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​​​​​​​Properties of Silver

 

Silver​​ is an extremely ductile metal with a brilliant white luster that is unmatched when electrical conductivity is the primary requirement . Silver possesses the highest electrical and thermal conductivity of all metals. As such it is an important metal in all sorts of electrical applications. It also offers high temperature lubricity and can provide and edge up to 1200F in applications where anti-seizing and anti-galling are important. At 99.9% purity it offers high solderability in circuit applications. It is also able to be hardened with antimony when durability under sliding contact is required.

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Considerations

 

Silver does tarnish and is sometimes replaced with tin in environments where this characteristic can be a problem. To help with this tendency we offer hardened silver and chromating to affect silver's tendency to do so. Otherwise, we will be able to advise you of the suitability based on your application.​ 

Our Capabilities

 

Te​chnical Plating offers high purity 98% - ​99.9%,  silver plating according to the following standards in high-volume rack and barrel applications:

  • ASTM B700

    • ​Type I:   99.9% purity

    • Type II:  99% purity

    • Type III: 98% purity

    • Grade A: Matte Deposits - without the use of brighteners

    • Grade B: Bright Deposits - with the use of brighteners

    • Grade C: Deposits obtained by mechanical or chemical polishing

    • Grade D: Semibright Deposits- brightness with the use of grain refiners

    • Grade N: Without Supplementary Tarnish Application (Chromates)

    • Grade S: With Supplementary Tarnish Application

  • QQ-S-365

    • ​TYPE I:​​ Matte

    • TYPE II: Semi Bright

    • TYPE III: Bright

    • Grade A: Chromate Post Treatment

    • Grade B: No Post Treatment​

  • In-house developed standards 

  • Some selective masking available

  • Typical thickness .00005"​ - .0002

  • Hard Silver Plating with Antimony from 130 - 200 Knoops for sliding contacts

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Testing Methods

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  • ​X Ray Flourescence (one of the most accurate methods available)

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