Hot Tin Dipping
Non-Toxic, Lead-Free & RoHS Compliant
CertificationsISO 9001:2000/
AS9100 Rev B
RoHS Compliant
Hot Tin Dip For Better Corrosion Resistance
What Is Hot Tin Dip?
Hot Tin Dip is the process of immersing a part into a bath of pure molten tin at a temperature greater than 450°F or 232°C. The coating produced consists of a very thin intermetallic layer that first forms at the interface of the base material and the tin (for example, when dipping steel parts, an iron/tin alloy is formed) followed by a layer of pure tin.
Hot Tin Dipping Has Significant Benefits
- Prevents Rusting
For steel, hot tin dipping prevents the base material from rusting. - Prevents Oxidizing
For copper and copper alloys, hot tin dipping prevents the base material from oxidizing. - Solderability
Tin is very solderable making it a desirable finish for electronic components. - Non-Toxic
Tin is non-toxic, making it a desirable finish for electronic components or for food contact items. - Wear & Corrosion Resistant
A tin layer provides greater wear and corrosion resistance than that of most base materials.
Hot Tin Dip Versus Electroplated Coatings
Hot Tin Dip coatings provide specific benefits over electroplated coatings:
- Less porous than electroplating.
- More ductile than electroplating.
- Virtually stress-free.
- More economical than electroplating.
- Better corrosion resistance than electroplating.
- Penetrates and thoroughly coats small holes, provided these are "through" holes and not "blind" holes.
Hot Tin Dip Is Lead-Free
Another major benefit of Hot Tin Dip is that unlike Hot Solder Dip or Tin/Lead electroplating, it is lead-free. As many industries are looking to remove lead from their products because of its health and environmental issues, hot tin dipping is an attractive option.
Hot Tin Dip Is RoHS Compliant
Hot tin dip is compliant with RoHS standards that govern the use of hazardous elements in electronic products.
Hot Tin Dipping Prevents Whisker Growth
Also, hot tin dipping is thought to be one of the more effective mitigating strategies for preventing whisker growth, a problem that plagues critical electronic systems.
Hot Tin Dip Disadvantages
The thickness of a coating provided by Hot Tin Dip is not as well controlled when compared to that provided by electroplating methods. Hot tin dipping should not be used when tight tolerances are required or when the base part has fine details that could be obscured by a thicker plating layer.
Call The Tinning Company Today
The Tinning Company will work with you to ensure that the right type of coating is selected for your application. Put our expertise - and our world-class quality and service - to work for you today.
The terms Hot Tin Dip and Hot Tin Dipping are often misused. Some companies perform Hot Solder Dipping and call it Hot Tin Dipping. Other companies refer to Flow Brightening as Hot Tin or Tin/Lead Dipping.
- Hot Tin Dip: Immersion of an item or items in a molten bath of Tin. Tin melts at 450°F (232°C)
- Hot Solder Dip: Immersion of an item or items in a molten bath of 60/40 Tin/Lead. 60/40 Tin/Lead melts at 370°F (188°C)
- Flow Brightening: Immersion of an item or items that have been electroplated with tin or tin/lead alloy in a bath of grease or oil that is maintained at a higher temperature than the melting point of the deposited coating.
is one of the few companies in the United States capable of performing these operations.
Call us today at 1-617-389-3400 for a speedy quotation on your hot tin dipping project.