • Good brazeability
  • Low contact resistance
  • Hardness 140-200 HV
  • Coating thickness generally 0.1-3 µm

 

Used as final layer

Decorative uses:

  • Jewellery
  • Spectacles
  • Watch cases

Technical uses:

  • Lifting contacts
  • Plug-in connectors
  • High frequency technology


Silver / Ag

Characteristics:

  • Shiny metallic finish
  • Maximum electrical and thermal conductivity
  • Low contact resistance
  • Coating thickness generally 1-10 µm
  • Hardness 90-110 HV
  • Good brazeability
  • Highly ductile coatings

 

Used as final layer

Decorative uses:   

  • Cutlery
  • Jewellery


Technical uses:    

  • Plug-in/threaded connectors
  • Electronic wires
  • Antenna


Copper / Cu

Characteristics:

  • Shiny metallic/satin finish
  • Highly ductile coatings
  • Good brazeability
  • Coating thickness generally 0.5-2 µm

 

Used as intermediate layer

Decorative uses:

  • Only as intermediate layer


Technical uses:

  • Only as intermediate layer or primer for subsequent coating


White bronze / CuSnZn

Characteristics:

  • High reflectivity
  • Good electrical conductivity
  • Low contact resistance
  • Good oxidation resistance
  • Better characteristics than silver
  • Retains its lustre
  • Coating thickness generally 2-4 µm
  • Hardness 450-500 HV

 

Used as intermediate layer or final coating

Decorative uses:

  • Jewellery
  • Spectacles
  • Ironmongery
  • Clothing industry
  • Writing instruments


Technical uses:

  • Threaded and plug-in connectors
  • High frequency technology
  • Friction bearings
  • Nuts and bolts
  • Oxidation protection for silver


Nickel / Ni

Characteristics:

  • Shiny metallic/satin finish
  • Highly ductile coatings
  • Good oxidation resistance
  • Weldable
  • Hardness 250-350 HV
  • Coating thickness generally 1-5 µm

 

Used as intermediate layer or final coating

Decorative uses:

  • Writing instruments


Technical uses:

  • Lifting contacts
  • High frequency technology
  • Plug-in/threaded connectors


Tin / Sn

Characteristics:

  • Shiny metallic/matt finish
  • Highly ductile coatings
  • Good oxidation resistance
  • Very good brazeability
  • Hardness 20-40 HV
  • Coating thickness generally 3-12 µm

 

Used as final layer

Decorative uses:

  • None


Technical uses:

  • Plug-in/threaded connectors