Springs are one of the most essential components in a multitude of applications. In particular, zinc plated springs bring a wide array of benefits to the table due to their unique mechanical properties and enhanced corrosion resistance. This article serves as a comprehensive guide for technical engineers looking to refine their understanding of zinc plated springs, thereby allowing them to optimize their design processes and spring selection.

1. Overview of Zinc Plated Springs

Zinc plated springs are springs that have undergone a process called zinc plating. This involves coating the spring with a layer of zinc to protect it from corrosion. It is a widely used technique in industries like automotive, electronics, and construction, owing to the notable properties of zinc and the benefits it imparts to the spring.

2. Advantages of Zinc Plating

Corrosion Resistance

Zinc plating provides a protective layer for the metal substrate, effectively acting as a physical barrier between the spring material and the environment. This is of critical importance in applications where the springs are subjected to humid or corrosive environments, thus increasing the overall lifespan of the spring.

Low Cost

Compared to other coating methods such as powder coating or e-coating, zinc plating is a relatively cost-effective process. This economic advantage makes it particularly suitable for large-scale production where cost savings are significant, without compromising on performance or durability.

Improved Appearance

In addition to enhancing the functionality of springs, zinc plating also improves their aesthetic appeal. The process results in a shiny, lustrous finish that can be further enhanced with chromate conversion coatings of various colors, thereby adding to the aesthetic value of the springs.

3. Design Considerations for Zinc Plated Springs

Designing springs involves considering a variety of factors. In the context of zinc plated springs, these considerations extend beyond the typical parameters such as load capacity, spring constant, and physical dimensions. Here are some design aspects specific to zinc plated springs:

4. Material Selection and Properties

Steel Springs

Steel springs are among the most common types of springs and are particularly suited for zinc plating. High-carbon steel, stainless steel, and alloy steel are some examples.

Zinc Plating

Zinc plating adds several critical properties to the spring material:

5. Application Examples

Here are some examples where zinc plated springs demonstrate their advantages:


Zinc plated springs combine the mechanical strength of springs with the corrosion resistance, low friction, and solderability of zinc plating. This makes them an ideal choice for numerous applications across a wide range of industries. By understanding their properties and benefits, engineers can make informed decisions when designing and selecting springs for their applications.