Need lightweight or budget-friendly exterior plating? Tin is the go-to solution across industries. Soft, malleable and non-toxic, this low-maintenance metal adheres to both ferrous and nonferrous substrates to create a non-magnetic, corrosion-resistant finish.
Depending on the performance requirements, tin is electroplated in its pure form or as part of an alloy.
What Is Tin Electroplating?
Tin electroplating, also known as “tinning”, is a cost-effective alternative to precious metals like gold or silver. Due to its wide availability and affordability, tin remains a popular choice for both functional and decorative coatings.
Once applied, a tin finish improves solderability, enhances conductivity and contact resistance, and protects against corrosion and tarnish.
While typically matte and white-gray in appearance, tin can also be polished to achieve a bright, mirror-like finish. Key benefits include:
- Soft, adaptable metal for a wide range of applications.
- Requires only a light application to create a conductive surface.
- Superior solderability – about 50% of all tin usage supports soldering applications.
However, tin has a couple of limitations:
- It doesn’t tolerate high temperatures and offers minimal thermal protection.
- Pure tin may form “whiskers” – tiny, conductive filaments that can damage electrical parts. Using tin alloys helps prevent this issue.
Common Tin Alloys
To improve performance, tin is frequently alloyed with other metals. Each combination ensures certain characteristics:
- Tin-Nickel: Improves durability and reduces friction.
- Tin-Cobalt: A chromium alternative with excellent hardness and wear resistance.
- Tin-Zinc: Offers greater corrosion resistance and a higher melting point.
- Tin-Lead: Improves solderability and reduces whisker formation.
- Lead-Tin-Copper: Lowers friction in high-contact applications.
- Tin-Copper: Delivers a stronger, longer-lasting coating.
- Tin-Silver: Offers a strong combination of heat tolerance, durability and easy soldering.
- Tin-Bismuth: A low-melting-point alloys that also prevents whisker growth.
Applications for Tin Electroplating
Thanks to its versatility, tin plating is used across many industries:
- Food Processing: Tin is safe for food contact and commonly used for cookware, packaging and kitchen equipment.
- Electronics: Tin enhances solderability and conductivity in components like terminals, circuit breakers and interconnects.
- Housing: Adds corrosion resistance to roofing materials and solar panels.
- Fasteners: Screws, bolts and other hardware often receive tin plating to reduce friction and extend lifespan.
Our Tin Plating Services
At American Electro Products, we offer reliable tin electroplating tailored to your product’s size, material and performance goals:
- Substrate Preparation & Underplating: All parts are cleaned thoroughly to remove oil, debris and oxidation. We may apply copper or nickel underplating to improve adhesion and plating quality.
- Plating Methods: We use barrel, rack or vibratory plating, chosen based on part size, geometry and desired thickness.
- Post-Plating Treatments: To further enhance durability, we offer heat treatments to remove hydrogen, improve adhesion and prevent diffusion between layers.
- Industry Standards: Our tin plating services meet MIL-T-10727C, ASTM B545 and other critical military and industrial specifications.
Interested in tin plating for food processing, electronics or another application?
Reach out to American Electro Products to learn more.