White Bronze Brush Plating Solution

£13.24£41.40 + VAT

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Our White Bronze Brush Plating Solution plates an anti microbial layer of white bronze onto a range of different metals.

It can be used instead of nickel because it

  • has a similar hardness
  • has a similar colour
  • can be used to plate a barrier layer between gold on to copper and its alloys

We recommend you use our platinum range of electrodes with our white bronze plating solution.

Please note: This white bronze plating solution solution is air-sensitive so when you’re not using it, keep the lid tightly shut and try to reduce the air space remaining in the bottle. You can do this by adding marbles or glass beads to the bottle or squeezing out the excess air at the top of the bottle. You can also store the solution in a special syringe that’s available on the online shop.

We recommend this solution is stored long-term between 2 – 5 °C

If you don’t follow these precautions then the tin component in the white bronze plating solution will degenerate.

Please click on the blue ‘Examples’ ‘Videos’ and ‘Tech Specs’ tabs on the right to find out more.

Our white bronze brush plating solution is a truly multi-functional product. Because of its anti microbial properties, one of its most important applications is to plate a protective, non-toxic nickel coloured layer onto stainless steel door handles and other touch points, reducing the incidence of microbial transmission. Click on the tab to the right of this to watch a video of a door handle being white bronze plated in-situ.

If you’re planning on creating gold plated copper jewellery or any other decorative or functional item made out of copper that will regularly be worn or handled, white bronze plating is an excellent choice for plating that essential barrier layer between the gold plating and the base layer copper. It is essential because without a barrier layer, the gold plate will eventually diffuse into the copper (including it alloys such as brass) which will result in a patchy, unattractive surface. In the past, nickel plating was used as a barrier layer, but nickel is now banned in the manufacture of jewellery in the UK and EU and so white bronze is the effective, non-toxic and inexpensive alternative.

Please be aware that copper jewellery that will be in constant, close contact with the skin (such as earrings or rings) isn’t suitable for this process. Although white bronze plating is non-toxic, it won’t prevent the underlying copper eventually reacting with the skin, leaving greenish markings. For this reason we suggest that white bronze barrier layers are best on pendants that are designed to be worn over clothes, brooches or belt buckles etc.

Click on the ‘Videos’ tab to the right to watch a demonstration of a piece of copper jewellery being white bronze and then gold plated.

Operating Conditions and Deposit Data

Voltage range 3.2 – 3.5 volts (see notes)
Temperature 18 – 25 °C (optimum: 22 °C)
Electrode Platinum or copper (see notes)
Recommended swab Extra Fluffy Swab
Typical copper/tin ratio in plate (%wt/wt) 42:58 (see notes and  X-ray analysis below
Plating Rate at (3.2 volts, Platinum electrode) Approx. 0.7 micron per minute (spot)
Plating Rate at (3.5 volts, Platinum electrode) Approx. 1.5 micron per minute (spot)
Hardness (micro Vickers 10g load) 450 – 500 Hv
Density of deposit 8.6 – 8.8 g/cm3
Melting point 800 – 850 °C
Stress Medium-high stress (see notes)
Special storage requirements Long-term storage: between 2 – 5 °C (see notes) Air sensitive
(see notes)
Shelf life Up to 2 months at room temperaure, (see notes)
Up to 6 months when stored between 2 – 5 °C
Important: See notes
Health and Safety classification Harmful
Special considerations Avoid excess air space during storage (see notes)
Transport (UN number) None: Not classified as dangerous for transport

 

Notes:

  • Increasing the voltage increases the plating rate. An increase of
    from 3.0 volts to 3.5 volts more than doubles the plating rate.
  • Increasing the voltage causes the copper to tin ratio to increase.
  • If using copper electrodes, use a voltage range of 2.6 – 3.1 volts.
  • Stress can be relieved by heating to 260 °C for 1 hour.
  • Important note: When coming out of
    long term storage, allow solution to reach room temperature before use.
  • As the solution ages, the copper content of the plate increases.
  • Just before plating, we recommend that the work piece be warmed
    by placing it under a tap to approximately 30 °C.
  • Thickness and consistency will vary over the item. Please refer to our
    X-ray analysis illustrating these variations.
  • Please note: This is an air-sensitive solution. When not in use,
    keep the lid tightly shut and take measures to minimise the
    air space remaining in the bottle. These can include adding marbles
    or glass beads to the bottle or squeezing out the excess air at the
    top of the bottle. You can also store the solution in a special syringe
    that’s available on the online shop.
    Failure to observe the above precautions will result in the degeneration
    of the tin component in the solution.
    Please click on the ‘Examples’ tab below for suggestions on how
    to minimise air contamination.

X-ray thickness test on a steel base treated with White Bronze Brush Plating Solution

General guide;

Certain small items, for example Swabs, Nibs and Plating Pens can be sent by normal post within the UK

  • The courier option for UK deliveries is FedEx
  • Free UK mainland delivery available on orders over £200
  • International orders usually 3-5 working days.

For all price quotations for deliveries, please add your items to our shopping cart. You will be able to see the shipping costs by clicking on the ‘Calculate shipping’ button in the cart and before checking out.