Your Guide to Custom Spring Coatings

With our custom spring coating solutions, your products last longer, perform better and stand out. We offer a range of in-house spring coating and spring surface treatments. We also partner with an American-owned and operated industrial coating supplier to provide a wide range of custom coatings for all types of industrial springs. 

Some spring coating solutions prevent corrosion, some improve spring hardness, and some simply add color to reflect branding or product design choices. Whatever you need in a spring coating, we can help!

Selecting the right spring, the perfect spring material, and the optimal spring finish and surface treatment will ensure your springs are optimized and made to last. Tennessee Spring and Metal has a long history of manufacturing and finishing springs and wire forms for industrial applications.  

We offer spring coating solutions for the following applications (and more!):

• Aerospace

• Agricultural

• Appliance

• Automotive

• Doors

• Electrical

• Fasteners

• Furniture

• Hardware

• Lawn and garden

• HVAC

• Ladders

• Office equipment

• Restaurant equipment

• Sporting goods

• Tools

Chemical Coatings

To extend the usable life of an industrial spring and to reduce friction and noise, we can add permanent lubrication or a Teflon™ coating to any spring. Other common chemical treatments for metal springs include phosphoric acid washes to improve oxidation resistance and enamel paints for long-lasting corrosion protection. We also offer environmentally friendly, water-based Thermadep coating for superior protection.

Galvanizing

To protect springs from corrosion, hot-dip galvanizing deposits a thick layer of zinc iron alloy to the surface of a steel spring.

Electroplating

Electrochemistry is a process by which very thin layers of a selected metal are bonded to the surface of another metal at the molecular level. The process itself involves creating an electrolytic cell: a device that uses electricity to deliver molecules to a particular location. Electroplating involves applying a thin layer of metal onto an electrically conductive surface. A cell consists of two electrodes (conductors), usually made of metal, which are held apart from one another. The electrodes are immersed in an electrolyte solution (ThoughtCo).

Electroplating industrial springs improves the appearance of springs and can also improve an item’s value. Electroplating also improves wear and corrosion resistance. 

Electropolishing

Essentially, electropolishing is the opposite of electroplating. Rather than adding material to a spring, electropolishing removes a fine layer of material. Electropolishing, also known as electrochemical polishing, anodic polishing, or electrolytic polishing (especially in the metallography field), is an electrochemical process that removes material from a spring or wire form (Wikipedia). By removing material, we’re able to reduce the surface roughness and improve the finish of springs by leveling micro-peaks and valleys.

Powder coating

Powder coating is a type of protective and decorative coating that is applied as a free-flowing, dry powder. Unlike liquid paint or other solvent-based coatings, which are delivered via an evaporating solvent, powder coating is applied to springs electrostatically and then cured under heat or with an ultraviolet light source. 

Powder coatings typically create a hard, smooth finish that’s even more durable than conventional paint coatings. We offer both thermoplastic and thermoset polymer coatings.

To learn more about our spring coating options or to select the right spring surface treatment for your application, contact Tennessee Spring and Metal online or call us at 1-800-497-3545. Find out just how tough your springs really are: we also offer salt spray testing.